Patents by Inventor Rikio Iida

Rikio Iida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thin type battery
    Patent number: 5958617
    Abstract: To enhance the safety of battery, in a thin type battery, by securely cutting off electric connection when the internal pressure of the battery is raised.An upper valve disc and a lower valve disc are disposed through an electric insulating gasket, a part of the upper valve disc is formed in a recess shape, and a tiny hole and a continuous thin wall part are formed in a part of the lower valve disc, and the bottom of the recess part of the upper valve disc and the portion enclosed by the tiny hole and thin wall part of the lower valve disc are fused, and the structure is constituted so that the strength of the lower valve disc may be greater than the strength of the upper valve disc.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: September 28, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyomi Kozuki, Yoshiko Nishimura, Rikio Iida, Takabumi Fujii, Kazuo Saito, Naoto Kunoike, Toru Takai, Kenjin Masumoto, Yukimasa Niwa