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Leonid A Turkevich

from Cincinnati, OH
Age ~74
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Also known as:
Leonid Margaret Turkevich, Leonid H
Phone and address:
3650 Carpenters Creek Dr, Cincinnati, OH 45241
(513) 554-0718
Related to:
Julia C Turkevich, 32Stephanie FiguraMichael A Szadorski, 52Judy FiguraJudith Dunscomb, 83Judith Figura
Connected to:
Leon R Turkevich, 62Gerald D Turkewitz, 91Morgan L Turkewitz, 36Brian D Turkfeld, 48Fahad A Turki, 62Majed Turki, 44Mohammad F Turki, 66Saif Turki, 30Samir F Turki, 41Sarah Turki, 37

Leonid Turkevich Phones & Addresses

  • 3650 Carpenters Creek Dr, Cincinnati, OH 45241 (513) 554-0718
  • Arlington, VA
  • 10760 Centennial Dr, Alpharetta, GA 30022 (770) 664-6103
  • Columbus, OH
  • Roswell, GA
  • Hudson, OH
  • Akron, OH

Skills

Physics • Mathematical Modeling • Statistics • Science • Statistical Modeling • Data Analysis • Applied Mathematics • Physical Chemistry • Nanoparticles • Experimentation • Polymers • R&D • Research • Chemistry • Surface Chemistry • Nanostructures • Formal Methods • Aerosol Science • History of Science • Nanomaterials • Mathematics • Research Design • Public Speaking • Teaching • Materials Science • Research and Development • Public Health

Languages

French • Russian

Industries

Research

Resumes

Resumes

Leonid Turkevich Photo 1

Leonid Turkevich

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Location:
Cincinnati, OH
Industry:
Research
Skills:
Physics
Mathematical Modeling
Statistics
Science
Statistical Modeling
Data Analysis
Applied Mathematics
Physical Chemistry
Nanoparticles
Experimentation
Polymers
R&D
Research
Chemistry
Surface Chemistry
Nanostructures
Formal Methods
Aerosol Science
History of Science
Nanomaterials
Mathematics
Research Design
Public Speaking
Teaching
Materials Science
Research and Development
Public Health
Languages:
French
Russian

Publications

Wikipedia

Anthy L. Turkevich

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Anthony Leonid Turkevich (July 23, 1916 September 7, 2002) was an American radiochemist who was the first to determine the composition of the Moon's ...

Us Patents

Electret Treatment Of High Loft And Low Density Nonwoven Webs

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US Patent:
6365088, Apr 2, 2002
Filed:
Jun 24, 1999
Appl. No.:
09/339761
Inventors:
Preston Biggers Knight - Corinth MS
David Lewis Myers - Cumming GA
John Joseph Lassig - Lawrenceville GA
David Grant Midkiff - Alpharetta GA
Rick Leon Busby - Marietta GA
Anthony Lee Lamanac - Woodstock GA
Leonid Anthony Turkevich - Alpharetta GA
Assignee:
Kimberly-Clark Worldwide, Inc. - Neenah WI
International Classification:
H05F 300
US Classification:
264436, 246438, 246484, 4251748 E
Abstract:
The process of forming an electret nonwoven web, the process including the steps of providing a nonwoven web, generating a DC corona discharge from an apparatus including an anode electrically configured as a parallel device, and subjecting the web to DC corona discharge to form an electret.

Stable Electret Polymeric Articles

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US Patent:
6573205, Jun 3, 2003
Filed:
Jan 27, 2000
Appl. No.:
09/492607
Inventors:
David Lewis Myers - Cumming GA
John Joseph Lassig - Lawrenceville GA
Leonid Anthony Turkevich - Alpharetta GA
David Grant Midkiff - Alpharetta GA
Assignee:
Kimberly-Clark Worldwide, Inc. - Neenah WI
International Classification:
H01G 702
US Classification:
442414, 442221, 442286, 442301, 442370, 442381, 442394, 442400, 442401, 442408, 428131, 4283044, 428323, 428372, 428500, 55DIG 39, 307400
Abstract:
A porous polymeric sheet is provided having an electrostatic charge and comprising a zero-three composite of a polymeric matrix and a ferroelectric material dispersed therein. The polymeric component comprises a non-polar thermoplastic polymer, such as a polyolefin, and a second thermoplastic polymer having polar functional units, such as a telomer. The composite material is formed into a porous sheet and is electrically or corona poled to create an electret material which is well suited four use in various filtration, air-masking and dust wipe applications.

