ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,565, issued on Aug. 12, was assigned to VALQUA LTD. (Tokyo).
"Metal gasket" was invented by Koji Sato (Gojo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A metal gasket having an annular planar shape with a vertical cross-section having a sideways U-shape has angular portions in an upper surface portion and a lower surface portion, respectively. In the angular portions, inclined faces inclined toward the inner peripheral direction and having a minimum thickness portion with a thickness corresponding to 3-25% of the height of the metal gasket are formed at a boundary between an upper surface of the upper member and an inner peripheral surface...