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. 03, 2013
Filed:
Jul. 08, 2009
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Petr Novak, Brugg AG, CH;
Jens Vetter, Wuerenlingen, CH;
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Petr Novak, Brugg AG, CH;
Jens Vetter, Wuerenlingen, CH;
Evonik Degussa GmbH, Essen, DE;
Abstract
A separator for an electrochemical cell, comprising (A) a flexible perforate support, and (B) a porous ceramic material which fills the perforations in the support and is suitable for receiving an ion-conducting electrolyte, wherein the porous ceramic material comprises a first porous layer which is characterized by an average pore size and also at least one second porous layer for contacting with an electrode, the second porous layer having an average pore size which is smaller than the average pore size of the first porous layer.