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:
Jun. 05, 2007
Filed:
Jun. 20, 2003
Siyu YE, Burnaby, CA;
Paul Beattie, Port Moody, CA;
Todd E Wilke, West Vancouver, CA;
Shannon R Hodgson, Vancouver, CA;
Kyoung Bai, Cranbrook, CA;
Michael V Lauritzen, Burnaby, CA;
Siyu Ye, Burnaby, CA;
Paul Beattie, Port Moody, CA;
Todd E Wilke, West Vancouver, CA;
Shannon R Hodgson, Vancouver, CA;
Kyoung Bai, Cranbrook, CA;
Michael V Lauritzen, Burnaby, CA;
Ballard Power Systems Inc., Burnaby, CA;
Abstract
A membrane electrode assembly may be made using a one-sided catalyst coated membrane (CCM) wherein only one catalyst layer, either the anode or the cathode, is coated directly on the ion-exchange membrane. In particular, a one-sided CCM may be used where it may not be practicable to coat both sides of the ion-exchange membrane with catalyst layers such as when PTFE is added to the anode catalyst layer to render it reversal tolerant.