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:
Feb. 06, 2007
Filed:
Feb. 25, 2003
Kenichi Sugiyama, Fujisawa, JP;
Satoshi Kawamura, Fujisawa, JP;
Shuhei Nakahama, Tokyo, JP;
Hirokazu Takayama, Tokyo, JP;
Matsuho Miyasaka, Fujisawa, JP;
Kenichi Sugiyama, Fujisawa, JP;
Satoshi Kawamura, Fujisawa, JP;
Shuhei Nakahama, Tokyo, JP;
Hirokazu Takayama, Tokyo, JP;
Matsuho Miyasaka, Fujisawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A coating material has a first layer deposited on a base material and a second layer deposited on the first layer. The first layer is made of a Ni-base alloy or a Co-base alloy containing carbon as an unavoidable impurity. The second layer is made of a hard material containing carbide and a metal component. The first layer serves as a barrier for preventing carbon from being diffused from the second layer into the base material to prevent the base material from being carburized.