Hui Lel Z Du

US Patent:

7892872, Feb 22, 2011

Filed:

Jan 2, 2008

Appl. No.:

12/006459

Inventors:

Henry Hieslmair - San Francisco CA, US
Shivkumar Chiruvolu - San Jose CA, US
Hui Du - Sunnyvale CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

H01L 21/00
H01L 29/06

US Classification:

438 45, 977773, 977774, 977786, 257 28, 257 65, 257E33017, 257E33039, 4272133, 4273884, 429503

Abstract:

Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silican particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.

US Patent:

8263423, Sep 11, 2012

Filed:

Jul 26, 2011

Appl. No.:

13/191392

Inventors:

Henry Hieslmair - San Francisco CA, US
Shivkumar Chiruvolu - San Jose CA, US
Hui Du - Sunnyvale CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

H01L 21/00

US Classification:

438 45, 438500, 438501, 438933, 257E29297, 257E33017, 257E33039, 977773, 977774, 977786

Abstract:

Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silican particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.

US Patent:

8314176, Nov 20, 2012

Filed:

Dec 31, 2009

Appl. No.:

12/650778

Inventors:

Hui Du - Sunnyvale CA, US
Shivkumar Chiruvolu - San Jose CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

C08K 3/22
C08K 3/28

US Classification:

524428, 524430

Abstract:

Desirable composites of polysiloxane polymers and inorganic nanoparticles can be formed based on the appropriate selection of the surface properties of the particles and the chemical properties of the polymer. High loadings of particles can be achieved with good dispersion through the polymer. The composites can have good optical properties. In some embodiments, the inorganic particles are substantially free of surface modification.

US Patent:

8363306, Jan 29, 2013

Filed:

Apr 4, 2011

Appl. No.:

13/079607

Inventors:

Hui Du - Milpitas CA, US
Xiaojia Wang - Fremont CA, US
HongMei Zang - Sunnyvale CA, US
Haiyan Gu - Fremont CA, US

Assignee:

SiPix Imaging, Inc. - Fremont CA

International Classification:

G02B 26/00
B05D 1/36
G03G 17/04

US Classification:

359296, 4274071, 430 32

Abstract:

The present invention is directed to an electrophoretic display fluid, in particular, pigment particles dispersed in a solvent or solvent mixture, and methods for their preparation. The pigment particles generated, according to the present invention, are stable in solvent under an electric field, have desired charge and charge density on the particle surface.

US Patent:

8399878, Mar 19, 2013

Filed:

Aug 27, 2012

Appl. No.:

13/595234

Inventors:

Henry Hieslmair - San Francisco CA, US
Shivkumar Chiruvolu - San Jose CA, US
Hui Du - Sunnyvale CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

H01L 33/00
H01L 29/786

US Classification:

257 19, 257 65, 257E33017, 257E33039, 257E29297, 438933, 977773

Abstract:

Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silica particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.

US Patent:

8404771, Mar 26, 2013

Filed:

Jul 26, 2012

Appl. No.:

13/559085

Inventors:

Hui Du - Sunnyvale CA, US
Shivkumar Chiruvolu - San Jose CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

C08K 3/22
C08K 3/28

US Classification:

524428, 524430

Abstract:

Desirable composites of polysiloxane polymers and inorganic nanoparticles can be formed based on the appropriate selection of the surface properties of the particles and the chemical properties of the polymer. High loadings of particles can be achieved with good dispersion through the polymer. The composites can have good optical properties. In some embodiments, the inorganic particles are substantially free of surface modification.

US Patent:

8632702, Jan 21, 2014

Filed:

Jan 2, 2008

Appl. No.:

12/006453

Inventors:

Henry Hieslmair - San Francisco CA, US
Vladimir K. Dioumaev - Mountain View CA, US
Shivkumar Chiruvolu - San Jose CA, US
Hui Du - Sunnyvale CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

H01B 1/24

US Classification:

2525213, 252500, 977773, 977774, 977775, 977777, 977784

Abstract:

Highly uniform silicon/germanium nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silicon/germanium particles can be surface modified to form the dispersions. The silicon/germanium nanoparticles can be doped to change the particle properties. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to form selectively doped deposits of semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.

US Patent:

7993947, Aug 9, 2011

Filed:

Jan 21, 2011

Appl. No.:

13/011596

Inventors:

Henry Hieslmair - San Francisco CA, US
Shivkumar Chiruvolu - San Jose CA, US
Hui Du - Sunnyvale CA, US

Assignee:

NanoGram Corporation - Milpitas CA

International Classification:

H01L 21/00
H01L 29/06

US Classification:

438 45, 438500, 438501, 438933, 257 19, 257 55, 257 63, 257 65, 257E29297, 428641, 977773

Abstract:

Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silican particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.