Birch, Stewart, Kolasch and Birch
Leak-proof alkaline cell
 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. 
Hitachi Maxell Limited
Y H H H
Y02E H01M H01M H01M
additional inventional inventional inventional
Osamu
Watanabe