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. 03, 2018
Filed:
Mar. 06, 2014
Applicant:
A.l.m.t. Corp., Tokyo, JP;
Inventors:
Assignee:
A.L.M.T. Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 34/36 (2006.01); C01G 41/00 (2006.01); C22B 7/00 (2006.01);
U.S. Cl.
CPC ...
C22B 34/36 (2013.01); C01G 41/00 (2013.01); C22B 7/00 (2013.01); C22B 7/001 (2013.01); Y02P 10/214 (2015.11); Y02P 10/234 (2015.11);
Abstract
A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.