US Patent Issued to Rochester Institute of Technology on March 25 for "Leak-free, diffusion-blocking check valve, pump and method" (New York, California Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,952, issued on March 25, was assigned to Rochester Institute of Technology (Rochester, N.Y.).

"Leak-free, diffusion-blocking check valve, pump and method" was invented by David A. Borkholder (Canandaigua, N.Y.) and Farzad Forouzandeh (Pacifica, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A closed leak-free, diffusion-blocking one-way check valve is composed of a substrate having a flow passage through the substrate, the flow passage has a sealing surface between the substrate and a membrane preventing flow through the flow passage. A thin film having internal stress is disposed on the membrane which induces deformation of the membrane bia...