Ferroelectric Fibers And Applications Therefor

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US Patent:
6858551, Feb 22, 2005
Filed:
Mar 12, 1999
Appl. No.:
09/267973
Inventors:
Leonid Anthony Turkevich - Alpharetta GA, US
David Lewis Myers - Cumming GA, US
Assignee:
Kimberly-Clark Worldwide, Inc. - Neenah WI
International Classification:
B32B027/18
A62B018/02
US Classification:
442414, 428372, 428373, 12820527, 2642108
Abstract:
A fiber which includes a thermoplastic polymer and particles of a ferroelectric material dispersed therein. The thermoplastic polymer may be, for example, a polyolefin, such as polypropylene or polyethylene, and the ferroelectric material may be barium titanate. The ferroelectric material may be present at a level of from about 0. 01 to about 50 percent by weight (from about 0. 001 to about 13 percent by volume), and will have a longest dimension in a range of from about 10 nanometers to about 10 micrometers. The fiber may be exposed to an electric field. A plurality of the fibers may be employed to form a knitted or woven fabric or a nonwoven web. Also provided is a method of preparing fibers containing particles of a ferroelectric material. The method includes destructuring the ferroelectric material in the presence of a liquid and a surfactant to give destructured particles; the liquid is a solvent for the surfactant and the surfactant is adapted to stabilize the destructured particles against agglomeration. A blend of the stabilized, destructured ferroelectric material particles and a thermoplastic polymer then is formed and extruded to form fibers.

Stable Electret Polymeric Articles

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US Patent:
6893990, May 17, 2005
Filed:
Apr 8, 2003
Appl. No.:
10/409813
Inventors:
David Lewis Myers - Cumming GA, US
John Joseph Lassig - Lawrenceville GA, US
Leonid Anthony Turkevich - Alpharetta GA, US
David Grant Midkiff - Alpharetta GA, US
Assignee:
Kimberly Clark Worldwide, Inc. - Neenah WI
International Classification:
H01G007/02
B03C003/28
D01F006/04
D04H001/00
D04H003/00
US Classification:
442414, 442221, 442286, 442301, 442370, 442381, 442394, 442400, 442401, 442408, 428131, 4283044, 428323, 428372, 428500, 55DIG 39, 307400
Abstract:
A porous polymeric sheet is provided having an electrostatic charge and comprising a zero-three composite of a polymeric matrix and a ferroelectric material dispersed therein. The polymeric component comprises a non-polar thermoplastic polymer, such as a polyolefin, and a second thermoplastic polymer having polar functional units, such as a telomer. The composite material is formed into a porous sheet and is electrically or corona poled to create an electret material which is well suited four use in various filtration, air-masking and dust wipe applications.

Method Of Preparing Small Particle Dispersions

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US Patent:
58008667, Sep 1, 1998
Filed:
Dec 6, 1996
Appl. No.:
8/758749
Inventors:
David Lewis Myers - Cumming GA
Leonid Anthony Turkevich - Alpharetta GA
Assignee:
Kimberly-Clark Worldwide, Inc. - Neenah WI
International Classification:
B05D 700
B05D 138
B05D 312
US Classification:
427220
Abstract:
A method of preparing a dispersion of small particles in a polymeric precursor, which method involves providing a mixture of a particulate material and a surfactant in a nonaqueous solvent, forming a dispersion of the particulate material in the nonaqueous solvent, combining the resulting dispersion of particulate material in the nonaqueous solvent with a precursor material, and heating the combination of the dispersion of particulate material and the precursor material, with mixing, to a temperature sufficient to volatilize the nonaqueous solvent. The surfactant is soluble in the nonaqueous solvent and is adapted to stabilize the particulate material against agglomeration. The nonaqueous solvent swells the polymeric precursor near the boiling point of the nonaqueous solvent. The boiling point of the nonaqueous solvent is greater than a temperature at which the polymeric precursor may be mixed and below a temperature at which the polymeric precursor polymerizes or decomposes. In certain embodiments, the particulate material is an inorganic material.

