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:
Jun. 16, 2020
Filed:
Nov. 28, 2016
Kyocera Corporation, Kyoto-shi, Kyoto, JP;
Yoshikazu Kodama, Satsumasendai, JP;
Hayato Kubo, Satsumasendai, JP;
Tadashi Katsuma, Satsumasendai, JP;
Kensaku Watanabe, Satsumasendai, JP;
Kenji Kumai, Satsumasendai, JP;
KYOCERA CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
In an aspect of the disclosure, a cutting tool includes a base member and a coating layer located on a surface of the base member. The coating layer includes a lower layer, an upper layer, and an intermediate layer located between the lower layer and the upper layer. The intermediate layer includes a first layer, a second layer, and a third layer. The first layer contains TiCNO(0≤x1<1, 0≤y1<1, 0<z1<1, and x1+y1+z1=1). The second layer contains TiCNO(0≤x2<1, 0≤y2<1, 0<z2<1, and x2+y2+z2=1). The third layer is located between the first layer and the second layer, and contains TiCNO(0≤x3<1, 0≤y3<1, 0≤z3<1, and x3+y3+z3=1). Here, z1>z3 and z2>z3.