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:
May. 17, 2005
Filed:
Sep. 05, 2002
Applicants:
Hirofumi Fukuoka, Annaka, JP;
Satoru Miyawaki, Annaka, JP;
Mikio Aramata, Annaka, JP;
Susumu Ueno, Annaka, JP;
Kazuma Momii, Annaka, JP;
Takeshi Fukuda, Tokyo, JP;
Inventors:
Hirofumi Fukuoka, Annaka, JP;
Satoru Miyawaki, Annaka, JP;
Mikio Aramata, Annaka, JP;
Susumu Ueno, Annaka, JP;
Kazuma Momii, Annaka, JP;
Takeshi Fukuda, Tokyo, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B033/113 ;
U.S. Cl.
CPC ...
Abstract
A lithium ion secondary cell having a high capacity, improved first charge/discharge efficiency and improved cycle performance is obtainable using as the negative electrode material a lithium-containing silicon oxide powder having the formula: SiLiOwherein x and y are 0<x<1.0 and 0<y<1.5, with the lithium being fused and partially crystallized.