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:
Jul. 12, 2011
Filed:
Mar. 28, 2008
Chihiro Fujisawa, Osaka, JP;
Atsuya Furuichi, Osaka, JP;
Kazuki Shimozono, Osaka, JP;
Kohei Karasumi, Osaka, JP;
Yasushiro Kudo, Osaka, JP;
Makoto Ochi, Osaka, JP;
Chihiro Fujisawa, Osaka, JP;
Atsuya Furuichi, Osaka, JP;
Kazuki Shimozono, Osaka, JP;
Kohei Karasumi, Osaka, JP;
Yasushiro Kudo, Osaka, JP;
Makoto Ochi, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
A sintered substrate is configured such that pores having a pore size (pore radius) of from 5 μm to 7 μm have a peak volume fraction with respect to the total pore volume of the sintered substrate, and pores having a pore radius of greater than 8.5 μm has a volume fraction of 11% or less with respect to the total pore volume of the sintered substrate. The sintered substrate has a smaller number of large-sized pores than conventional sintered substrates and a more uniform pore size distribution, and therefore shows a sufficient strength even when the porosity is increased. In addition, a cadmium negative electrode employing the sintered substrate shows excellent gas absorption capability and therefore can reduce the internal pressure of the battery during charge.