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:
Oct. 21, 1997
Filed:
Nov. 20, 1996
Applicant:
Inventors:
Katsunori Nishimura, Hitachi, JP;
Hidetoshi Honbo, Hitachi, JP;
Akihiro Gotoh, Hitachi, JP;
Mamoru Mizumoto, Hitachinaka, JP;
Tatsuo Horiba, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 49 ;
Abstract
A safe and controllable method of treating a secondary battery having at least one component containing alkali metal, comprises the steps of opening the battery casing, and introducing a gas containing at least one of water vapor and alcohol vapor into a closed chamber containing the battery thereby to form alkali metal hydroxide. To control hydrogen concentration, the rate of introduction of water and/or alcohol vapor may be varied. Apparatus for carrying out this method is also described.