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Patrick J. Keegan
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Schaumburg, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Electronic ballast deriving auxilliary power from lamp output
Patent number
6,023,132
Issue date
Feb 8, 2000
Energy Savings, Inc.
Kent E. Crouse
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast producing voltage having trapezoidal envelope fo...
Patent number
5,982,113
Issue date
Nov 9, 1999
Energy Savings, Inc.
Kent E. Crouse
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast with filament cut-out
Patent number
5,973,455
Issue date
Oct 26, 1999
Energy Savings, Inc.
Grigoriy Mirskiy
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast that manages switching frequencies for extrinsic...
Patent number
5,936,357
Issue date
Aug 10, 1999
Energy Savings, Inc.
Kent E. Crouse
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Microprocessor controlled electronic ballast
Patent number
5,925,990
Issue date
Jul 20, 1999
Energy Savings, Inc.
Kent E. Crouse
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast with reversely wound filament winding
Patent number
5,789,866
Issue date
Aug 4, 1998
Energy Savings, Inc.
William L. Keith
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR