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Natalia V Levit

from Glen Allen, VA
Age ~61
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Also known as:
Natalia Te Levit, Natalia C Levit, Natalia L Levit, Natalia B Levit, Natalia V Klioutchnikov, Natalia V Klioutchniko, Natalia Levit Living, Natalia A
Phone and address:
5120 Dorin Hill Ct, Glen Allen, VA 23059
(804) 868-5600
Related to:
Veronica M Brown, 57
Connected to:
Guy G Levit, 54Jeffrey B Levit, 49Jennifer T Levit, 31Lawrence B Levit, 82Leonid M Levit, 59Mariano Levit, 53Orly L Levit, 57Tamara M Levit, 55Vadim Levit, 34Vitaliy Levit, 38

Natalia Levit Phones & Addresses

  • 5120 Dorin Hill Ct, Glen Allen, VA 23059 (804) 868-5600
  • Hampton, VA
  • Arlington, VA
  • Henrico, VA
  • Richmond, VA
  • Alexandria, VA
  • Midlothian, VA
  • Lowell, MA
  • Cambridge, MA
  • 5120 Dorin Hill Ct, Glen Allen, VA 23059

Publications

Us Patents

Molecular Imprinting Of Small Particles, And Production Of Small Particles From Solid State Reactants

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US Patent:
7442754, Oct 28, 2008
Filed:
Oct 10, 2003
Appl. No.:
10/682432
Inventors:
Gary Tepper - Glen Allen VA, US
Dmitry Pestov - Richmond VA, US
Natalia Levit - Richmond VA, US
Gary Wnek - Midlothian VA, US
Assignee:
Virginia Commonwealth University - Richmond VA
International Classification:
C08F 20/04
C08J 9/26
US Classification:
526328, 526318, 526310, 521 61, 521 63
Abstract:
Small particles of polymeric material are produced by expansion of a mixture of monomers and a propellant. The size and shape of the particles can be precisely tailored by materials selection and expansion conditions. Particles of 10 nanometers to 100 microns can be produced. If monomers exhibiting solid state reactivity are utilized, the particles thus formed can be polymerized at any time after formation. The particles produced by this method can be molecularly imprinted by incorporating a template into the particle prior to fully curing the particle, in a manner which allows selective extraction of the template from the cured particle after formation without deformation of the imprint site. A two step polymerization process allows the particles to be deposited on and adhered to a wide variety of substrates without additional agents. The molecularly imprinted particles can be used in a wide variety of applications including the selective binding of analyte from a sample, where the analyte is the same as the template or is of substantially the same size and has a similar arrangement of chemical functional groups.

Broadband Passive Distributed Tuned Vibration And Acoustic Absorber For Modally Dense Structures

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US Patent:
8025124, Sep 27, 2011
Filed:
Oct 31, 2008
Appl. No.:
12/262778
Inventors:
Natalia V Levit - Glen Allen VA, US
Mark Allan Lamontia - Landenberg PA, US
David M Mellen - Wilmington DE, US
Kathleen Kondylas - Newburyport MA, US
Christopher R Fuller - Virginia Beach VA, US
Assignee:
E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:
E04B 1/82
US Classification:
181286, 181284
Abstract:
A passive distributed vibration absorber that utilizes multiple discrete mass elements and a viscoelastic layer and that effectively attenuates vibration in modally dense structures excited by a broadband input noise excitation. and is tunable to multiple natural frequencies in such modally dense vibrating structures including low frequencies.

Molecular Imprinting Of Small Particles, And Production Of Small Particles From Solid State Reactants

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US Patent:
20020102312, Aug 1, 2002
Filed:
Jan 24, 2002
Appl. No.:
10/054708
Inventors:
Gary Tepper - Glen Allen VA, US
Dmitry Pestov - Richmond VA, US
Natalia Levit - Richmond VA, US
Gary Wnek - Midlothian VA, US
International Classification:
A61K009/16
B05D001/12
B29C035/08
B29C069/00
B29C071/02
B29C071/04
US Classification:
424/490000, 428/403000, 264/236000, 264/344000, 264/488000, 264/492000, 264/494000, 264/085000, 264/131000, 427/180000, 427/195000
Abstract:
Small particles of polymeric material are produced by expansion of a mixture of monomers and a propellant. The size and shape of the particles can be precisely tailored by materials selection and expansion conditions. Particles of 10 nanometers to 100 microns can be produced. If monomers exhibiting solid state reactivity are utilized, the particles thus formed can be polymerized at any time after formation. The particles produced by this method can be molecularly imprinted by incorporating a template into the particle prior to fully curing the particle, in a manner which allows selective extraction of the template from the cured particle after formation without deformation of the imprint site. A two step polymerization process allows the particles to be deposited on and adhered to a wide variety of substrates without additional agents. The molecularly imprinted particles can be used in a wide variety of applications including the selective binding of analyte from a sample, where the analyte is the same as the template or is of substantially the same size and has a similar arrangement of chemical functional groups. Imprinted molecularly imprinted particles can be used for targeted delivery of agents in biological applications. Non-imprinted particles formed by the expansion technique using monomers of solid state reactivity can be used in optical data storage systems.

