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:
Jan. 15, 2013
Filed:
Nov. 24, 2009
Ion C. Halalay, Grosse Pointe Park, MI (US);
Eric W. Schneider, Shelby Township, MI (US);
Robert M. Olree, Troy, MI (US);
David R. Staley, Flushing, MI (US);
Ion C. Halalay, Grosse Pointe Park, MI (US);
Eric W. Schneider, Shelby Township, MI (US);
Robert M. Olree, Troy, MI (US);
David R. Staley, Flushing, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
In one exemplary embodiment, the state of engine oil degradation is monitored and determined using the size of viscosity hysteresis during heating-cooling cycles. In another exemplary embodiment, the state of engine oil degradation is monitored and determined using the sign of viscosity hysteresis during heating-cooling cycles. In yet another exemplary embodiment, the state of engine oil degradation is monitored and determined using relative viscosity changes hysteresis during heating-cooling cycles.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile