Russell Doyle Stevens

US Patent:

7153690, Dec 26, 2006

Filed:

Oct 23, 2002

Appl. No.:

10/278449

Inventors:

Russell Stevens - Austin TX, US
Thomas Kloffenstein - Morgan Hill CA, US
Todd Aycock - Austin TX, US
Joseph W. Evans - Oak Park IL, US
Richard Bhella - Gilbert AZ, US

Assignee:

Advanced Technology Materials, Inc. - Danbury CT

International Classification:

G01N 35/02
G01N 31/16
G01N 27/02
G01N 21/00

US Classification:

436 51, 436 50, 422 62, 422 75, 422 76, 422 77

Abstract:

A multicomponent fluid composition monitoring and compositional control system, in which a component analysis is effected by titration or other analytical procedure, for one or more components of interest, and a computational means then is employed to determine and responsively adjust the relative amount or proportion of the one or more components in the multicomponent fluid composition, to maintain a predetermined compositional character of the multicomponent fluid composition. The system is usefully employed in semiconductor manufacturing photoresist and post-etch residue removal, in which the cleaning medium is a semi-aqueous solvent composition, and water is the monitored and responsively adjusted component.

US Patent:

7214537, May 8, 2007

Filed:

Oct 4, 2002

Appl. No.:

10/264408

Inventors:

Russell Stevens - Austin TX, US
Thomas Kloffenstein - Morgan Hill CA, US
Todd Aycock - Austin TX, US
Joseph W. Evans - Oak Park IL, US

Assignee:

Advanced Technology Materials, Inc. - Danbury CT

International Classification:

G01N 33/18
G01N 31/16

US Classification:

436 42, 436 51, 436 52, 422 62, 422 75

Abstract:

A multicomponent fluid composition monitoring and compositional control system, in which a component analysis is effected by titration or other analytical procedure, for one or more components of interest, and a computational means then is employed to determine and responsively adjust the relative amount or proportion of the one or more components in the multicomponent fluid composition, to maintain a predetermined compositional character of the multicomponent fluid composition. The system is usefully employed in semiconductor manufacturing photoresist and post-etch residue removal, in which the cleaning medium is a semi-aqueous solvent composition, and water is the monitored and responsively adjusted component.

US Patent:

8482894, Jul 9, 2013

Filed:

Mar 21, 2011

Appl. No.:

13/053084

Inventors:

Pablito B. Yra - Union City CA, US
Pierre Irissou - Sunnyvale CA, US
Mathieu Sureau - San Francisco CA, US
David Truong - San Jose CA, US
Russell Stevens - San Jose CA, US

Assignee:

Space Systems/Loral, LLC - Palo Alto CA

International Classification:

H02H 9/08

US Classification:

361 939

Abstract:

A load current is limited to a safe level with a current protection logic circuit within a first selected interval after detection of a fault condition. The current protection logic circuit returns the load current to a normal level within a second selected interval after correction of the fault condition, wherein said safe level is less than one half of the normal level. The current protection logic circuit is a feature of a high side driver comprising at least two source drivers, each source driver being configured to switch an electrical load to a common power supply, and comprising a respective current protection logic circuit.

US Patent:

20060211129, Sep 21, 2006

Filed:

May 22, 2006

Appl. No.:

11/438453

Inventors:

Russell Stevens - Austin TX, US
Thomas Kloffenstein - Morgan Hill CA, US
Todd Aycock - Austin TX, US
Joseph Evans - Oak Park IL, US

International Classification:

G01N 24/00

US Classification:

436173000

Abstract:

A multicomponent fluid composition monitoring and compositional control system, in which a component analysis is effected by titration or other analytical procedure, for one or more components of interest, and a computational means then is employed to determine and responsively adjust the relative amount or proportion of the one or more components in the multicomponent fluid composition, to maintain a predetermined compositional character of the multicomponent fluid composition. The system is usefully employed in semiconductor manufacturing photoresist and post-etch residue removal, in which the cleaning medium is a semi-aqueous solvent composition, and water is the monitored and responsively adjusted component.

US Patent:

45317119, Jul 30, 1985

Filed:

Jun 30, 1982

Appl. No.:

6/393539

Inventors:

Paul D. Bunch - Houston TX
Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 4104

US Classification:

251214

Abstract:

A valve having a valve member with a stem connected to an actuator and an improved stem seal for sealing between the stem and the interior of the body on a bonnet attached thereto. The improved stem sealing assembly includes a U-shaped resilient seal ring with means in its open end to ensure sealing engagement of the multiple internal and external sealing lips with the stem and body sealing surfaces and support rings positioned in grooves between the sealing lips and anti-extrusion means engaging the closed end of the seal ring to prevent extrusion of the seal ring. A modified sealing assembly also includes a back-up seal and anti-extrusion means therefor.

US Patent:

46291610, Dec 16, 1986

Filed:

May 2, 1985

Appl. No.:

6/729622

Inventors:

Taylor L. Jones - Houston TX
Paul D. Bunch - Houston TX
Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 146

US Classification:

251328

Abstract:

A gate valve having a body with a valve chamber therein, an inlet passage through the body into the valve chamber, an outlet passage through the body into the valve chamber, a gate positioned within the chamber and having an opening therethrough, a body sealing surface surrounding the openings of each of the inlet and outlet passages within the passages within the chamber, a seat ring positioned between the gate and each of the body sealing surfaces, means for urging the seat rings against their body sealing surfaces, resilient seals between each seat ring and its body sealing surface near the inner and outer diameter of each ring, means for sealing between the gate and the seal rings, and means for moving said gate in said chamber to close and open flow through said valve. The means urging the seat rings against their body sealing surfaces in one form includes wedges positioned at the side of the gate engaged between the two seat rings and in another form includes springs positioned at the sides of the gate engaged between the two seat rings.

US Patent:

44899165, Dec 25, 1984

Filed:

Apr 7, 1982

Appl. No.:

6/366367

Inventors:

Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 4104

US Classification:

251214

Abstract:

An improved valve having a body with an inlet, an outlet, a valve chamber, a valve seat, a valve member movable in the valve chamber toward and away from said valve seat, a stem connected to said valve member a bonnet connected to and forming a part of the body a part of the body in the stem extending therethrough and an improved sealing assembly for sealing around the stem including a seal ring of extrudable material and means providing a space into which said seal ring extrudes to form a sealing lip extending toward the pressure and responsive to pressure exerted on the sealing assembly. Also the improved sealing assembly includes mating tapered wedging and seal rings having a small angle mating taper wedge the rings into sealing engagement with the walls against which they are to seal.