Search

William Joshuwa Chen

from Walnut, CA
Age ~53

William Chen Phones & Addresses

  • 229 Amber Ridge Ln, Walnut, CA 91789 (626) 731-3907
  • Fresno, CA
  • San Bernardino, CA
  • Amarillo, TX

Professional Records

Medicine Doctors

William Chen Photo 1

Dr. William Y Chen, Fullerton CA - DDS (Doctor of Dental Surgery)

View page
Specialties:
Endodontics
Address:
Chen & Lythgoe
220 Laguna Rd Suite 3, Fullerton, CA 92835
(714) 738-6651 (Phone), (714) 738-6653 (Fax)
Languages:
English
William Chen Photo 2

Dr. William P Chen, Irvine CA - MD (Doctor of Medicine)

View page
Specialties:
Ophthalmology
Plastic Surgery
Address:
Irvine Spectrum area office
18 Endeavor Suite 305, Irvine, CA 92618
(949) 640-2212 (Phone)

Eye Plastic Surgery Center (Newport Beach)
1401 Avocado Ave Suite 505, Newport Beach, CA 92660
(949) 640-2212 (Phone)

Asian Eyelid Surgery Center
2865 Atlantic Ave Suite 220, Long Beach, CA 90806
(562) 426-0603 (Phone), (562) 426-0049 (Fax)
Procedures:
Blepharoplasty (Eyelid Surgery)
Cosmetic Eyelid Surgery
Cosmetic Facial Surgery
Conditions:
Blepharoplasty (Eyelids)
Cosmetic Eyelid
Eyelid Growths
Ptosis (Droopy Eyelids)
Certifications:
Ophthalmology, 1981
Awards:
Healthgrades Honor Roll
Languages:
English
Chinese
Hospitals:
6650 Alton Pkwy Suite 4131, Irvine, CA 92618

Irvine Spectrum area office
18 Endeavor Suite 305, Irvine, CA 92618

Asian Eyelid Surgery Center
2865 Atlantic Ave Suite 220, Long Beach, CA 90806

Eye Plastic Surgery Center (Newport Beach)
1401 Avocado Ave Suite 505, Newport Beach, CA 92660

Hoag Memorial Hospital Presbyterian
One Hoag Drive, Newport Beach, CA 92663

Long Beach Memorial Medical Center
2801 Atlantic Avenue, Long Beach, CA 90806

Saint Joseph Hospital
1100 West Stewart Drive, Orange, CA 92868
Philosophy:
As an eye plastic surgeon, the safety and care of your eyes are my utmost concern. We aim for a pleasant experience and a natural result for all my patients.
Education:
Medical School
St Louis Univ Sch Of Med
Graduated: 1976
Medical School
Los Angeles Co Genl Hosp
Graduated: 1976
Medical School
University Of California-Los Angeles
Graduated: 1976
Medical School
Emory University
Graduated: 1976
Medical School
University Of California At Berkeley
Graduated: 1972
Medical School
Fellow Of American Academy Of Ophthalmology
Graduated: 1972
Medical School
Fellow, American Society Of Ophthalmic Plastic and Reconstructive Surgery
Graduated: 1972
William Chen Photo 3

Dr. William L Chen, Hesperia CA - DDS (Doctor of Dental Surgery)

View page
Specialties:
Orthodontics
Orthodontics & Dentofacial Orthopedics
Address:
17247 Main St Suite 2, Hesperia, CA 92345
(760) 244-2625 (Phone), (760) 244-2539 (Fax)
Languages:
English
Spanish
William Chen Photo 4

William T. Chen

View page
Specialties:
Otolaryngology
Work:
Bay Medical Center For Cosmetic & Laser Surgery
2801 Waterman Blvd STE 200, Fairfield, CA 94534
(707) 428-3687 (phone), (707) 422-4327 (fax)
Education:
Medical School
University of Illinois, Chicago College of Medicine
Graduated: 1977
Procedures:
Allergen Immunotherapy
Allergy Testing
Hearing Evaluation
Inner Ear Tests
Myringotomy and Tympanotomy
Rhinoplasty
Sinus Surgery
Skull/Facial Bone Fractures and Dislocations
Tonsillectomy or Adenoidectomy
Conditions:
Acute Pharyngitis
Acute Sinusitis
Allergic Rhinitis
Chronic Sinusitis
Deviated Nasal Septum
Languages:
English
Spanish
Description:
Dr. Chen graduated from the University of Illinois, Chicago College of Medicine in 1977. He works in Fairfield, CA and specializes in Otolaryngology. Dr. Chen is affiliated with NorthBay Medical Center.
William Chen Photo 5

