The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2012
Filed:
Jun. 01, 2010
Applicant:
Konking (Michael) Wang, Canton, MI (US);
Inventor:
Konking (Michael) Wang, Canton, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrically isolated high-voltage direct-current electric circuit is monitored. Electrical signals are periodically sampled, and ground isolation indexes are calculated. A trend corresponding to trend elements is characterized. The characterized trend is compared with an expected trend with deviations indicative of potential faults.