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. 15, 2003
Filed:
Aug. 11, 2000
Masuhiro Onishi, Suita, JP;
Hiroshi Fukunaga, Suita, JP;
Masato Isogai, Mito, JP;
Ryo Nagai, Hirakata, JP;
Hitachi Maxell, Ltd., Ibaraki, JP;
Abstract
A nickel metal-hydride cell having a paste type nickel positive electrode containing nickel hydroxide and a cobalt conducting aid selected from the group consisting of metal cobalt and cobalt compounds, a negative electrode which comprises a hydrogen absorbing alloy having a composition of the formula: MmNi M in which Mm is a rare earth element, M is a metal element, 0<x<2, and −0.2<y<0.6, a separator interposed between two electrodes, and an alkaline electrolytic solution, where a ratio of C—H to C—Co(II) is 1.3 or less, wherein C—H is a quantity of electricity of a discharge reserve formed in the negative electrode, and C—Co(II) is a quantity of electricity necessary for reducing cobalt oxide in the positive electrode to cobalt(II) oxide.