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:
Oct. 30, 2018
Filed:
Jun. 06, 2014
Applicant:
Stella Chemifa Corporation, Osaka, JP;
Inventors:
Naoki Yahata, Osaka, JP;
Tetsuo Nishida, Osaka, JP;
Assignee:
STELLA CHEMIFA CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/455 (2006.01); B01J 31/02 (2006.01); H01M 10/0567 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
C01B 25/455 (2013.01); B01J 31/0288 (2013.01); C01P 2006/80 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 2300/0025 (2013.01);
Abstract
Provided is a method for purifying a difluorophosphate, in which a difluorophosphate is purified to a high purity. The method includes a method for purifying a difluorophosphate, comprising bringing hydrogen fluoride into contact with a difluorophosphate containing an impurity and subsequently heating and drying the difluorophosphate, or bringing the hydrogen fluoride into contact with the difluorophosphate containing the impurity while heating and drying the difluorophosphate containing the impurity, thereby removing the impurity.