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:
Mar. 26, 2013
Filed:
Sep. 23, 2011
Applicant:
Yoshihisa Beppu, Tokyo, JP;
Inventor:
Yoshihisa Beppu, Tokyo, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/88 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for producing lithium iron phosphate particles, wherein the process has a step of obtaining a melt containing, as represented by mol % based on oxides, from 1 to 50% of LiO, from 20 to 50% of FeOand from 30 to 60% of PO; a step of cooling and solidifying the melt; a step of pulverizing the solidified product into a desired particle shape; and a step of heating the pulverized product in the air or under oxidizing conditions (0.21<oxygen partial pressure<1.0) at from 350 to 800° C. to precipitate crystals of LiFe(PO)(0<n<3), in this order.