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:
Sep. 25, 2007
Filed:
Dec. 23, 2003
Hidesato Saruwatari, Kawasaki, JP;
Haruchika Ishii, Kawasaki, JP;
Takahiro Hirai, Yokohama, JP;
Norio Takami, Yokohama, JP;
Hidesato Saruwatari, Kawasaki, JP;
Haruchika Ishii, Kawasaki, JP;
Takahiro Hirai, Yokohama, JP;
Norio Takami, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
The invention provides a battery including a power generating element container, a positive electrode mixture, and a hydrogen gas permeable sheet provided in an opening of the power generating element container, the hydrogen gas permeable sheet having a water repellence of 2 kPa or more and a He gas permeability at 30° C. in a range of 2×10to 10000×10(cm(STP) cm/sec·cm·cmHg), wherein a distance between the positive electrode mixture and the hydrogen gas permeable sheet gradually decreases toward a side wall of the power generating element container.