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:
Jan. 30, 2024
Sumitomo Electric Hardmetal Corp., Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Yasuki Kido, Itami, JP;
Yoshihiro Kimura, Osaka, JP;
Atsuhiro Yoneda, Itami, JP;
Yuki Tanaka, Itami, JP;
Keiichi Tsuda, Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A cemented carbide consisting of a first hard phase, second hard phases, and a binder phase, wherein the first hard phase is composed of tungsten carbide grains, a D10 and a D90 of grain sizes of the tungsten carbide grains are 0.40 μm and 2.00 μm respectively, the second hard phases are composed of at least one first compound selected from the group consisting of TaNbC, TaNbN, TaNbCN, TiCN, TiNbC, TiNbN, and TiNbCN, the cemented carbide includes 0.30% to 1.60% by volume of the second hard phases, a median of a distance between centroids of two of the second hard phases that are closest is 4 to 15 μm, a coefficient of variation of the distance between centroids is 1.20 to 1.90, the binder phase includes 50% by mass or more of cobalt, and the cemented carbide includes 8.0 to 14.0% by volume of the binder phase.