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:
Apr. 12, 2011
Filed:
Mar. 17, 2008
Applicants:
David R. Prengaman, Arlington, TX (US);
Frank A. Fleming, Ozark, MO (US);
Inventors:
David R. Prengaman, Arlington, TX (US);
Frank A. Fleming, Ozark, MO (US);
Assignees:
Northstar Battery Company, LLC, Springfield, MO (US);
RSR Technologies, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/68 (2006.01); C22C 11/00 (2006.01); C22C 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead-acid battery grid made from a lead-based alloy containing, in addition to lead, tin at a concentration that is at least about 0.500%, silver at a concentration that is greater than 0.006%, and bismuth at a concentration that is at least about 0.005%, and, if calcium is present in the lead-based alloy, the calcium is at concentration that is no greater than about 0.010%.