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:
Mar. 26, 2024
Filed:
Jun. 15, 2022
Sumitomo Electric Hardmetal Corp., Itami, JP;
Yuta Suzuki, Itami, JP;
Shinya Imamura, Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cutting tool comprising a base material and a coating, wherein the coating includes a first layer having a multilayer structure in which a first unit layer and a second unit layer are alternately stacked; a thickness of the first unit layer is 2 to 50 nm; a thickness of the second unit layer is 2 to 50 nm; a thickness of the first layer is 1.0 μm or more and 20 μm or less, the first unit layer is composed of TiAlBN, and the second unit layer is composed of TiAlBN, wherein 0.49≤a≤0.70, 0.19≤b≤0.40, 0.10≤c≤0.20, a+b+c=1.00, 0.39≤d≤0.60, 0.29≤e≤0.50, 0.10<f≤0.20, d+e+f=1.00, 0.05≤a-d≤0.20, and 0.05≤e-b≤0.20 are satisfied, and a percentage of the number of atoms of titanium to the total number of atoms of titanium, aluminum and boron is 45% or more in the first layer.