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:
Dec. 18, 1990
Filed:
Oct. 30, 1989
Applicant:
Inventors:
Michael M Kim, Raleigh, NC (US);
Dodd S Carr, Durham, NC (US);
Assignee:
International Lead Zinc Research Organization, Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429245 ; 29-2 ;
Abstract
There is disclosed a method of laser treating lead-containing battery grids such that virtually instantaneous melting and solidfication occurs, thereby yielding an improved fine-grained microstructure even with such normally immiscible (in lead) metals as aluminum. The invention also permits a high aluminum content without the metal vaporization and oxidation, or the coarse grain structure, normally encountered. The fine grain structure of the treated product provides a battery grid having improved weight, electrical, mechanical and corrosion-resistant properties.