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:
Sep. 23, 2003
Filed:
Oct. 06, 1999
Masahiko Tsukiashi, Takasaki, JP;
Hirohito Teraoka, Takasaki, JP;
Katsuyuki Hata, Takasaki, JP;
Michiko Tajima, Takasaki, JP;
Toshiba Battery Co., Ltd., Tokyo, JP;
Abstract
There is provided a battery separator comprising synthetic resin fibers, wherein hydrophilization treatment, preferably plasma treatment is applied, and a contact angle to pure water indicates a value of 0 to 100 degrees; an alkali secondary battery in which a electrode group having the separator between a positive electrode and a negative electrode is sealed in a battery case together with an alkali electrolyte, in particular, a nickel-metal hydride secondary battery whose positive electrode is a nickel electrode and whose negative electrode is a hydrogen absorbing alloy electrode, wherein active substances of said nickel electrode comprising powders consisting essentially of nickel hydroxides and higher-order cobalt hydroxides formed a surface of a part or whole thereof are employed, thereby providing its superiority in both of self-discharge properties and charge and discharge cycle life performance.