John D. Tompkins

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Troy, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Battery testing dynamic delta voltage measurement
- Patent number 8,502,541
- Issue date Aug 6, 2013
- GM Global Technology Operations LLC
- Robert W. Chalfant
- G01 - MEASURING TESTING
Information Patent Grant
Method of assembling electric storage battery packs
- Patent number 8,353,970
- Issue date Jan 15, 2013
- GM Global Technology Operations LLC
- Jeffrey R. Wells
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Automated system and method for automotive time-based audio verific...
- Patent number 6,950,525
- Issue date Sep 27, 2005
- General Motors Corporation
- Michael R. Harrell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
BATTERY TESTING DYNAMIC DELTA VOLTAGE MEASUREMENT
- Publication number 20120105071
- Publication date May 3, 2012
- GM Global Technology Operations, Inc.
- Robert W. Chalfant
- G01 - MEASURING TESTING
Information Patent Application
Method of Assembling Electric Storage Battery Packs
- Publication number 20110258845
- Publication date Oct 27, 2011
- GM Global Technology Operations, Inc.
- Jeffrey R. Wells
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Automated system and method for automative time-based audio verific...
- Publication number 20030073408
- Publication date Apr 17, 2003
- Michael R. Harrell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE