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:
Feb. 24, 1998
Filed:
Feb. 13, 1996
Jun Matumura, Kamakura, JP;
Kuninori Omura, Kamakura, JP;
Chikara Kasai, Fujisawa, JP;
Sadaaki Yokoh, Yokohama, JP;
Hitoshi Mikuriya, Chigasaki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
An electrode for a battery with small dispersion in its discharge capacity and excellent reliability is disclosed. It comprises a sheet of porous metal substrate having three-dimensional communicating spaces, and an active material. The substrate has a higher porosity layer occupying most part of the spaces connected to the first principal face and a lower porosity layer occupying the remaining part of the spaces connected to the second principal face; the lower porosity layer has a sufficiently smaller thickness than the higher porosity layer; and the active material is filled substantially in the higher porosity layer.