ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,366, issued on Jan. 20, was assigned to ProMinent GmbH (Heidelberg, Germany).
"Membrane pump" was invented by Roland Elgetz (Ubstadt-Weiher, Germany) and Jorg Maltry (NuBloch, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulically driven membrane pump for conveying a fluid, including a pumping chamber, a working chamber and a membrane which separates the pumping chamber and the working chamber in a fluid-tight manner, and means for reciprocating the membrane between a suction stroke position and a pressure stroke position, wherein the pumping chamber comprises at least one suction port through which the fluid to be conveyed is sucked...