Stephen G Krause

US Patent:

7515397, Apr 7, 2009

Filed:

May 19, 2004

Appl. No.:

10/848970

Inventors:

David M. Reed - Douglassville PA, US
Sridhar Venigalla - Macungie PA, US
Ricky W. Kitchell - Douglassville PA, US
Stephen J. Krause - Phoenixville PA, US
Heather L. Enman - Bethlehem PA, US
Dorran L. Schultz - Perkiomenville PA, US
Jeffrey A. Kerchner - Fleetwood PA, US

Assignee:

Cabot Corporation - Boston MA

International Classification:

B32B 18/00

US Classification:

361528, 42359417, 264618, 428702, 428469, 428472, 205149, 205150, 361529

Abstract:

Methods to at least partially reduce a niobium oxide are described wherein the process includes mixing the niobium oxide and niobium powder to form a powder mixture that is then heat treated to form heat treated particles which then undergo reacting in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the niobium powder, and at a temperature and for a time sufficient to form an oxygen reduced niobium oxide. Oxygen reduced niobium oxides having high porosity are also described as well as capacitors containing anodes made from the oxygen reduced niobium oxides.

US Patent:

8110172, Feb 7, 2012

Filed:

Apr 7, 2009

Appl. No.:

12/419342

Inventors:

David M. Reed - Douglassville PA, US
Sridhar Venigalla - Macungie PA, US
Ricky W. Kitchell - Douglassville PA, US
Stephen J. Krause - Phoenixville PA, US
Heather L. Enman - Bethlehem PA, US
Dorran L. Schultz - Perkiomenville PA, US
Jeffrey A. Kerchner - Fleetwood PA, US

Assignee:

Cabot Corporation - Boston MA

International Classification:

C01G 33/00

US Classification:

42359417, 23313 R

Abstract:

Methods to at least partially reduce a niobium oxide are described wherein the process includes mixing the niobium oxide and niobium powder to form a powder mixture that is then heat treated to form heat treated particles which then undergo reacting in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the niobium powder, and at a temperature and for a time sufficient to form an oxygen reduced niobium oxide. Oxygen reduced niobium oxides having high porosity are also described as well as capacitors containing anodes made from the oxygen reduced niobium oxides.

US Patent:

20040009350, Jan 15, 2004

Filed:

Jul 12, 2002

Appl. No.:

10/194935

Inventors:

Stephen Krause - Phoenixville PA, US
Sridhar Venigalla - Macungie PA, US
Stephen Constantino - Reading PA, US

International Classification:

B32B005/16

US Classification:

428/386000, 428/403000

Abstract:

Methods of heat treating barium titanate-based particles are provided, as well as compositions and devices formed from the particles. The methods involve forming a coating on surfaces of barium titanate-based particles and heating the coated particles, for example, to a temperature of greater than about 400 C. and less than about 1150 C. The heating step may increase the bond strength between the coating and barium titanate-based particles, reduce the average specific surface area of the coated particles, remove water present in the coating, and remove other contaminants from the composition, amongst other advantages. These effects of heat treating can improve the performance of devices (e.g., MLCCs) that include dielectric layers formed from the barium titanate-based particles.

US Patent:

20120107224, May 3, 2012

Filed:

Dec 27, 2011

Appl. No.:

13/337343

Inventors:

David M. Reed - Douglassville PA, US
Sridhar Venigalla - Macungie PA, US
Ricky W. Kitchell - Douglassville PA, US
Stephen J. Krause - Phoenixville PA, US
Heather L. Enman - Bethlehem PA, US
Dorran L. Schultz - Perkiomenville PA, US
Jeffrey A. Kerchner - Fleetwood PA, US

Assignee:

CABOT CORPORATION - Boston MA

International Classification:

C01G 33/00
B29B 9/16
B29B 9/08
B29C 67/04

US Classification:

42359417, 264 43, 264101, 264118, 264109

Abstract:

Methods to at least partially reduce a niobium oxide are described wherein the process includes mixing the niobium oxide and niobium powder to form a powder mixture that is then heat treated to form heat treated particles which then undergo reacting in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the niobium powder, and at a temperature and for a time sufficient to form an oxygen reduced niobium oxide. Oxygen reduced niobium oxides having high porosity are also described as well as capacitors containing anodes made from the oxygen reduced niobium oxides.

US Patent:

20190271068, Sep 5, 2019

Filed:

Feb 27, 2019

Appl. No.:

16/286842

Inventors:

- Wellesley Hills MA, US
Aamir Dawood Abid - Spring City PA, US
Stephen Krause - Phoenixville PA, US

Assignee:

Global Advanced Metals USA, Inc. - Wellesley Hills MA

International Classification:

C23C 14/34
B22F 1/00
B22F 3/24
B22F 9/20
C22C 28/00
C22C 1/04

Abstract:

The present invention relates to sputtering targets and other metal articles as well as methods of making the same. More particularly, the present invention relates to methods for forming powder metallurgy sputtering targets and other metallurgical articles made from metal powders that include spherical metal powders, and the resulting product.