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:
May. 27, 2025
Filed:
Jun. 01, 2023
Sumitomo Electric Hardmetal Corp., Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cemented carbide comprising a first phase, a second phase and a third phase, wherein: the first phase consists of a plurality of tungsten carbide particles; the second phase consists of cobalt; the cobalt content C5 in the cemented carbide is 3% to 15%; the third phase consists of at least one element selected from the group consisting of titanium, tantalum, niobium, zirconium and tungsten, and at least any of carbon and nitrogen; the Vickers hardness a of the cemented carbide is 12.5 GPa to 14.5 GPa; the cemented carbide includes a first region; the first region has a second region; in the first region, a point Pindicating the Vickers hardness b, which is the maximum value of the Vickers hardness, exists in the second region; and the difference b-a between the Vickers hardness b and the Vickers hardness a is 1.8 GPa or more.