William W. Chen

View page
Specialties:
Internal Medicine, Allergy & Immunology
Work:
William W Chen MD
2089 Vale Rd STE 34, San Pablo, CA 94806
(510) 235-9247 (phone), (510) 235-9248 (fax)
Education:
Medical School
Cornell University Weill Medical College
Graduated: 1998
Procedures:
Allergen Immunotherapy
Allergy Testing
Electrocardiogram (EKG or ECG)
Pulmonary Function Tests
Vaccine Administration
Conditions:
Abdominal Aortic Aneurysm
Abdominal Hernia
Abnormal Vaginal Bleeding
Acne
Acute Bronchitis
Languages:
Chinese
English
Tagalog
Description:
Dr. Chen graduated from the Cornell University Weill Medical College in 1998. He works in San Pablo, CA and specializes in Internal Medicine and Allergy & Immunology.
William Chen Photo 6

William Y. Chen

View page
Specialties:
Gastroenterology
Work:
Mercy Medical GroupMercy Medical Group Multi Specialty
6555 Coyle Ave STE 110, Carmichael, CA 95608
(916) 536-3560 (phone), (916) 536-3631 (fax)
Education:
Medical School
Columbia University College of Physicians and Surgeons
Graduated: 1983
Procedures:
Colonoscopy
Endoscopic Retrograde Cholangiopancreatography (ERCP)
Esophageal Dilatation
Upper Gastrointestinal Endoscopy
Sigmoidoscopy
Conditions:
Diverticulitis
Infectious Liver Disease
Abdominal Hernia
Acute Pancreatitis
Anal Fissure
Languages:
English
Spanish
Description:
Dr. Chen graduated from the Columbia University College of Physicians and Surgeons in 1983. He works in Carmichael, CA and specializes in Gastroenterology. Dr. Chen is affiliated with Dignity Health Mercy General Hospital and Mercy San Juan Medical Center.
William Chen Photo 7

William T. Chen

View page
Specialties:
Gastroenterology
Work:
University Gastroenterology
33 Staniford St FL 2, Providence, RI 02905
(401) 421-8800 (phone), (401) 421-2492 (fax)

Rhode Island Hospital Endocrinology
593 Eddy St, Providence, RI 02903
(401) 444-4000 (phone), (404) 447-8770 (fax)
Education:
Medical School
Thomas Jefferson University, Jefferson Medical College
Graduated: 1997
Procedures:
Endoscopic Retrograde Cholangiopancreatography (ERCP)
Esophageal Dilatation
Sigmoidoscopy
Colonoscopy
Upper Gastrointestinal Endoscopy
Conditions:
Constipation
Gastrointestinal Hemorrhage
Abdominal Aortic Aneurysm
Acute Pancreatitis
Benign Polyps of the Colon
Languages:
English
Description:
Dr. Chen graduated from the Thomas Jefferson University, Jefferson Medical College in 1997. He works in Providence, RI and 1 other location and specializes in Gastroenterology. Dr. Chen is affiliated with Kent Memorial Hospital, Newport Hospital, Rhode Island Hospital and Roger Williams Medical Center.
William Chen Photo 8

William C. Chen

View page
Specialties:
Family Medicine
Work:
Sim Family Clinic
4331 Brightwood Dr STE 100, Houston, TX 77068
(281) 893-5870 (phone), (281) 893-5895 (fax)
Education:
Medical School
Baylor College of Medicine
Graduated: 1994
Procedures:
Electrocardiogram (EKG or ECG)
Pulmonary Function Tests
Vaccine Administration
Conditions:
Abnormal Vaginal Bleeding
Acute Bronchitis
Acute Pharyngitis
Acute Sinusitis
Allergic Rhinitis
Languages:
Chinese
English
Spanish
Description:
Dr. Chen graduated from the Baylor College of Medicine in 1994. He works in Houston, TX and specializes in Family Medicine. Dr. Chen is affiliated with Houston Northwest Medical Center.

