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:
Jun. 30, 1998
Filed:
Feb. 08, 1996
Applicant:
Inventors:
Hiroaki Ohashi, Iwaki, JP;
Yoshiki Shigaki, Iwaki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
4234477 ; 4234 / ; 4234494 ; 423460 ; 4234472 ; 429218 ; 429213 ; 252502 ; 252503 ;
Abstract
A battery electrode material having a large charge-discharge capacity and capable of providing a (non-aqueous solvent-type secondary) battery of a high energy density is provided in the form of a carbonaceous material having a microtexture suitable for doping with lithium (ions). Such a carbonaceous material is produced through a process of heating a starting organic material for carbonization including a step of heating the organic material in a halogen gas-containing inert gas atmosphere in a specific temperature range (800.degree.-1400.degree. C.) below the final carbonization temperature.