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:
Sep. 07, 1999
Filed:
Apr. 04, 1996
Applicant:
Inventor:
Aharon Inspektor, Pittsburgh, PA (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428469 ; 428212 ; 428472 ; 428698 ; 428704 ; 51307 ; 51309 ; 407119 ;
Abstract
A coating scheme comprising a boron and nitrogen containing layer that satisfactorily adheres to a substrate is disclosed. The satisfactorily adherent coating scheme comprises a base layer, a first intermediate layer, a second intermediate layer and the boron and nitrogen containing layer. The coating scheme is compatible with tooling for drilling, turning, milling, and/or forming hard, difficult to cut materials. The coating scheme has been applied to cutting inserts comprised of cermets or ceramics using PVD techniques. The boron and nitrogen layer preferably comprises boron nitride and, more preferably, cubic boron nitride.