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. 13, 2021
Filed:
Sep. 20, 2017
Sumitomo Electric Hardmetal Corp., Itami, JP;
Keizo Tanaka, Itami, JP;
Makoto Setoyama, Itami, JP;
Yutaka Kobayashi, Itami, JP;
Akira Kobayashi, Itami, JP;
Sumitomo Electric Hardmetal Corp., Itami, JP;
Abstract
Provided is a surface-coated cutting tool including a base material and a coating including a super-multilayer-structure layer where A layers and B layers different from the A layers in composition are alternately laminated. The super-multilayer-structure layer includes an X area and a Y area those are alternately repeated. In the X area, A layers having a thickness Aand B layers having a thickness Bare alternately laminated. In the Y area, A layers having a thickness Aand B layers having a thickness Bare alternately laminated. The thickness Ais larger than the thickness A, and the thickness Bis smaller than the thickness B. Each of the A layers and the B layers comprising one or more elements selected from a group consisting of Ti, Al, Cr, Si, Ta, Nb, and W, and one or more elements selected from a group consisting of C and N.