George K Henry

US Patent:

7183727, Feb 27, 2007

Filed:

Sep 9, 2004

Appl. No.:

10/937889

Inventors:

Bruce R. Ferguson - Anaheim CA, US
George C. Henry - Simi Valley CA, US
Roger Holliday - Santa Ana CA, US

Assignee:

Microsemi Corporation - Irvine CA

International Classification:

H05B 37/02
G09G 3/36

US Classification:

315308, 315149, 315309, 345102

Abstract:

An illumination control circuit allows a user to set a desired brightness level and maintains the desired brightness level over temperature and life of a light source. The illumination control circuit uses a dual feedback loop with both optical and thermal feedbacks. The optical feedback loop controls power to the light source during normal operations. The thermal feedback loop overrides the optical feedback loop when the temperature of the light source becomes excessive.

US Patent:

7391172, Jun 24, 2008

Filed:

Feb 26, 2007

Appl. No.:

11/679046

Inventors:

Bruce R. Ferguson - Anaheim CA, US
George C. Henry - Simi Valley CA, US
Roger Holliday - Santa Ana CA, US

Assignee:

Microsemi Corporation - Irvine CA

International Classification:

H05B 37/02
G09G 3/36

US Classification:

315308, 345102

Abstract:

An illumination control circuit allows a user to set a desired brightness level and maintains the desired brightness level over temperature and life of a light source. The illumination control circuit uses a dual feedback loop with both optical and thermal feedbacks. The optical feedback loop controls power to the light source during normal operations. The thermal feedback loop overrides the optical feedback loop when the temperature of the light source becomes excessive.

US Patent:

49448900, Jul 31, 1990

Filed:

May 23, 1989

Appl. No.:

7/356330

Inventors:

Thomas M. Deeb - Newark DE
George K. Henry - Newark DE
Heather L. Bergmann - Fairfax VA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C10M10738

US Classification:

252 54

Abstract:

A blend of refrigerant with at least one fluorinated hydrocarbon, in which the weight ratio of fluorine-to-carbon is from about 0. 5 to 5, and which has an SUS viscosity at 100. degree. F. of at least 50 and a pour point of less than about -20. degree. C. is disclosed for use in compression refrigeration.

US Patent:

50010042, Mar 19, 1991

Filed:

Apr 2, 1990

Appl. No.:

7/502819

Inventors:

Patrick H. Fitzgerald - Pitman NJ
Nandakumar S. Rao - Hockessin DE
Yashavant V. Vinod - Hockessin DE
George K. Henry - Newark DE
Kenneth S. Prowse - Newark DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

B32B 2708
B32B 3300
D06M 15263

US Classification:

428263

Abstract:

Stain-resistant, polyamide textile substrates treated with compositions comprising hydrolyzed ethylenically unsaturated aromatic/maleic anhydride polymers and processes for their preparation. The treated substrates possess stain resistance that is as good as or better than do previously known stain-resist treated substrates but do not suffer from yellowing to the extent that previously known treated substrates do.