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. 17, 1999
Filed:
Aug. 29, 1997
Applicant:
Inventors:
Hisao Takehara, Chuo-Ku, JP;
Yoshihiro Nakayama, Chuo-Ku, JP;
Ryoichi Shimizugawa, Takaoka, JP;
Tsutomu Kishikawa, Takaoka, JP;
Takumi Murai, Takaoka, JP;
Fumiya Takahashi, Takaoka, JP;
Koh Takahashi, Tsukuba, JP;
Assignee:
Japan Metals & Chemicals Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
205 51 ; 423605 ; 429224 ;
Abstract
Electrolytic manganese dioxide having a BET specific surface area of less than 30 m.sup.2 /g and a suspensiveness of less than 50 mg/liter is used for alkaline manganese batteries and manganese batteries to make them excellent both in initial performance and storability. The electrolytic manganese dioxide may be made by a suspension method or a clarification method.