Birch, Stewart, Kolasch & Birch
Non aqueous electrochemical battery with explosion proof arrangement and a method of the production thereof
 In a non-aqueous electrochemical battery, there are formed a plurality of grooves with thinned bottom portion on the bottom of the battery container. The grooves are intersected at least at one point and the bottom of the grooves are made flat so that the explosion-proof arrangement is operable for a desired inner pressure of the battery. 
Hitachi Maxell, Ltd.
H H Y
H01M H01M Y02E
inventional inventional additional
Kenya Kenichi Kiyoshi Kenichi Hirokazu Osamu Tugiyasu Yoshio Hisashi Shigeru
Kazehara Yokoyama Sato Sawada Yoshikawa Watanabe Iwamaru Uetani Urushiwara Ikenari