ALEXANDRIA, Va., June 17 -- United States Patent no. 12,315,940, issued on May 27, was assigned to CARL FREUDENBERG KG (Weinheim, Germany).
"Gas diffusion layer for fuel cells" was invented by Achim Bock (Weinheim, Germany), Kristof Klein (Weinheim, Germany), Christoph Rakousky (Ober-Ramstadt, Germany) and Hannes Barsch (Heidelberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas diffusion layer for a fuel cell includes: a) a flat, electrically conductive fiber material; and b) a microporous layer on one surface of the fiber material. The gas diffusion layer has, with respect to a base area thereof (in an xy plane), at least one property gradient relating to at least one chemical and/or physical...