ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,496, issued on Oct. 21, was assigned to AUDI AG (Ingolstadt, Germany).
"Bipolar plate and fuel cell stack" was invented by Oliver Keitsch (Heilbronn, Germany), Sebastian Voigt (Heilbronn, Germany), Fabian Lippl (Mannheim, Germany) and Armin Siebel (Neckarsulm, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bipolar plate comprises a passive plate portion having a plurality of media ports and an active plate portion serving for the distribution of the reactants, wherein the passive plate portion and the active plate portion are coupled to each other by means of at least one spring element. A fuel cell stack comprising such a bipolar plate is...