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:
Apr. 26, 2022
Filed:
Dec. 27, 2018
Sumitomo Electric Hardmetal Corp., Itami, JP;
Anongsack Paseuth, Itami, JP;
Yasuki Kido, Itami, JP;
Susumu Okuno, Itami, JP;
Shinya Imamura, Itami, JP;
Sumitomo Electric Hardmetal Corp., Itami, JP;
Abstract
A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a hard coating layer constituted of a domain region and a matrix region, the domain region is a region having a plurality of portions divided and distributed in the matrix region, the domain region has a structure in which a first layer composed of a first AlTicompound and a second layer composed of a second AlTicompound are layered on each other, the matrix region has a structure in which a third layer composed of a third AlTicompound and a fourth layer composed of a fourth AlTicompound are layered on each other, the first AlTi compound and the third AlTi compound have a hexagonal crystal structure, the second AlTi compound and the fourth AlTi compound have a cubic crystal structure.