US Patent Issued to HITACHI INDUSTRIAL EQUIPMENT SYSTEMS on Jan. 13 for "Sliding material and gas compressor" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,777, issued on Jan. 13, was assigned to HITACHI INDUSTRIAL EQUIPMENT SYSTEMS Co. LTD. (Tokyo).

"Sliding material and gas compressor" was invented by Hayate Saito (Tokyo), Yoshio Kobayashi (Tokyo) and Satoshi Ishii (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sliding material includes a resin, first particles disposed in the resin and composed of an inorganic material, and second particles disposed in the resin and composed of an inorganic material whose Vickers hardness is higher than a Vickers hardness of the first particles. When a value obtained by dividing a Vickers hardness of the second particles by the Vickers hardness of the first...