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. 08, 2023
Filed:
Aug. 11, 2020
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A cemented carbide includes a first hard phase and a binder phase. The first hard phase is composed of tungsten carbide grains. The binder phase includes cobalt and nickel as constituent elements. An arbitrary surface or arbitrary cross section of the cemented carbide has: a region Rinterposed between an interface between the tungsten carbide grains and the binder phase and an imaginary line A; a region Rinterposed between the imaginary line A and an imaginary line B; and a region Rother than the region Rand R. When a line analysis is performed in a range including the region Rand the region Radjacent to the region Rwith the region R, a ratio C/Cof a maximum atomic concentration Cat % of cobalt in the region Rand a maximum atomic concentration Cat % of cobalt in the region Ris more than 1.