Lawyers & Attorneys

William Chen Photo 9

William Chen - Lawyer

View page
Office:
Saint Island International Patent & Law Offices
Specialties:
I.P. Litigation
Licensing
Unfair Competition
Transnational Legal Problems
ISLN:
908422034
Admitted:
1978
University:
Soochow University Graduate School of Law
Law School:
Soochow University Law School, LL.B., 1976
William Chen Photo 10

William Chen - Lawyer

Resumes

Resumes

William Chen Photo 11

William Chen Santa Barbara, CA

View page
Work:
Enterprise Systems Consulting

2013 to 2000
Independent Consultant

RightScale, Inc

Jan 2010 to Sep 2012
IT MANAGER

MediaTrust

Jan 2007 to Aug 2009
CHIEF INFORMATION OFFICER

Lynda.com

May 2002 to Apr 2006
DIRECTOR OF IT/SENIOR DEVELOPER

Openwave

Nov 2000 to Feb 2001
ENTERPRISE ARCHITECT

Software.com

Mar 1997 to Nov 2000
DIRECTOR OF INFORMATION TECHNOLOGY

Vertical Market Web Services

Aug 1996 to Mar 1997
Independent consultant

Global Shopping Network

Oct 1994 to Aug 1996
FOUNDER/PRESIDENT

Jet Propulsion Laboratory

Aug 1988 to Oct 1994
SENIOR SYSTEMS CONSULTANT

First Interstate Mortgage Company

May 1987 to Aug 1988
INTERNAL CONSULTING INTERN - Strategic Planning and Control

Education:
UNIVERSITY OF CALIFORNIA
Los Angeles, CA
1989
B.A. in Psychology

William Chen Photo 12

William Chen New York, NY

View page
Work:
1871 House Hotel

Jul 2013 to 2000
General Manager/Administrative Assistant

Prakarsa Recycling

Sep 2012 to 2000
Marketing/Sales Intern

University of California, Los Angeles
Los Angeles, CA
Sep 2009 to Jul 2011
Assistant Researcher

Education:
New York University
New York, NY
2012 to 2013
Masters in Biology (With business related courses)

University of California
Los Angeles, CA
Aug 2008 to Dec 2010
Bachelor of Science in Biology

Skills:
Windows and Macintosh familiarity, proficiency in Microsoft Office, Adobe Photoshop, and very quick to learn a new skill set.
William Chen Photo 13

William Chen Fontana, CA

View page
Work:
Legal Aid Society of Orange County

2013 to 2000
Administrative Assistant of the Business Manager

CE-CERT
Riverside, CA
2011 to 2013
Mobile Emissions Lab Researcher

UCR

2012 to 2012
Antibacterial Peptide Researcher

UCR

2011 to 2012
Syngas Project Researcher

UCR

2011 to 2011
Salton Sea Project Researcher

Education:
University of California
Riverside, CA
2012
B.S. in Chemical Engineering

Skills:
Fluent in Mandarin, MS Word, PowerPoint and Excel, ProII, SuperPro, MatLab, Basic HTML and Javascript, Process control, Technical Support, Data Collection
William Chen Photo 14

William Chen Sunnyvale, CA

View page
Work:
Brocade Networks

Mar 2013 to 2000
Senior ASIC Engineer

120+ unit Sunnyvale townhouse community Home Owner Association

Jul 2011 to 2000
Volunteer Leadership

Cisco Systems, Inc., Data Center Technology Group
San Jose, CA
Jul 2010 to Mar 2013
Hardware Design Engineer III/IP Design Lead

Cisco Systems

Apr 2008 to Jun 2010
Hardware Design Engineer II

Cisco Systems

Mar 2007 to Mar 2008
Hardware Design Engineer I

Intel Corp., Mobile Platform Group
Santa Clara, CA
Jun 2006 to Aug 2006
Technical Account Manager Intern

Education:
UNIVERSITY OF CALIFORNIA, BERKELEY
Berkeley, CA
Dec 2006
B.S. in Electrical Engineering and Computer Science

UCLA ANDERSON SCHOOL OF MANAGEMENT
Los Angeles, CA
M.B.A. in Fully Employed Program

William Chen Photo 15

William Chen Irvine, CA

View page
Work:
Toll Global Forwarding

Sep 2012 to Present
Accounts Payable / Agent Settlements / Intercompany Accountant

ATI Chen-Tech Forging
Irvine, CA
Apr 2010 to Sep 2011
Staff Accountant

Teraoka & Company CPAs

Feb 2010 to Apr 2010
Tax Intern

Education:
University of California
Irvine, CA
May 2004 to Mar 2008
B.A. in Business Economics

