Hui 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:

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:

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.

US Patent:

20100028988, Feb 4, 2010

Filed:

Jul 29, 2009

Appl. No.:

12/511839

Inventors:

Daniel Y. Chu - Hercules CA, US
Hui Du - San Ramon CA, US

Assignee:

BIO-RAD LABORATORIES, INC., a corporation of the state of Delaware - Hercules CA

International Classification:

C12M 1/34
B29C 55/00

US Classification:

4352884, 264101, 264291

Abstract:

A multi-well plate with wells having ultra-thin walls and yet with sufficient structural rigidity to allow reliable use of the plate in automated instrumentation is formed by first forming a plate blank by injection molding, the blank being of a thickness that provides the desired rigidity, and then subjecting the blank to vacuum forming to stretch designated areas in the blank to form wells or to extend wells already formed, the stretching resulting in a reduction in thickness of the molded resin at the walls of the wells only.

US Patent:

20120112131, May 10, 2012

Filed:

Nov 2, 2011

Appl. No.:

13/287704

Inventors:

Yu Li - Fremont CA, US
Hui Du - Milpitas CA, US
Yayong Liu - Fremont CA, US
Haiyan Gu - Fremont CA, US
HongMei Zang - Fremont CA, US

International Classification:

H01B 1/12
C08F 292/00

US Classification:

252500, 526172

Abstract:

The present invention is directed to an electrophoretic dispersion comprising pigment particles dispersed in a solvent or solvent mixture, wherein said pigment particles comprises at least one polymer chain comprising a terminal thiocarbonylthio group, attached to the particle surface. The invention also relates to pigment particles suitable for use in an electrophoretic dispersion and methods for their preparation through a RAFT polymerization technique.

US Patent:

20130077155, Mar 28, 2013

Filed:

Sep 23, 2011

Appl. No.:

13/243751

Inventors:

Ming Wang - Union City CA, US
Yu Li - Fremont CA, US
Hui Du - Milpitas CA, US
Xiaojia Wang - Fremont CA, US
Haiyan Gu - Fremont CA, US
Roman Ivanov - Milpitas CA, US
Robert Sprague - Saratoga CA, US

International Classification:

G02F 1/00
H01B 1/12

US Classification:

359321, 252500

Abstract:

The present invention is directed to an electrophoretic fluid comprising uncharged or lightly charged neutral buoyancy particles. The resulting fluid can improve not only image stability but also contrast ratio of a display device, without significantly affecting the switching speed. The present invention is also directed to an electrophoretic display comprising display cells filled with the electrophoretic fluid.