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:
Jul. 24, 2018
Filed:
Sep. 19, 2014
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami-shi, JP;
Abstract
A surface-coated boron nitride sintered body tool includes a cubic boron nitride sintered body and a coating film formed thereon. The coating film includes an A layer and a C layer. The A layer is formed of TiMaCN(where Ma is one or more of Cr, Nb and W; 0≤xa≤0.7; 0≤ya≤1). The C layer is formed of AlCrMcN (where Mc is one or more of Ti, V and Si; 0.2≤xc≤0.8; 0≤yc≤0.6; 0.2≤xc+yc≤0.8). The A layer is formed on an outermost surface of the coating film or between the outermost surface of the coating film and the C layer. A distance between the outermost surface of the coating film and an upper surface of the C layer is 0.1 μm or more and 1.0 μm or less.