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. 10, 2001
Filed:
Mar. 23, 1998
Applicant:
Inventors:
Hideki Nagata, Yokohama, JP;
Masayoshi Matsumoto, Akita, JP;
Kenji Ichiya, Akita, JP;
Kazuya Saito, Honjo, JP;
Assignee:
Dowa Mining Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/42 ;
U.S. Cl.
CPC ...
H01M 4/42 ;
Abstract
Metallic zinc melted to a purity of 99.995% or higher was treated with selected elements that were dissolved in amounts within specified ranges and the resulting melts were atomized to prepare zinc alloy powders of 35-200 mesh; the powders were gelled with a gelling agent (sodium polyacrylate) and an electrolyte; bismuth compounds having specified powder characteristics (either an average particle size of no more than 10 &mgr;m or a specific surface area of at least 1 m,/g or both characteristics) were added in specified amounts to the gels, thereby producing gels of anode.