Professional Records
License Records
John David Darab
Address:
Lansdale, PA 19446
License #:
PE045096E - Expired
Category:
Engineers
Type:
Professional Engineer
John Darab Phones & Addresses
-
613 Spruce St, Lansdale, PA 19446 (215) 855-4555
-
Montgomery, PA
Work
Company:
Pacific northwest national laboratory May 1992 to Oct 2001
Position:
Researcher
Education
School / High School:
Rensselaer Polytechnic Institute 1982 to 1992
Skills
Glass • Glassblowing • Fused Glass • Brewing • Papermaking • Chemistry • Materials • Ceramic • Raw Materials • Craft • Abstraction • Art Education • Sculpture • Art • Teaching
Industries
Financial Services
Resumes
Resumes
Consulting Engineer
View pageLocation:
Lansdale, PA
Industry:
Financial Services
Work:
Pacific Northwest National Laboratory May 1992 - Oct 2001
Researcher
Atomic Ale Brewpub and Eatery Oct 1998 - Oct 2001
Brewer and Brewhouse Manager
The Washington Group Oct 1998 - Oct 2001
Consulting Engineer
Researcher
Atomic Ale Brewpub and Eatery Oct 1998 - Oct 2001
Brewer and Brewhouse Manager
The Washington Group Oct 1998 - Oct 2001
Consulting Engineer
Education:
Rensselaer Polytechnic Institute 1982 - 1992
Bucks County Community College
The University of the Arts
Bucks County Community College
The University of the Arts
Skills:
Glass
Glassblowing
Fused Glass
Brewing
Papermaking
Chemistry
Materials
Ceramic
Raw Materials
Craft
Abstraction
Art Education
Sculpture
Art
Teaching
Glassblowing
Fused Glass
Brewing
Papermaking
Chemistry
Materials
Ceramic
Raw Materials
Craft
Abstraction
Art Education
Sculpture
Art
Teaching
Publications
Us Patents
Composite Oxides Or Hydroxides Comprising Alumina And Zirconia For Automotive Catalyst Applications And Method Of Manufacturing
View pageUS Patent:
7939041, May 10, 2011
Filed:
Dec 30, 2005
Appl. No.:
11/813049
Inventors:
John G. Darab - Flemington NJ, US
Assignee:
Magnesium Elektron Limited - Salford
International Classification:
C01F 17/00
C01F 7/02
C01G 25/02
C01F 7/02
C01G 25/02
US Classification:
423263, 4235931, 42359412, 423600, 423608, 502300, 502302, 502304, 502308, 502355
Abstract:
An improved method for the formation of composite hydroxides or oxides comprising, on an oxide basis, AlOand ZrO, and optionally CeO, LaO, NdO, PrO, SmO, YO, and other rare earth oxides, comprising the steps of preparing an aqueous metal salt solution and forming a hydroxide precipitate slurry by combining the aqueous metal salt solution with an aqueous solution of a caustic alkali at a pH greater than 8. 5 to precipitate out all the metal species. The variation in pH during the precipitation reaction is 1. The invention also relates to composites formed by this method comprising 20-70 wt % AlO, 10-77 wt % ZrO, 0-34 wt % CeOand 0-22 wt % REOs other than CeO, and to composites per se comprising, on an oxide basis, 42-70 wt % AlO, 10-48 wt % ZrO, 2-34 wt % CeOand 0-9 wt % REOs other than CeOand having the following properties after heating to 850 C. over four hours and holding at 850 C. for four hours then allowing to cool to ambient temperature: —a surface area after aging at 950 C.
