William M. Keeffe

Person

Rockport, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Metal halide lamp having CO in gas fill
- Patent number 5,159,229
- Issue date Oct 27, 1992
- GTE Products Corporation
- Edmund M. Passmore
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of determining condensate location in an HID lamp
- Patent number 5,086,276
- Issue date Feb 4, 1992
- GTE Laboratories Incorporated
- Yan M. Li
- G01 - MEASURING TESTING
Information Patent Grant
Metal halide discharge lamp with improved color rendering properties
- Patent number 5,057,743
- Issue date Oct 15, 1991
- GTE Products Corporation
- Zeya K. Krasko
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide lamp
- Patent number 5,021,703
- Issue date Jun 4, 1991
- GTE Products Corporation
- Edmund M. Passmore
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide lamp having reflective coating on the arc tube
- Patent number 5,003,214
- Issue date Mar 26, 1991
- GTE Products Corporation
- James Morris
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube having crystalline press seal penetration suppression mean...
- Patent number 4,916,351
- Issue date Apr 10, 1990
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide discharge lamp with arc tube temperature equalizing means
- Patent number 4,890,030
- Issue date Dec 26, 1989
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Double-enveloped lamp having a shield surrounding a light-source ca...
- Patent number 4,888,517
- Issue date Dec 19, 1989
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal-halide lamp having heat redistribution means
- Patent number 4,859,899
- Issue date Aug 22, 1989
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dimpled arc tube having no internal end pockets and a lamp employin...
- Patent number 4,850,500
- Issue date Jul 25, 1989
- GTE Products Corporation
- Philip J. White
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method to reduce color temperature variation in metal halide arc tubes
- Patent number 4,850,499
- Issue date Jul 25, 1989
- GTE Products Corporation
- Philip J. White
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide discharge lamp for plant growing
- Patent number 4,825,127
- Issue date Apr 25, 1989
- GTE Products Corporation
- Zeya K. Krasko
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc discharge lamp with ultraviolet radiation starting source
- Patent number 4,818,915
- Issue date Apr 4, 1989
- GTE Products Corporation
- Gregory Zaslavsky
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc discharge lamp with electrodeless ultraviolet radiation startin...
- Patent number 4,812,714
- Issue date Mar 14, 1989
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal-halide lamp having heat redistribution means
- Patent number 4,791,334
- Issue date Dec 13, 1988
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-source capsule containment device and lamp employing such device
- Patent number 4,721,876
- Issue date Jan 26, 1988
- GTE Products Corporation
- Philip J. White
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low wattage metal halide lamp
- Patent number 4,709,184
- Issue date Nov 24, 1987
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High intensity discharge device containing oxytrihalides
- Patent number 4,672,267
- Issue date Jun 9, 1987
- GTE Laboratories Incorporated
- Walter P. Lapatovich
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode alignment and capsule design for single-ended low wattage...
- Patent number 4,636,687
- Issue date Jan 13, 1987
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low wattage metal halide discharge lamp electrically biased to redu...
- Patent number 4,625,141
- Issue date Nov 25, 1986
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode alignment and capsule design for single-ended low wattage...
- Patent number 4,620,130
- Issue date Oct 28, 1986
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low wattage metal halide lamp with inverted domed sleeve
- Patent number 4,620,125
- Issue date Oct 28, 1986
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High intensity discharge lamp alkali metal loss reduction means
- Patent number 4,614,890
- Issue date Sep 30, 1986
- GTE Products Corporation
- Vincent D. Meyer
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide arc discharge lamp with means for suppressing convecti...
- Patent number 4,580,989
- Issue date Apr 8, 1986
- GTE Products Corporation
- Timothy Fohl
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Metal halide arc discharge lamp with means for suppressing convecti...
- Patent number 4,499,396
- Issue date Feb 12, 1985
- GTE Products Corporation
- Timothy Fohl
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vertical running, high brightness, low wattage metal halide lamp
- Patent number 4,454,450
- Issue date Jun 12, 1984
- GTE Products Corporation
- George J. English
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Direct current operable arc lamp
- Patent number 4,415,829
- Issue date Nov 15, 1983
- GTE Products Corporation
- Harold L. Rothwell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Projection lamp comprising single ended arc discharge lamp and an i...
- Patent number 4,386,292
- Issue date May 31, 1983
- GTE Products Corporation
- Harold L. Rothwell
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Metal halide arc discharge lamp having shielded electrode
- Patent number 4,383,197
- Issue date May 10, 1983
- GTE Products Corporation
- W. Calvin Gungle
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low wattage metal halide arc discharge lamp
- Patent number 4,321,504
- Issue date Mar 23, 1982
- GTE Products Corporation
- William M. Keeffe
- H01 - BASIC ELECTRIC ELEMENTS

William M. Keeffe

Person

Patents Grantslast 30 patents

Metal halide lamp having CO in gas fill

Method of determining condensate location in an HID lamp

Metal halide discharge lamp with improved color rendering properties

Metal halide lamp

Metal halide lamp having reflective coating on the arc tube

Arc tube having crystalline press seal penetration suppression mean...

Metal halide discharge lamp with arc tube temperature equalizing means

Double-enveloped lamp having a shield surrounding a light-source ca...

Metal-halide lamp having heat redistribution means

Dimpled arc tube having no internal end pockets and a lamp employin...

Method to reduce color temperature variation in metal halide arc tubes

Metal halide discharge lamp for plant growing

Arc discharge lamp with ultraviolet radiation starting source

Arc discharge lamp with electrodeless ultraviolet radiation startin...

Metal-halide lamp having heat redistribution means

Light-source capsule containment device and lamp employing such device

Low wattage metal halide lamp

High intensity discharge device containing oxytrihalides

Electrode alignment and capsule design for single-ended low wattage...

Low wattage metal halide discharge lamp electrically biased to redu...

Electrode alignment and capsule design for single-ended low wattage...

Low wattage metal halide lamp with inverted domed sleeve

High intensity discharge lamp alkali metal loss reduction means

Metal halide arc discharge lamp with means for suppressing convecti...

Metal halide arc discharge lamp with means for suppressing convecti...

Vertical running, high brightness, low wattage metal halide lamp

Direct current operable arc lamp

Projection lamp comprising single ended arc discharge lamp and an i...

Metal halide arc discharge lamp having shielded electrode

Low wattage metal halide arc discharge lamp