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. 30, 2007
Filed:
Jul. 06, 2005
Applicants:
Toshimitsu Kohara, Takasago, JP;
Hiroshi Tamagaki, Takasago, JP;
Inventors:
Toshimitsu Kohara, Takasago, JP;
Hiroshi Tamagaki, Takasago, JP;
Assignee:
Kobe Steel, Ltd., Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multilayer coating according to the present invention comprises an alumina coating formed, directly or through an intermediate layer, on a hard coating composed of a metallic compound formed on the base material, and the Vickers hardness of the hard coating after alumina coating formation being 22 GPa or more. The multilayer coating is excellent in adhesion between a hard coating and an alumina coating and capable of exhibiting excellent wear resistance and heat resistance over a long period.