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:
Mar. 08, 2011
Filed:
Dec. 26, 2005
Haruyo Fukui, Itami, JP;
Naoya Omori, Itami, JP;
Shinya Imamura, Itami, JP;
Hideki Moriguchi, Itami, JP;
Makoto Setoyama, Itami, JP;
Akihiko Shibata, Itami, JP;
Haruyo Fukui, Itami, JP;
Naoya Omori, Itami, JP;
Shinya Imamura, Itami, JP;
Hideki Moriguchi, Itami, JP;
Makoto Setoyama, Itami, JP;
Akihiko Shibata, Itami, JP;
Sumitomo Electric Hardmetal Corp., Hyogo, JP;
Abstract
A coated cutting tool and its manufacturing method are provided. The coated cutting tool includes a base material and a coating layer formed on a surface of the base material. The coating layer includes an alternate layer having at least one layer of each of an A layer and a B layer stacked one on another alternately. The A layer is made of a nitride containing Al and Cr, and when the total number of metal atoms constituting the A layer is represented as 1, a ratio of the number of Cr atoms is more than 0 and not more than 0.4. The B layer is made of a nitride containing Ti and Al, and when the total number of metal atoms constituting the B layer is represented as 1, a ratio of the number of Al atoms is more than 0 and not more than 0.7.