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. 28, 2015
Filed:
Nov. 09, 2010
Robert R. Waterhouse, Scio, OR (US);
Chi Thuong-le LA, Happy Valley, OR (US);
Richard W. Pekala, Corvallis, OR (US);
Robert R. Waterhouse, Scio, OR (US);
Chi Thuong-Le La, Happy Valley, OR (US);
Richard W. Pekala, Corvallis, OR (US);
Amtek Research International LLC, Lebanon, OR (US);
Abstract
A microporous silica-filled polyolefin separator () has a material composition that includes a fraction of cured rubber powder exhibiting low or no porosity. The cured rubber powder is a material derived from one or both of passenger and truck tires. The cured rubber powders exhibit the properties of increasing hydrogen evolution overpotential on the negative lead electrode and of decreasing the effect of antimony deposited on the negative electrode of the lead-acid battery. Incorporation of these cured rubber powders into the formulation of a microporous silica-filled polyethylene separator results in improved electrochemical properties in deep-cycle lead-acid batteries.