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:
Nov. 30, 2004
Filed:
Nov. 15, 2001
Applicant:
Inventors:
Toshitada Sato, Osaka, JP;
Takayuki Nakamoto, Moriguchi, JP;
Harunari Shimamura, Moriguchi, JP;
Kazuhiro Okamura, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 ; H01M 4/50 ; H01M 4/56 ; H01M 4/42 ; C01B 2/106 ;
U.S. Cl.
CPC ...
H01M 4/58 ; H01M 4/50 ; H01M 4/56 ; H01M 4/42 ; C01B 2/106 ;
Abstract
A method for producing a negative electrode material for a non-aqueous electrolyte secondary battery is disclosed: which includes a step of applying a shearing force to an intermetallic compound under the presence of nitrogen. The intermetallic compound contains element(A) which reacts with nitrogen and forms a nitride, but does not react with lithium, and element(B) which does not react with nitrogen, but reacts with lithium, thereby forming a mixture containing a nitride of element(A) and a substance of element(B).