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:
Aug. 12, 2025
Filed:
Jun. 29, 2022
Sumitomo Electric Hardmetal Corp., Itami, JP;
Hironari Moroguchi, Itami, JP;
Yuki Tsutsumiuchi, Itami, JP;
Nozomi Tsukihara, Itami, JP;
Akihiko Ueda, Itami, JP;
Satoru Kukino, Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cutting tool comprises a substrate and a coating film disposed on the substrate, wherein the coating film comprises a first layer and a second layer; the first layer has a hardness Hof 25 GPa or more and 40 GPa or less; the second layer has a hardness Hsatisfying 0.5×H≤H≤0.9×H; and at least one of a ratio I/(I+I+I) of Iof (200) plane to a sum of X-ray diffraction intensity Iof (200) plane, X-ray diffraction intensity Iof (111) plane, and X-ray diffraction intensity Iof (220) plane of the coating film, a ratio I/(I+I+I) of Ito the sum, and a ratio I/(I+I+I) of Ito the sum is 0.45 or more.