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:
Oct. 13, 2009
Filed:
Oct. 12, 2005
Applicants:
Andrea F. Gulla, Malden, MA (US);
Robert J. Allen, South Harwich, MA (US);
Inventors:
Andrea F. Gulla, Malden, MA (US);
Robert J. Allen, South Harwich, MA (US);
Assignee:
BASF Fuel Cell GmbH, Frankfurt Am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 25/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for forming a patterned noble metal coating on a gas diffusion medium substantially free of ionomeric components comprising subjecting an electrically conductive web with a patterned mask overlaid thereto to a first ion beam having an energy not higher than 500 eV, and to a second beam having an energy of at least 500 eV, containing the ions of at least one noble metal and a gas diffusion electrode.