Edwin Samuel Marston from 201 Weldin Rd, Wilmington, DE 19803, age 73, Phone: 302 765-3641

Process For Preparing Superparamagnetic Transition Metal Nanoparticles
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US Patent:

20070085053, Apr 19, 2007
Filed:

Oct 14, 2005
Appl. No.:

11/250336
Inventors:

John Gergely - Avondale PA, US
Edwin Marston - Wilmington DE, US
Shekhar Subramoney - Hockessin DE, US
Lu Zhang - Midlothian VA, US
International Classification:

C01G 49/08
US Classification:

252062560, 977900000
Abstract:

A process for preparing superparamagnetic transition metal nanoparticles by introducing into a gas stream a hydrocarbon and a transition metal carboxyl wherein the transition metal carbonyl is introduced downstream from the hydrocarbon; wherein at the point of introduction of the hydrocarbon the gas stream is in the form of a plasma, and wherein at the point of introduction of the transition metal carbonyl the gas stream is at a temperature of at least 1000 C.; followed by quenching to form carbon-coated transition metal nanoparticles; and wherein the gas stream consists essentially of at least one inert gas and hydrogen.

Compositions Of Carbon Nanosheets And Process To Make The Same
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US Patent:

20100072430, Mar 25, 2010
Filed:

May 5, 2006
Appl. No.:

11/418903
Inventors:

John S. Gergely - Avondale PA, US
Edwin S. Marston - Wilmington DE, US
Shekhar Subramoney - Hockessin DE, US
Lu Zhang - Midlothian VA, US
International Classification:

H01B 1/04
H01B 1/02
B01J 19/12
US Classification:

252504, 252502, 252506, 20415763, 977755
Abstract:

This invention relates to free-flowing compositions of carbon nanosheets and core-shell particles, and to a plasma-torch process for making them.

Cured Compositions Containing Fine Magnetic Particles And A Process For Preparing Same And Their Use
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US Patent:

20060142419, Jun 29, 2006
Filed:

Oct 14, 2005
Appl. No.:

11/251259
Inventors:

Jingjing Xu - Wilmington DE, US
Charles Molnar - Wilmington DE, US
Shekhar Subramoney - Hockessin DE, US
Michael Crawford - Glen Mills PA, US
John Gergely - Avondale PA, US
Lu Zhang - Midlothian VA, US
Edwin Marston - Wilmington DE, US
International Classification:

C09D 11/00
C09D 5/00
US Classification:

523161000, 977900000
Abstract:

The present invention is a dispersion composition comprising (1) a curable mixture of monomers, oligomers, or a combination thereof; and (2) superparamagnetic particles dispersed in the mixture of part (1) and a method for preparing such superparamagnetic particles. The composition of the present invention can be useful as a tool for detecting and/or deterring theft, counterfeiting, or the like in commercial transactions.