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:
Jun. 24, 2003
Filed:
Dec. 07, 2000
Leland M. Gillman, Denver, CO (US);
Ramesh C. Bhardwaj, Walnut, CA (US);
GP Batteries International, Ltd., San Diego, CA (US);
Abstract
The present invention provides a current collector for a battery which comprises a lead or lead alloy substrate and a thin cladding of tin, batteries utilizing such a current collector and methods for manufacturing such batteries. Preferably the tin cladding is composed of substantially pure tin and the concentration of the tin cladding relative to the weight of the current collector (i.e., the combined weight of the substrate and cladding) is less than 4% by weight. The tin cladding forms a noncontinuous layer over the outer surface of the substrate such that there are interspersed regions of lead and tin at the current collector surface. Batteries utilizing such current collectors exhibit marked improvement in performance compared to similar cells composed of tin alloys. In particular, batteries using current collectors of the present design offer superior cycle life and shelf life performance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile