Richard Wu

US Patent:

6353087, Mar 5, 2002

Filed:

Aug 17, 2000

Appl. No.:

09/641166

Inventors:

James Michael Lipovsky - Langhorne PA
Dawn Marie McFadden - Yardley PA
Richard Shu-Hua Wu - Fort Washington PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08J 300

US Classification:

528481, 528500

Abstract:

This invention relates to a process for stripping polymer reaction compositions. The process reduces gel in the polymer reaction composition by adjusting the pH of the polymer to from 7 to 11 prior to stripping and maintaining the adjusted pH during stripping, maintaining the temperature of the polymer at from 30Â C. to 70Â C. during stripping, utilizing a continuous stripping operation, or combinations thereof.

US Patent:

7368176, May 6, 2008

Filed:

Jan 14, 2004

Appl. No.:

10/542945

Inventors:

Richard Wu - Chelmsford MA, US
James Cornie - Cambridge MA, US
Stephen Cornie - Watertown MA, US
Hank Breit - Attleboro MA, US
Larry Ballard - Denver CO, US
Richard Malen - Tyngsboro MA, US
Prabhat Kumar - Framingham MA, US
John Shields - Cleveland OH, US
Robert Desberg - Scottsdale AZ, US

Assignee:

H.C. Starck Inc. - Newton MA
Metal Matrix Cast Composites, Inc. - Waltham MA

International Classification:

B32B 15/04
B32B 15/14
B32B 15/20

US Classification:

428634, 428114, 4282931, 428457, 4285395, 428650

Abstract:

The invention relates to a method that involves (a) removing graphite from at least one surface of a metal graphite composite material; (b) chemically cleaning or plasma etching the surface of the metal graphite composite material; (c) applying a metal-containing material to the surface of the chemically cleaned or plasma etched metal graphite composite material, and thereby forming an intermediate layer; (d) applying a metal coating on the intermediate layer, and thereby forming a composite material. The invention also relates to a composite material comprising (a) a metal graphite composite substrate having at least one surface that is substantially free of graphite; (b) a metal-containing intermediate layer located on a surface of the substrate; and (c) a metal coating on the intermediate layer.

US Patent:

7645494, Jan 12, 2010

Filed:

Mar 27, 2008

Appl. No.:

12/056798

Inventors:

Richard Wu - Chelmsford MA, US
James Cornie - Cambridge MA, US
Stephen Cornie - Watertown MA, US
Hank Breit - Attleboro MA, US
Larry Ballard - Denver CO, US
Richard R. Malen - Tyngsboro MA, US
Prabhat Kumar - Framingham MA, US
John Shields - Cleveland OH, US
Robert Desberg - Scottsdale AZ, US

Assignee:

H.C. Starck Inc. - Newton MA

International Classification:

C23C 14/02
B05D 3/00
B05D 3/04
C23F 1/00

US Classification:

427534, 427299, 427307, 427309, 216 75, 216 81, 216100

Abstract:

The invention relates to a method that involves (a) removing graphite from at least one surface of a metal graphite composite material; (b) chemically cleaning or plasma etching the surface of the metal graphite composite material; (c) applying a metal-containing material to the surface of the chemically cleaned or plasma etched metal graphite composite material, and thereby forming an intermediate layer; (d) applying a metal coating on the intermediate layer, and thereby forming a composite material. The invention also relates to a composite material comprising (a) a metal graphite composite substrate having at least one surface that is substantially free of graphite; (b) a metal-containing intermediate layer located on a surface of the substrate; and (c) a metal coating on the intermediate layer.

US Patent:

7754185, Jul 13, 2010

Filed:

Jan 18, 2006

Appl. No.:

11/334140

Inventors:

Lawrence F. McHugh - North Andover MA, US
Prabhat Kumar - Framingham MA, US
David Meendering - Coldwater MI, US
Richard Wu - Chelmsford MA, US
Gerhard Wötting - Coburg, DE
Richard Nicholson - Chardon OH, US

Assignee:

H.C. Starck Inc. - Newton MA

International Classification:

C01G 39/02
B22F 3/15

US Classification:

423606, 419 26, 419 49

Abstract:

The invention relates to high purity MoOpowder by reduction of ammonium molybdate or molybdenum trioxide using hydrogen as the reducing agent in a rotary or boat furnace. Consolidation of the powder by press/sintering, hot pressing, and/or HIP is used to make discs, slabs, or plates, which are used as sputtering targets. The MoOdisc, slab, or plate form is sputtered on a substrate using a suitable sputtering method or other physical means to provide a thin film having a desired film thickness. The thin films have properties such as electrical, optical, surface roughness, and uniformity comparable or superior to those of indium-tin oxide (ITO) and zinc-doped ITO in terms of transparency, conductivity, work function, uniformity, and surface roughness. The MoOand MoOcontaining thin films can be used in organic light-emitting diodes (OLED), liquid crystal display (LCD), plasma display panel (PDP), field emission display (FED), thin film solar cell, low resistivity ohmic contacts, and other electronic and semiconductor devices.

US Patent:

7850876, Dec 14, 2010

Filed:

Nov 11, 2008

Appl. No.:

12/268713

Inventors:

Prabhat Kumar - Framingham MA, US
Richard Wu - Chelmsford MA, US
Shuwei Sun - Framingham MA, US

Assignee:

H.C. Starck Inc. - Newton MA

International Classification:

H01B 1/02

US Classification:

2525201, 252512, 252515, 2525181, 2525205, 20429813, 428142, 428432, 428701

Abstract:

The present invention is directed to a composition consisting essentially of:.

US Patent:

8197894, Jun 12, 2012

Filed:

Nov 8, 2007

Appl. No.:

11/937164

Inventors:

Steven A. Miller - Canton MA, US
Olaf Schmidt-Park - Needham MA, US
Prabhat Kumar - Framingham MA, US
Richard Wu - Chelmsford MA, US
Shuwei Sun - Framingham MA, US
Stefan Zimmermann - Laufenburg, DE

Assignee:

H.C. Starck GmbH - Golsar
H.C. Starck Inc. - Newton MA

International Classification:

B05D 1/12

US Classification:

427192, 427201, 427427

Abstract:

In various embodiments, sputter-target formation includes application of a layer having an intermediate coefficient of thermal expansion between the backing plate and the target material.

US Patent:

8491959, Jul 23, 2013

Filed:

May 7, 2012

Appl. No.:

13/465475

Inventors:

Steven A. Miller - Canton MA, US
Olaf Schmidt-Park - Needham MA, US
Prabhat Kumar - Framingham MA, US
Richard Wu - Chelmsford MA, US
Shuwei Sun - Framingham MA, US
Stefan Zimmerman - Laufenburg, DE

Assignee:

H.C. Starck Inc. - Newton MA

International Classification:

B05D 1/02

US Classification:

427142, 427192, 427427

Abstract:

In various embodiments, a sputtering target initially formed by ingot metallurgy or powder metallurgy and comprising a sputtering-target material is provided, the sputtering-target material (i) comprising a refractory metal, (ii) defining a recessed furrow therein, and (iii) having a first grain size and a first crystalline microstructure. A powder is spray-deposited within the furrow to form a layer therein, the layer (i) comprising the metal, (ii) having a second grain size finer than the first grain size, and (iii) having a second crystalline microstructure more random than the first crystalline microstructure. Spray-depositing the powder within the furrow forms a distinct boundary line between the layer and the sputtering-target material.

US Patent:

20050197418, Sep 8, 2005

Filed:

Feb 4, 2005

Appl. No.:

11/051380

Inventors:

Louis Graziano - Doylestown PA, US
Richard Wu - Fort Washington PA, US

International Classification:

C08K003/00

US Classification:

522074000

Abstract:

A polymer composition which is crosslinked and insoluble in radiation curable monomers, prepolymers, oligomers, and mixtures thereof, is suitable for formulation into radiation curable compositions, for example, as binders for formulation in radiation curable ink jet ink compositions. Such crosslinked, insoluble polymer compositions impart improved application and curing characteristics to ink jet ink compositions without loss of acceptable jettability characteristics. The polymer composition may be blended with radiation curable monomers, prepolymers, oligomers, or mixtures thereof, to form a radiation curable binder blend for formulation into a radiation curable ink jet ink composition. A radiation curable ink jet ink composition including at least one crosslinked, insoluble polymer binder composition, a liquid medium and a colorant is also provided.