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:
Feb. 25, 2003
Filed:
Feb. 18, 2000
James Emanuel, Corvallis, OR (US);
James Young, Sunriver, OR (US);
Richard W. Pekala, Corvallis, OR (US);
Amtek Research International LLC, Lebanon, OR (US);
Abstract
A freestanding, microporous polymer sheet ( ) is composed of a polymer matrix binding and electrically conductive matrix. The polymer matrix preferably includes UHMWPE, and the electrically conductive matrix preferably is in powder form. The UHMWPE is of a molecular weight that provides sufficient molecular chain entanglement to form a sheet, with freestanding characteristics. Multiple microporous sheets ( ) can be wound or stacked in a package filled with an electrolyte to function as electrodes in an energy storage device ( ), such as a battery. Metallic layers ( ) can be applied to the microporous sheets to function as current collectors in such devices.