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. 29, 2025
Filed:
Dec. 09, 2020
Sumitomo Electric Hardmetal Corp., Itami, JP;
Kenta Sano, Itami, JP;
Satoru Kukino, Itami, JP;
Michiko Matsukawa, Itami, JP;
Nozomi Tsukihara, Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cutting tool includes a substrate; and a coating film, wherein the coating film includes a multilayer structure layer having first unit layer(s) and second unit layer(s), the first unit layer(s) and the second unit layer(s) are alternately layered, under a condition X-ray diffraction intensities of different planes in the multilayer structure layer are respectively represented by I, I, and I, the following formula 0.6≤I/{I+I+I}, the first unit layer(s) has a NaCl-like structure in which an interplanar spacing din a c-axis direction is larger than an interplanar spacing din an a-axis direction, the second unit layer(s) has a NaCl-like structure in which an interplanar spacing din the c-axis direction is smaller than an interplanar spacing din the a-axis direction, and the following formulas are satisfied as well 1≤d/d≤1.02, 1.01≤d/d≤1.05, and d/d<d/d.