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Robert W. Kruppa
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Manassas, VA, US
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last 30 patents
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Patent Grant
Circuit and method of operation to control in-rush current and main...
Patent number
5,973,419
Issue date
Oct 26, 1999
International Business Machines Corporation
Robert William Kruppa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
DC-to-DC auto switch circuit
Patent number
5,805,439
Issue date
Sep 8, 1998
International Business Machines Corporation
Robert W. Kruppa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor driving apparatus and printer
Patent number
5,087,867
Issue date
Feb 11, 1992
International Business Machines Corporation
Robert W. Kruppa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Logic array structure for depletion mode-FET load circuit technologies
Patent number
4,034,243
Issue date
Jul 5, 1977
International Business Machines Corporation
Robert D. Love
H03 - BASIC ELECTRONIC CIRCUITRY