Roy Tom Coyle

US Patent:

6919125, Jul 19, 2005

Filed:

Aug 1, 2003

Appl. No.:

10/632152

Inventors:

Kriss Allen Bennett - Torrance CA, US
Roy Tom Coyle - Redondo Beach CA, US

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

B32B003/00

US Classification:

428210, 428209, 428212, 4284722, 174258

Abstract:

Ceramic substrates () for microelectronic modules are formed in multiple layers (& ) fused into a unitary one-piece assembly. The layers contain the same ceramic material but in different purity so that one outer layer () is optimal in composition for bonding to a thick film conductor () and the other outer layer () is optimal in composition for bonding to a thin film conductor (). In a dual composition substrate embodiment one layer is formed of a 96% alumina composition and the second layer is formed of a 99. 6% alumina composition.

US Patent:

20050205197, Sep 22, 2005

Filed:

May 11, 2005

Appl. No.:

11/127373

Inventors:

Kriss Bennett - Torrance CA, US
Roy Coyle - Redondo Beach CA, US

International Classification:

C03B029/00

US Classification:

156089110, 264619000, 264615000, 264618000, 264655000

Abstract:

Ceramic substrates () for microelectronic modules are formed in multiple layers () fused into a unitary one-piece assembly. The layers contain the same ceramic material but in different purity so that one outer layer () is optimal in composition for bonding to a thick film conductor () and the other outer layer () is optimal in composition for bonding to a thin film conductor (). In a dual composition substrate embodiment one layer is formed of a 96% alumina composition and the second layer is formed of a 99.6% alumina composition.

US Patent:

52215261, Jun 22, 1993

Filed:

May 24, 1991

Appl. No.:

7/705089

Inventors:

Dongxin Qi - Placentia CA
Roy T. Coyle - Yorba Linda CA
Richard D. Tait - Fullerton CA
Rick J. Orth - Diamond Bar CA

Assignee:

Advanced Industrial Materials - Yorba Linda CA

International Classification:

C01B 3136

US Classification:

423345

Abstract:

A process for producing silicon carbide whiskers in which a particulate form of carbon is combined with a silicon component, a boron component and seeding component to form a mixture which is then subjected to temperatures above about 1300. degree. C. in a nonoxidizing atmosphere such that carbon reacts with silica to form silicon carbide whiskers. The preferred particulate carbon, silicon component, boron component and seeding component are, respectively, carbon black, fumed silica, boron oxide and cobalt, iron or nickel. The size and shape of the whiskers can be controlled by varying the size of the seeding component and the concentration of the boron component.

US Patent:

50376268, Aug 6, 1991

Filed:

Nov 22, 1988

Appl. No.:

7/275329

Inventors:

Phillman N. Ho - Yorba Linda CA
Roy T. Coyle - Yorba Linda CA

Assignee:

Union Oil Company of California - Los Angeles CA

International Classification:

G01B 3136

US Classification:

423345

Abstract:

A processing for producing silicon carbide whiskers in which a source of silica is mixed with a residual oil or crude petroleum and the resultant mixture is heated in a substantially nonoxidizing atmosphere at temperature sufficiently high to carbonize the residual oil or crude petroleum, thereby forming an intimate mixture of carbon and silica. The intimate mixture is then heated in a nonoxidizing atmosphere in the presence of a seeding component comprising an element selected from the group consisting of boron, the rare earths, Group IA, Group IB, Group VB, Group VIB, Group VIIB and Group VIII of the Periodic Table of Elements at temperatures sufficiently high to induce the reaction between carbon and silica to form silicon carbide. The resultant silicon carbide product will contain a relatively high concentration of silicon carbide whiskers.

US Patent:

57953848, Aug 18, 1998

Filed:

Jul 20, 1995

Appl. No.:

8/504779

Inventors:

Roy Tom Coyle - Yorba Linda CA
Jan Magnus Ekelund - Jarna, SE

Assignee:

Sandvik AB - Sandviken
Advanced Industrial Materials - Yorba Linda CA

International Classification:

C30B 2962

US Classification:

117 87

Abstract:

The presently claimed invention relates to a method of producing, in large volumes and at low cost, transition metal carbide, nitride or carbonitride whiskers, preferably submicron, having excellent reinforcing properties. These whiskers are suitable for use as a reinforcement in a wide range of materials, including metals, intermetallics, plastics, ceramics and metallic bonded hard material. The basic idea is the use of a carbon source with a volatile part which volatiles at temperatures up to 1000. degree. C. Transition metal oxide or alkali compounds thereof in amounts to satisfy the stoichiometric requirements of the desired carbide or nitride is mixed with the carbon powder along with an alkali metal chloride powder as a volatilization agent for the metal and a catalyst for the whisker growth such as Ni or Co. The reactant powders are blended in some typical manner using a high speed blender so as to intimately mix them. Finally, the starting material is subjected to nitriding, carbonizing or carbonitriding heat treatments in order to produce the desired whiskers.

US Patent:

49632868, Oct 16, 1990

Filed:

Dec 19, 1988

Appl. No.:

7/286271

Inventors:

Roy T. Coyle - Yorba Linda CA
Phillman N. Ho - Yorba Linda CA

Assignee:

Union Oil Company of California - Los Angeles CA

International Classification:

C09K 300

US Classification:

25218314

Abstract:

Silicon carbide is produced by a method which includes dispersing silica in a residual oil, carbonizing the oil at elevated temperatures, and heating the carbonized dispersion to form silicon carbide. Preferably, the silica is an amorphous type. Preferred residual oils are produced by distilling away crude petroleum components at temperatures up to about 350. degree. C. The silicon carbide product typically contains a mixture of powder and whisker configurations, and has many particles with a dimension less than about 1 micrometer.