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. 10, 2012
Filed:
Jun. 30, 2008
Leonid C. Lev, West Bloomfield, MI (US);
Michael J. Lukitsch, Marysville, MI (US);
Yang T. Cheng, Troy, MI (US);
Anita M. Weiner, West Bloomfield, MI (US);
Robert F. Paluch, Allenton, MI (US);
Neil E. Anderson, Novi, MI (US);
Leonid C. Lev, West Bloomfield, MI (US);
Michael J. Lukitsch, Marysville, MI (US);
Yang T. Cheng, Troy, MI (US);
Anita M. Weiner, West Bloomfield, MI (US);
Robert F. Paluch, Allenton, MI (US);
Neil E. Anderson, Novi, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A layered coating is disclosed herein. The layered coating includes a chromium layer, an intermediate layer of chromium and nitrogen established on the chromium layer, and an outer layer of chromium and nitrogen established on the intermediate layer. The intermediate layer has a gradually changing composition, wherein the chromium concentration decreases from an area of the intermediate layer adjacent the chromium layer towards a surface of the layered coating.