Skills:
Accounts Payable, Accounts Receivable, QuickBooks Pro, Lacerte, Peachtree, Microsoft Excel, Payroll
William Chen Photo 16

William Chen Matthews, NC

View page
Work:
Burke Williams Day Spa
Santa Monica, CA
2011 to 2012
Massage Therapist

Back to Total Health Chiropractic office
West Hollywood, CA
2011 to 2012
Massage Therapist

Private House Calls
Los Angeles, CA
2010 to 2012
Massage Therapist

Personal AssistantMonterey Park, CA
2008 to 2011

Synergy Fitness
Jersey City, NJ
2007 to 2008
Health and Fitness Sales Rep

William Chen Photo 17

William Chen San Jose, CA

View page
Work:
Center for Chinese Studies, UCLA
Los Angeles, CA
Oct 2011 to Jun 2012
Program Assistant

Kaiser Permanente IT
Oakland, CA
Jun 2011 to Sep 2011
Voice Infrastructure Intern

Department of Material Science & Engineering, UCLA
Los Angeles, CA
Jan 2010 to Jun 2011
Admission Assistant

National Institute of Educational Resources and Research

Jun 2009 to Aug 2009
Intern

Fujidigital USA Corp
Sunnyvale, CA
Jun 2006 to Aug 2006
Marketing Assistant

Education:
University of California
Los Angeles, CA
Jun 2012
B.S. in Electrical Engineering

Skills:
Matlab, C++, C, PSPICE/Orcad, HTML, VHDL, R, Labview, MS Suites (Word, Excel, PowerPoint, Project, Visio, SharePoint, Visual Basic)

Business Records

Name / Title
Company / Classification
Phones & Addresses
William Chen
Quality Dry Cleaners
Lualily Dry Cleaners
Dry Cleaners
2B 10155 152 St, Surrey, BC V3R 4G6
(604) 585-3853
Mr. William Chen
President
P.L.A.Y. Pet Lifestyle and You, Inc
Pet Supplies & Foods - Retail
246 2nd Street, Unit A, San Francisco, CA 94105
(855) 322-7529
William Chen
Store Manager
Microtech Technologies Co
Computer-Dealers. Computer Networking. Computer Software & Services
1923 E Broadway, Vancouver, BC V5N 1W4
(604) 266-9890, (604) 266-9851
William X. Chen
President
Cosmological & Earth Science Research, Inc., A California Nonprofit Public Benefit Corporation
790 E Colorado Blvd, Pasadena, CA 91101
1051 Park Vw Dr, Covina, CA 91724
225 W Vly Blvd, San Gabriel, CA 91776
William X. Chen
President
Ecom Asset Securitization, Inc
Mortgage Banker/Correspondent · Mortgage Bankers and Correspondents, Nsk
1051 Park Vw Dr, Covina, CA 91724
William X. Chen
President
America Energy Capital Inc
801 E Vly Blvd, San Gabriel, CA 91776
William Chen
President
Goldenwest - Naomi Homeowners Association, Inc
Civic/Social Association
816 W Naomi Ave, Arcadia, CA 91007
William Chen
President
NORTH ORANGE COUNTY CHINESE CULTURE ASSOCIATION
PO Box 17065, Anaheim, CA 92817

Publications

Wikipedia References

William Chen Photo 18

William Y.c. Chen

Isbn (Books And Publications)

Seismic Modal Analysis and System Interaction: Presented at the 1993 Pressure Vessels and Piping Conference, Denver, Colorado, July 25-29, 1993

View page
Author

William W. Chen

ISBN #

0791809765

Asian Blepharoplasty and the Eyelid Crease

View page
Author

William P. Chen

ISBN #

0750675748

Advances in Electronic Packaging 1992: Proceedings of the 1992 Joint Asme/Jsme Conference on Electronic Packaging

View page
Author

William T. Chen

ISBN #

0791807665

Advances in Electronic Packaging, 1993: Proceedings of the 1993 ASME International Electronics Packaging Conference Presented at the ASME International Electronics Packaging Conference, Binghamton, N

View page
Author

William T. Chen

ISBN #

0791806863

Manufacturing Process and Materials Challenges in Microelectronic Packaging: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Atlanta, Georgia, December 1-6, 199

View page
Author

William T. Chen

ISBN #

0791808963

Manufacturing Aspects in Electronic Packaging 1993: Presented at the 1993 ASME Winter Annual Meeting, New Orleans, Louisiana, November 28-December 3, 1993

View page
Author

William T. Chen

ISBN #

0791810321

Application of Fracture Mechanics in Electronic Packaging and Materials: Presented at the 1995 Asme International Mechanical Engineering Congress and Exposition November 12-17, 1995 Dan Francisco, Cal

View page
Author

William T. Chen

ISBN #

0791817369

Application of Fracture Mechanics in Electronic Packaging: Presented at the 1997 Asme International Mechanical Engineering Congress and Exposition, November 16-21, 1997, Dallas, Texas

View page
Author

William T. Chen

ISBN #

0791818276

Amazon

A Panorama Of Discrepancy Theory (Lecture Notes In Mathematics)

A Panorama of Discrepancy Theory (Lecture Notes in Mathematics)

View page

This is the first work on Discrepancy Theory to show the present variety of points of view and applications covering the areas Classical and Geometric Discrepancy Theory, Combinatorial Discrepancy Theory and Applications and Constructions. It consists of several chapters, written by experts in their...

Binding

Paperback

Pages

695

Publisher

Springer

ISBN #

3319046950

EAN Code

9783319046952

ISBN #

14

Color Atlas Of Cosmetic Oculofacial Surgery With Dvd, 2E

Color Atlas of Cosmetic Oculofacial Surgery with DVD, 2e

View page

Color Atlas of Cosmetic Oculofacial Surgery, 2nd Edition by Drs. Chen and Kahn is an invaluable tool for all oculoplastic surgeons, plastic surgeons, ophthalmologists, dermatologists, facial plastic surgeons, and head and neck specialists. Fully updated and revised, the new edition of this pictorial...

Author

William P. Chen MD, Jemshed A. Khan MD

Binding

Hardcover

Pages

376

Publisher

Saunders

ISBN #

1416062106

EAN Code

9781416062103

ISBN #

11

The Data Science Handbook: Advice And Insights From 25 Amazing Data Scientists

The Data Science Handbook: Advice and Insights from 25 Amazing Data Scientists

View page

The Data Science Handbook contains interviews with 25 of the world s best data scientists. We sat down with them, had in-depth conversations about their careers, personal stories, perspectives on data science and life advice. In The Data Science Handbook, you will find war stories from DJ Patil, US ...

Author

Carl Shan, William Chen, Henry Wang, Max Song

Binding

Paperback

Pages

346

Publisher

Data Science Bookshelf, The

ISBN #

0692434879

EAN Code

9780692434871

ISBN #

4

Gamsat In 2 Months: Passing The Gamsat Faster, Smarter, And Snarkier

GAMSAT In 2 Months: Passing the GAMSAT Faster, Smarter, and Snarkier

View page

Are you desperate to pass the GAMSAT, but feel out of your depth?Learn from someone who passed the GAMSAT on the first go, with less than 2 months to prepare...In GAMSAT in 2 Months: The FastGAMSAT Study Guide, learn about:- What happened on 20th January, 2009, and how it gave me a mindset of succes...

Author

William Chen

Binding

Kindle Edition

ISBN #

8

How To Speak So That People Want To Listen: Avoiding The 7 Deadly Speaking Habits And Learn To Speak With Confidence (Speaking Well Book 1)

How to Speak so that People Want to Listen: Avoiding the 7 Deadly speaking habits and learn to speak with confidence (Speaking Well Book 1)

View page

You've only got a minute - How come you aren't capturing your listener's attention?Whether you're preparing for a TED speech, talking to clients or chatting with your best friend. Do you notice the lack of attention you're receiving? You might be making a deadly speaking habit that you're not aware ...

Author

William Chen

Binding

Kindle Edition

Pages

21

ISBN #

2

The Machines #1

The Machines #1

View page

Adapted from the upcoming combat strategy game.200 years after the fall of mankind, a malfunctioning war machine and a slave girl with the unique power to heal robotic minds must overcome their mutual distrust in order to rescue a friend from the robots intent on harvesting his life force.

Author

John McLean-Foreman

Binding

Kindle Edition

Pages

17

Publisher

Dark Horse

ISBN #

12

Body Mechanics Of Tai Chi Chuan

Body Mechanics of Tai Chi Chuan

View page

Book by Chen, William C. C, Chen

Author

William C. C Chen, Chen

Binding

Paperback

Pages

128

Publisher

William C.C. Chen

ISBN #

0964408406

EAN Code

9780964408401

ISBN #

1

Asian Blepharoplasty And The Eyelid Crease, 3E

Asian Blepharoplasty and the Eyelid Crease, 3e

View page

Ideal for oculoplastic, facial plastic and cosmetic dermatologic surgeons, Dr. Chen's Asian Blepharoplasty and the Eyelid Crease was designed to help you master the latest techniques used in this highly popular surgery. Comprehensively updated, this multimedia resource features the addition of eight...

Author

William P. Chen MD

Binding

Hardcover

Pages

400

Publisher

Elsevier

ISBN #

0323355722

EAN Code

9780323355728

ISBN #

3

Us Patents

Using A Conflict Of Interest Method And System With Regression Analysis For Analyzing Portfolio Manager Performance

View page
US Patent:
20100010881, Jan 14, 2010
Filed:
Jul 13, 2008
Appl. No.:
12/172239
Inventors:
William Chen - Rowland Heights CA, US
International Classification:
G06Q 10/00
G06Q 40/00
US Classification:
705 11
Abstract:
To analyze the factors that contribute to the performance of the portfolio manager has always been a challenging task. Traditionally, the background of the manager, statistical data associated with the manager, and many tangible and intangible considerations play a role in the evaluation of the manager. A portfolio manager can not operate without the supporting teams; the manager is also influenced by the operational environment and a changing market structure. For this invention, the conflict of interest method is utilized to characterize the operational environment and the market structure that have been missing from traditional evaluation method of the manager. The objective of this invention is to introduce a balanced method for evaluating the portfolio manager by analyzing the investment process and its components that the manager has to work with it. By building the COIS into regression analysis, the contributing factors of performance are extended from factors associate with the manager to include factors related to the market participants, investment process, business practice, operational environment and market structure. The COI Method opens new paths to perform analysis and decision making in many fields of investment.

Using Conflict Of Interest [Coi] Method And System In Creating Investment Portfolio

View page
US Patent:
20100070347, Mar 18, 2010
Filed:
Jul 13, 2008
Appl. No.:
12/172240
Inventors:
William Chen - Rowland Heights CA, US
International Classification:
G06Q 40/00
G06Q 90/00
G06Q 10/00
G06F 17/30
US Classification:
705 11, 705500, 705 36 R, 707802, 707769, 707705, 707E17044, 707E17014
Abstract:
In the past, the practice of creating investment portfolio has been focused on the diversification of investment without specifically identifying investment risks. This invention is related to a method of diversification which considers the level of potential for conflict of interest (COI) risk as part of a diversification process. The COI has its origin in the interaction among market participants, market structure, business arrangement and practice. The advantage of the present invention is that the COI becomes a primary factor in creating the portfolio. This method provides a direct analysis of the COI risk that associates with entire investment process and the manager, and it is further integrated into the portfolio creation process. The COI Method opens new paths to perform risk analysis and could be integrated into decision process in other fields of investment.

Social Distribution Of Emergency Status

View page
US Patent:
20130218959, Aug 22, 2013
Filed:
Feb 17, 2012
Appl. No.:
13/400012
Inventors:
Brian Paihan Sa - Irvine CA, US
William Chen - Palo Alto CA, US
Taro Kodama - Tokyo, JP
International Classification:
G06F 15/16
US Classification:
709204
Abstract:
A social networking system distributes information related to emergency events. The social networking system provides an interface for users to view information about the users' connections related to the emergency event. The interface allows users to filter the users' connections to search for connections affected by the emergency event. The interface also includes a status indicator for the users and provides a method for providing input to the connections' status.

Bonded Sapphire, And Method Of Making Same

View page
US Patent:
59423439, Aug 24, 1999
Filed:
Oct 16, 1997
Appl. No.:
8/951999
Inventors:
William W. Chen - Los Angeles CA
Assignee:
Raytheon Company - Lexington MA
International Classification:
B32B 1700
US Classification:
428700
Abstract:
A large, monolithic sapphire structure for use in mid-IR military applications, such as, for example, a window or screen for radar detection equipment. The structure is made by bonding together two or more smaller sapphire panes by a method including the steps of coating a surface of each of the panes with a magnesia vapor and contacting the magnesia-coated surfaces with each other in the presence of a hydrogen-containing gas at a temperature (e. g. , about 1500. degree. C. and 2000. degree. C. ) and for a time period (e. g. , about 45 minutes to about ten hours) sufficient to form a continuous magnesia-alumina spinel interlayer bond between the panes.

