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:
Aug. 04, 2009
Filed:
Mar. 24, 2005
Fumio Kato, Osaka, JP;
Katsuya Sawada, Osaka, JP;
Tadaya Okada, Osaka, JP;
Yasuo Mukai, Osaka, JP;
Shigeto Noya, Osaka, JP;
Fumio Kato, Osaka, JP;
Katsuya Sawada, Osaka, JP;
Tadaya Okada, Osaka, JP;
Yasuo Mukai, Osaka, JP;
Shigeto Noya, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An alkaline battery of the present invention includes a positive electrode material mixture including nickel oxyhydroxide. The nickel oxyhydroxide includes a secondary particle with a crystal structure mainly composed of γ-type at least a portion of the surface layer of the secondary particle, and with a crystal structure mainly composed of β-type in the inner portion of the secondary particle. Based on the present invention, the advantage of the alkaline battery, i.e., excellence in discharge performance under high-load, can be kept and the conventional problem of storage characteristics can be improved.