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. 06, 2004
Filed:
Feb. 26, 2002
Applicant:
Inventors:
Hirofumi Fukuoka, Annaka, JP;
Satoru Miyawaki, Annaka, JP;
Kenji Oõka, Annaka, JP;
Susumu Ueno, Annaka, JP;
Mikio Aramata, Annaka, JP;
Takeshi Fukuda, Tokyo, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/48 ; C01B 3/3113 ;
U.S. Cl.
CPC ...
H01M 4/48 ; C01B 3/3113 ;
Abstract
A silicon oxide powder represented by the formula: SiOx wherein 1.05≦x≦1.5 and having a BET specific surface area of 5-300 m /g is useful as a negative electrode material to construct a lithium ion secondary cell having a high capacity and improved cycle performance.