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. 21, 2000
Filed:
Aug. 04, 1998
Applicant:
Inventors:
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
4292318 ; 42923195 ;
Abstract
A carbonaceous negative electrode material for nonaqueous secondary batteries having (i) not less than 2.times.10.sup.-4 cc/g of pores having a diameter smaller than 8 .ANG. and (ii) not more than 15.times.10.sup.-4 cc/g of pores having a diameter of 8 to 18 .ANG.. The material exhibits a high capacity and a high efficiency.