Composite Oxides Or Hydroxides Comprising Alumina And Zirconia For Automotive Catalyst Applications And Method Of Manufacturing
View pageUS Patent:
20110183840, Jul 28, 2011
Filed:
Apr 6, 2011
Appl. No.:
13/080977
Inventors:
John G. DARAB - Flemington NJ, US
Assignee:
MAGNESIUM ELEKTRON LIMITED - Salford Quays
International Classification:
B01J 21/06
B01J 37/03
B01J 37/06
B01J 37/08
B01J 27/055
B01J 27/053
B01J 27/135
B01J 37/03
B01J 37/06
B01J 37/08
B01J 27/055
B01J 27/053
B01J 27/135
US Classification:
502218, 502349, 502217, 502227, 502304, 502303, 502302
Abstract:
An improved method for the formation of composite hydroxides or oxides comprising, on an oxide basis, AlOand ZrO, and optionally CeO, LaO, NdO, PrO, SmO, YO, and other rare earth oxides, comprising the steps of preparing an aqueous metal salt solution and forming a hydroxide precipitate slurry by combining the aqueous metal salt solution with an aqueous solution of a caustic alkali at a pH greater than 8.5 to precipitate out all the metal species. The variation in pH during the precipitation reaction is 1. The invention also relates to composites formed by this method comprising 20-70 wt % AlO, 10-77 wt % ZrO, 0-34 wt % CeOand 0-22 wt % REOs other than CeO, and to composites per se comprising, on an oxide basis, 42-70 wt % AlO, 10-48 wt % ZrO, 2-34 wt % CeOand 0-9 wt % REOs other than CeOand having the following properties after heating to 850 C. over four hours and holding at 850 C. for four hours then allowing to cool to ambient temperature:—a surface area after aging at 950 C. for 2 hours equal to or greater than 60 m/g, and—a surface area after aging at 1100 C. for 2 hours equal to or greater than 30 m/g.
Zirconia-Based Compositions For Use In Passive Nox Adsorber Devices
View pageUS Patent:
20200101436, Apr 2, 2020
Filed:
Dec 3, 2019
Appl. No.:
16/702344
Inventors:
- Manchester, GB
- Lexington KY, US
John G. DARAB - Flemington NJ, US
Mark CROCKER - Georgetown KY, US
Yaying JI - Lexington KY, US
- Lexington KY, US
John G. DARAB - Flemington NJ, US
Mark CROCKER - Georgetown KY, US
Yaying JI - Lexington KY, US
International Classification:
B01J 20/06
B01J 20/02
B01J 20/32
B01D 53/94
B01D 53/04
B01J 20/02
B01J 20/32
B01D 53/94
B01D 53/04
Abstract:
A passive NOadsorbent includes: palladium, platinum or a mixture thereof and a mixed or composite oxide including the following elements in percentage by weight, expressed in terms of oxide: 10-90% by weight zirconium and 0.1-50% by weight of least one of the following: a transition metal or a lanthanide series element other than Ce. Although the passive NOadsorbent can include Ce in an amount ranging from 0.1 to 20% by weight expressed in terms of oxide, advantages are obtained particularly in the case of low-Ce or a substantially Ce-free passive NOx adsorbent.
Zirconia-Based Compositions For Use In Passive Nox Adsorber Devices
View pageUS Patent:
20190308164, Oct 10, 2019
Filed:
Apr 5, 2018
Appl. No.:
15/945770
Inventors:
- Manchester, GB
- Lexington KY, US
John G. DARAB - Flemington NJ, US
Mark CROCKER - Georgetown KY, US
Yaying JI - Lexington KY, US
- Lexington KY, US
John G. DARAB - Flemington NJ, US
Mark CROCKER - Georgetown KY, US
Yaying JI - Lexington KY, US
International Classification:
B01J 20/06
B01J 20/02
B01J 20/32
B01D 53/04
B01D 53/94
B01J 20/02
B01J 20/32
B01D 53/04
B01D 53/94
Abstract:
A passive NOadsorbent includes: palladium, platinum or a mixture thereof and a mixed or composite oxide including the following elements in percentage by weight, expressed in terms of oxide: 10-90% by weight zirconium and 0.1-50% by weight of least one of the following: a transition metal or a lanthanide series element other than Ce. Although the passive NOadsorbent can include Ce in an amount ranging from 0.1 to 20% by weight expressed in terms of oxide, advantages are obtained particularly in the case of low-Ce or a substantially Ce-free passive NOx adsorbent.