Acoustic Absorber With Barrier Facing

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US Patent:
20090173569, Jul 9, 2009
Filed:
Dec 19, 2008
Appl. No.:
12/339924
Inventors:
Natalia V. Levit - Glen Allen VA, US
Eric W. Teather - Elkton MD, US
International Classification:
E04B 1/84
US Classification:
181286, 181290, 181294
Abstract:
An acoustic absorber includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The use of the facing improves the acoustic absorption of ambient sound at a frequency below about Hz. The facing provides a barrier to moisture and particles including microorganisms so that the absorber is suitable for use in environments in which cleanliness is critical.

Acoustically Absorbent Ceiling Tile Having Barrier Facing With Diffuse Reflectance

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US Patent:
20090173570, Jul 9, 2009
Filed:
Dec 19, 2008
Appl. No.:
12/339951
Inventors:
Natalia V. Levit - Glen Allen VA, US
Eric W. Teather - Elkton MD, US
International Classification:
E04B 1/84
US Classification:
181286, 181290
Abstract:
An acoustically absorbent ceiling tile includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The facing has highly diffuse reflectance of light, and a reflectance of greater than about 86%. The use of the facing improves the acoustic absorption of ambient sound at frequencies below about 1200 Hz. The facing provides a barrier to moisture and particles including microorganisms so that the ceiling tile is suitable for use in environments in which cleanliness is critical.

Polyimide Nanoweb

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US Patent:
20130005940, Jan 3, 2013
Filed:
Jun 26, 2012
Appl. No.:
13/532866
Inventors:
T. Joseph Dennes - Parkesburg PA, US
Glen E. Simmonds - Avondale PA, US
Pankaj Arora - Chesterfield VA, US
Natalia V. Levit - Glen Allen VA, US
Assignee:
E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
C08G 73/10
US Classification:
528353
Abstract:
A nanoweb that contains a plurality of nanofibers wherein the nanofibers contain a fully aromatic polyimide that is characterized by having a crystallinity index (CI) and a degree of imidization (DOI). The product of the DOI and the CI is between 0.08 and 0.25 or above a lower limit to obtain a desired tensile strength and/or toughness. The nanoweb may for example have a tensile strength per unit basis weight of greater than 15 kg/cmper gram per square meter unit of basis weight.

Lithium Battery Separator With Shutdown Function

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US Patent:
20130017431, Jan 17, 2013
Filed:
Jan 19, 2012
Appl. No.:
13/353453
Inventors:
SIMON FRISK - NEWARK DE, US
NATALIA V. LEVIT - GLEN ALLEN VA, US
PANKAJ ARORA - CHESTERFIELD VA, US
Assignee:
E. I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
H01M 2/16
B05D 5/12
US Classification:
429145, 429253, 427 58
Abstract:
This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator comprises a nonwoven nanoweb comprising a coating composed of a plurality of thermoplastic particles having particle size larger than the mean flow pore size of the nanoweb. The coating flows at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact.

Lithium Battery Separator With Shutdown Function

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US Patent:
20130022858, Jan 24, 2013
Filed:
Jan 19, 2012
Appl. No.:
13/353468
Inventors:
Stephen Mazur - Wilmington DE, US
Simon Frisk - Newark DE, US
Natalia V. Levit - Glen Allen VA, US
Assignee:
E.I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
H01M 2/14
B05D 1/16
B32B 5/26
B32B 5/02
H01M 2/16
US Classification:
429145, 442 59, 442 74, 442393, 427 58
Abstract:
This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator is a laminate that contains a nonwoven nanoweb and a porous layer composed of a plurality of thermoplastic particles having particle size smaller than the mean flow pore size of the nanoweb. The shutdown layer melts and starts to flow at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact.
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Natalia V Levit from Glen Allen, VA, age ~61 Get Report