ALEXANDRIA, Va., March 24 -- United States Patent no. 12,582,778, issued on March 24, was assigned to KOKOKU INTECH Co. LTD (Tokyo).
"Surface coating layer formation method and gasket manufacturing method" was invented by Akira Koshimoto (Saitama, Japan) and Kazuhiro Takahara (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a surface coating layer formation method and a gasket manufacturing method capable of reducing the falling off of insoluble fine particles into a liquid medicine while preventing leakage of the liquid medicine and maintaining stable slidability. A material of a surface layer has a composition in which silicon-based rubber particles are contained in a sili...