William L Sweeney

US Patent:

20040008200, Jan 15, 2004

Filed:

Jul 12, 2002

Appl. No.:

10/194446

Inventors:

Nathaniel Naegle - Pleasanton CA, US
William Sweeney - Fremont CA, US
Wayne Morse - Fremont CA, US

International Classification:

G06F015/80
G06T001/20

US Classification:

345/505000, 345/506000

Abstract:

A graphics system comprising a plurality of rendering pipelines and a scheduling network. Each rendering pipeline couples to the scheduling network, and includes a media processor, a rendering unit and a memory. A communication bus may couple the scheduling network and the memory of each rendering pipeline. The media processor in each rendering pipeline may direct the saving of state information of the corresponding rendering pipeline to the corresponding memory in response to receiving a corresponding context switch indication. A first of the media processors initiates the transfer of a resume token to the scheduling network through the corresponding rendering pipeline if the context switch occurs during an ordered processing mode. The scheduling network unblocks one or more rendering pipelines other than the first rendering pipeline in response to receiving the resume token.

US Patent:

40186571, Apr 19, 1977

Filed:

Apr 1, 1976

Appl. No.:

5/672704

Inventors:

William A. Sweeney - Larkspur CA
Milutin Simic - Novato CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C07C 1102
B01D 334

US Classification:

203 38

Abstract:

A process for separating mixtures of close boiling, high-molecular weight alkenes and alkanes which employs phenoxide-catalyzed alkyl displacement.

US Patent:

44404492, Apr 3, 1984

Filed:

Feb 5, 1982

Appl. No.:

6/346185

Inventors:

William A. Sweeney - Larkspur CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

E21C 4110

US Classification:

299 11

Abstract:

An improvement in room-and-pillar mining of underground oil shale deposits in which: spaces between the pillars are filled with a fluid cementitious composition comprising spent oil shale and a binder to form floor-to-ceiling bodies of the composition; the bodies are allowed to harden to form support members for supporting the roof of the mine cavity; and the pillars are thereafter mined from the mine cavity.

US Patent:

45458553, Oct 8, 1985

Filed:

Mar 31, 1983

Appl. No.:

6/480633

Inventors:

William A. Sweeney - Larkspur CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

D21H 308

US Classification:

162158

Abstract:

A stable composition comprising a hydrocarbyl-substituted succinic anhydride and a polyethylene glycol diester emulsifier. There is also disclosed a method for imparting water repellency to surfaces containing groups reactive to anhydrides and a method for the sizing of paper using said composition.

US Patent:

39533387, Apr 27, 1976

Filed:

Sep 25, 1974

Appl. No.:

5/509177

Inventors:

Alan E. Straus - El Cerrito CA
William A. Sweeney - Larkspur CA
Ralph House - El Sobrante CA
Samuel H. Sharman - Kensington CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C09K 702
E21B 4322

US Classification:

252 85C

Abstract:

Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110. degree. C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures thereof are oligomerized under these conditions.

US Patent:

50576364, Oct 15, 1991

Filed:

Jun 22, 1990

Appl. No.:

7/542299

Inventors:

William A. Sweeney - Larkspur CA

Assignee:

Chevron Research and Technology Company - San Francisco CA

International Classification:

C07C 100

US Classification:

585324

Abstract:

Processes are disclosed for recovering n-hexenes from a mixture comprising n-hexenes and at least one branched-chain C. sub. 6 olefin isomer by oligomerizing the branched-chain C. sub. 6 olefin isomers, but not the n-hexenes, and recovering the n-hexenes from the resulting mixture.

US Patent:

44318260, Feb 14, 1984

Filed:

Aug 20, 1982

Appl. No.:

6/410113

Inventors:

William A. Sweeney - Larkspur CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C07D30760

US Classification:

549255

Abstract:

An improved process for the preparation of alkenyl succinic anhydride from maleic anhydride and a mixture of straight chain alpha olefins in the C. sub. 13 to C. sub. 22 range which comprises separating the alpha olefins into a lower boiling fraction and a higher boiling fraction, isomerizing the higher boiling fraction, recombining the two fractions and reacting them with maleic anhydride.

US Patent:

51302870, Jul 14, 1992

Filed:

Jun 22, 1990

Appl. No.:

7/542278

Inventors:

William A. Sweeney - Larkspur CA

Assignee:

Chevron Research and Technology Company - San Francisco CA

International Classification:

B01J 2106

US Classification:

502349

Abstract:

Disclosed is a hydrous zirconium oxide catalyst for the dehydration of alcohols of the general formula ##STR1## to terminal olefins, as well as a method for preparing said catalyst. The catalyst provides high conversion of alcohol to olefin, high dehydration selectivity, and high selectivity for terminal olefin.