ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,558, issued on June 24, was assigned to The Yokohama Rubber Co. Ltd. (Tokyo).
"Sealant material composition" was invented by Kiyohito Takahashi (Hiratsuka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sealant material composition that can ensure good sealing properties while suppressing a flow of a sealant during travel and that can provide such performance in a well-balanced, compatible manner. As a sealant material composition constituting a sealant layer (10) disposed in an inner surface of a pneumatic tire, a sealant material composition in which a proportion (A) of toluene insoluble occupying the sealant material compositi...