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:
Jun. 12, 2001
Filed:
May. 18, 1998
Masayoshi Maruta, Kamakura, JP;
Masato Onishi, Fujisawa, JP;
Fumihiko Yoshii, Fujisawa, JP;
Tetsushi Kajikawa, Kamakura, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An improved sintered nickel porous plaque substrate for alkaline storage batteries is prepared by a process which includes coating the surface of the sintered nickel powder with a nickel oxyhydroxide coating by anode oxidation in an alkali solution, then attaching a cobalt salt to the nickel oxyhydroxide coating and, while subjecting the cobalt salt to an alkali conversion treatment, through an oxidation-reduction reaction between nickel oxyhydroxide and cobalt hydroxide, converting the nickel oxyhydroxide coating into a nickel hydroxide coating and forming a cobalt oxyhydroxide layer as a uniform film on the outside of the nickel hydroxide coating.