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:
Apr. 04, 2006
Filed:
Nov. 08, 2001
Applicants:
Hirofumi Umetani, Takatsuki, JP;
Ikumi Ban, Takatsuki, JP;
Yoshihiro Eguchi, Takatsuki, JP;
Inventors:
Assignee:
GS Yuasa Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/60 (2006.01); H01M 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A negative active material is characterized by being prepared by adding a lignin having a unit structure represented by the formula (I) as the main structure to a lead oxide. Since the lignin of the formula (I) is added, the negative active material can be prevented from shrinkage due to charge/discharge.(wherein Ris H, OH, COOH, SOH, SH, CH, COO, SO, RCH, (R)CH, or (R)CH; and Ris at least one member selected from among OH, COOR, SOH, and CHSOH.)