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. 12, 2013
Filed:
Sep. 26, 2007
Daniel W. Krassowski, Columbia Station, OH (US);
Thomas W. Weber, Cleveland, OH (US);
David J. Stuart, North Ridgeville, OH (US);
Jeffery J. Gough, Olmsted Township, OH (US);
Robert A. Mercuri, Seven Hills, OH (US);
Jeremy H. Klug, Union, KY (US);
Daniel W. Krassowski, Columbia Station, OH (US);
Thomas W. Weber, Cleveland, OH (US);
David J. Stuart, North Ridgeville, OH (US);
Jeffery J. Gough, Olmsted Township, OH (US);
Robert A. Mercuri, Seven Hills, OH (US);
Jeremy H. Klug, Union, KY (US);
GrafTech International Holdings Inc., Parma, OH (US);
Abstract
A substrate useful for the formation of, inter alia, a flow field plate for a proton exchange membrane fuel cell, the substrate formed of at least one resin-impregnated sheet of compressed particles of exfoliated graphite comprising two major surfaces, the substrate having an active area with flow field channels thereon, the sheet of compressed particles of exfoliated graphite having a local web thickness in at least about 50% of its active area that is no more than about 55% greater than the minimum web thickness of the active area of the substrate.