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:
Nov. 16, 1999
Filed:
Jan. 24, 1997
Applicant:
Inventors:
Toshiaki Ueda, Ibaragi-ken, JP;
Eiji Nakamura, Saitama, JP;
Takashi Yamada, Ibaragi-ken, JP;
Takatoshi Oshika, Saitama, JP;
Assignee:
Mitsubishi Materials Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428216 ; 428469 ; 428472 ; 428697 ; 428698 ; 428699 ; 428701 ; 428702 ; 428336 ; 51307 ; 51309 ;
Abstract
A coated carbide alloy cutting member is provided exhibiting excellent resistance against chipping, wherein the cutting member has a cemented carbide substrate and one or more hard coating layers including an aluminum oxide-based layer primarily of aluminum oxide, the hard coating layers having an average thickness of 3 to 20 .mu.m and being formed on the cemented carbide substrate by chemical and/or physical vapor deposition; and wherein the aluminum oxide-based layer contains 0.005 to 0.5 percent by weight of chlorine.