Ferroelectric Fibers And Applications Therefor

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US Patent:
61625353, Dec 19, 2000
Filed:
Dec 6, 1996
Appl. No.:
8/762213
Inventors:
Leonid Anthony Turkevich - Alpharetta GA
David Lewis Myers - Cumming GA
Assignee:
Kimberly-Clark Worldwide, Inc.
International Classification:
D02G 300
D04H 158
US Classification:
428372
Abstract:
A fiber which includes a thermoplastic polymer and particles of a ferroelectric material dispersed therein. The thermoplastic polymer may be, for example, a polyolefin, such as polypropylene or polyethylene, and the ferroelectric material may be barium titanate. The ferroelectric material may be present at a level of from about 0. 01 to about 50 percent by weight (from about 0. 001 to about 13 percent by volume), and will have a longest dimension in a range of from about 10 nanometers to about 10 micrometers. The fiber may be exposed to an electric field. A plurality of the fibers may be employed to form a knitted or woven fabric or a nonwoven web. Also provided is a method of preparing fibers containing particles of a ferroelectric material. The method includes destructuring the ferroelectric material in the presence of a liquid and a surfactant to give destructured particles; the liquid is a solvent for the surfactant and the surfactant is adapted to stabilize the destructured particles against agglomeration. A blend of the stabilized, destructured ferroelectric material particles and a thermoplastic polymer then is formed and extruded to form fibers.

Surface Modification Of Hydrophobic Polymer Substrate

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US Patent:
59980230, Dec 7, 1999
Filed:
Jan 9, 1998
Appl. No.:
9/005399
Inventors:
Leonid Anthony Turkevich - Alpharetta GA
David Lewis Myers - Cumming GA
Assignee:
Kimberly-Clark Worldwide, Inc. - Neenah WI
International Classification:
B32B 2702
B32B 2732
US Classification:
428361
Abstract:
A method for coating the surface of a substrate composed of a hydrophobic polymer with a hydrophobic vinyl polymer. The method includes preparing a solution of the hydrophobic vinyl polymer in a polar nonaqueous solvent, such as 1-methyl-1-pyrrolidinone, in which the hydrophobic vinyl polymer is surface-active. The substrate then is treated with the solution under conditions sufficient to deposit the hydrophobic vinyl polymer on the substrate. The hydrophobic vinyl polymer may have readily hydrolyzable pendant groups which, upon hydrolysis thereof in an aqueous medium, will result in the formation of a hydrophilic vinyl polymer coating on the substrate. For example, the hydrophobic vinyl polymer may be poly(vinyl trifluoroacetate). Also provided are coated substrates, in which the substrate is a shaped article composed of a hydrophobic polymer. The shaped article may be, for example, a film, fiber, or nonwoven web.

Surface Modification Of Hydrophobic Polymer Substrate

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US Patent:
57336032, Mar 31, 1998
Filed:
Jun 5, 1996
Appl. No.:
8/658333
Inventors:
Leonid Anthony Turkevich - Alpharetta GA
David Lewis Myers - Cumming GA
Assignee:
Kimberly-Clark Corporation - Neenah WI
International Classification:
B05D 310
US Classification:
427340
Abstract:
A method for coating the surface of a substrate composed of a hydrophobic polymer with a hydrophobic vinyl polymer. The method includes preparing a solution of the hydrophobic vinyl polymer in a polar nonaqueous solvent, such as 1-methyl-1-pyrrolidinone, in which the hydrophobic vinyl polymer is surface-active. The substrate then is treated with the solution under conditions sufficient to deposit the hydrophobic vinyl polymer on the substrate. The hydrophobic vinyl polymer may have readily hydrolyzable pendant groups which, upon hydrolysis thereof in an aqueous medium, will result in the formation of a hydrophilic vinyl polymer coating on the substrate. For example, the hydrophobic vinyl polymer may be poly(vinyl trifluoroacetate). Also provided are coated substrates, in which the substrate is a shaped article composed of a hydrophobic polymer. The shaped article may be, for example, a film, fiber, or nonwoven web.
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Leonid A Turkevich from Cincinnati, OH, age ~74 Get Report