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:
Dec. 31, 2002
Filed:
Mar. 10, 1999
Applicant:
Inventors:
Ryohei Ashihara, Neyagawa, JP;
Tetsuya Kobayashi, Sakai, JP;
Keiji Ogino, Katano, JP;
Michiko Inui, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/50 ; H01M 4/42 ; H01M 2/16 ;
U.S. Cl.
CPC ...
H01M 4/50 ; H01M 4/42 ; H01M 2/16 ;
Abstract
There is described in the specification a mercury-free manganese primary dry battery wherein the cathode mixture contains boric acid or an alkali borate at a ratio of 0.04 to 0.4 parts by weight per 100 parts by weight of manganese dioxide as a boron conversion value or wherein the separator contains boric acid or an alkali borate at a ratio of 0.1 to 8.0 parts by weight per 100 parts by weight of a dry solid content in the pasting agent. Such battery has excellent discharge properties under light loading conditions.