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. 04, 1985
Filed:
Dec. 01, 1982
Applicant:
Inventor:
Osamu Watanabe, Toyonaka, JP;
Assignee:
Hitachi Maxell Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429174 ; 429185 ;
Abstract
An improved leak-proof alkaline cell comprising positive and negative electrode materials, a member for accommodating said positive electrode materials, a member for covering said negative electrode materials and a gasket provided between the members, characterized in that a sealant comprising asphalt and a compound selected from the group consisting of homopolymer of vinyl acetate, copolymer of vinyl acetate and polyterpene is interposed between the gasket and at least one of said members.