Methods Of Fabricating Continuous Transverse Stub Radiating Structures And Antennas

View page
US Patent:
57715670, Jun 30, 1998
Filed:
Aug 29, 1996
Appl. No.:
8/705508
Inventors:
Brian M. Pierce - Moreno Valley CA
Norman H. Harris - Newhall CA
Thomas Kirk Dougherty - Playa del Rey CA
William W. Chen - Westchester CA
Florentino V. Lee - Culver City CA
Assignee:
Raytheon Company - Lexington MA
International Classification:
H01P 1100
US Classification:
29600
Abstract:
Methods of fabricating a porous ceramic composite having voltage-variable dielectric properties. The composite is made as follows. A polycrystalline ferroelectric powder, which is a ferroelectric perovskite such as barium strontium titanate, for example, is provided. The powder, a binder and a filler are then mixed in water to form a slurry. The powder-binder-filler slurry is then dried. The dried powder-binder-filler slurry is granulated. The granulated powder-binder-filler is pressed into a die. The binder and filler are then burned out to form a fragile porous ash-like structure. The porous structure is then sintered to form porous ceramic parts. The porous ceramic parts are then machined tiles. The machined porous tiles may then be tested for microwave properties. Fabrication methods for producing porous ferroelectric ceramic-polymer composite tiles or subaperture blanks and continuous transverse stub electronically scanned antenna plates or subapertures are also disclosed.

Method Of Making Thermal Shock Resistant Sapphire For Ir Windows And Domes

View page
US Patent:
57026548, Dec 30, 1997
Filed:
Aug 30, 1996
Appl. No.:
8/706090
Inventors:
William W. Chen - Westchester CA
Norman H. Harris - Newhall CA
Assignee:
Hughes Electronics
International Classification:
C04B 4000
US Classification:
264 82
Abstract:
Single crystal sapphire is conventionally employed for mid-wave IR windows and domes exposed to high aerodynamic heating environments. Single crystal sapphire, however, suffers a loss of compressive strength in the c-axis of 95% on heating from ambient to 800. degree. C. This loss of compressive strength on heating results in poor thermal shock resistance. Poor thermal shock resistance jeopardizes the reliability of the windows and domes. The process of the present invention strengthens sapphire and improves its resistance to thermal shock by introducing magnesium (Mg) ions into the crystal lattice of sapphire to form a solid solution. The solid solution increases the strength of the sapphire. Additionally, a larger increase in strength results from converting the Mg into second phase precipitates comprising magnesium aluminate spinel. The formation of the second phase particulates results in precipitation-hardening or precipitation-strengthening due to the volume change on forming the magnesium aluminate spinel.

Method Of Treating A Zinc Sulfide Body Formed By Chemical Vapor Deposition To Increase Its Rain Erosion Durability

View page
US Patent:
60457287, Apr 4, 2000
Filed:
Oct 9, 1998
Appl. No.:
9/169311
Inventors:
William W. Chen - Los Angeles CA
Norman H. Harris - Newhall CA
Stephen A. Gabelich - San Pedro CA
Assignee:
Raytheon Company - Lexington MA
International Classification:
B29D 1100
US Classification:
264 121
Abstract:
An erosion-resistant, chemically vapor-deposited zinc sulfide window and method of making the same are disclosed. The method includes the step of immersing a chemically vapor-deposited or a hot isostatic pressed, chemically vapor-deposited zinc sulfide body into a liquid comprising gallium, the liquid having a temperature of about 600. degree. C. to about 1000. degree. C. , for at least about thirty minutes to form a gallium-doped body. The gallium-doped, chemically vapor-deposited zinc sulfide body according to the invention is one capable of transmitting light having a wavelength in the range of about 300 nanometers to about 15,000 nanometers. Furthermore, the gallium-doped, chemically vapor-deposited zinc sulfide window according to the invention is capable of transmitting light, having a wavelength in the range of about 380 nanometers to about 700 nanometers have been exposed to rain erosion for 20 minutes at 470 miles per hour with a 90. degree. incidence angle, with at least about 150% more efficiency than a non-doped, chemically vapor-deposited zinc sulfide window.
William Joshuwa Chen from Walnut, CA, age ~53 Get Report