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:
Apr. 05, 2022
Filed:
Nov. 13, 2018
Applicant:
A.l.m.t. Corp., Tokyo, JP;
Inventors:
Assignee:
A.L.M.T. Corp., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22C 29/08 (2006.01); C01B 32/949 (2017.01); C22C 1/05 (2006.01); B22F 1/00 (2006.01);
U.S. Cl.
CPC ...
C22C 29/08 (2013.01); B22F 1/0011 (2013.01); C01B 32/949 (2017.08); C22C 1/051 (2013.01); B22F 2302/10 (2013.01); C01P 2002/60 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/80 (2013.01);
Abstract
A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 μm and less than or equal to 1.5 μm, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y≤0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).