US Patent Issued to VALQUA on Aug. 25 for "Annular seal material and manufacturing method" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,500, issued on Aug. 25, was assigned to VALQUA LTD. (Tokyo).

"Annular seal material and manufacturing method" was invented by Naoki Osumi (Gojo, Japan), Tomomitsu Mochizuki (Gojo, Japan) and Miki Otsuka (Gojo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an annular seal material comprising a core and an outer layer covering a periphery of the core, wherein in the annular seal material, the outer layer has a parting line on each of an outer diameter side and an inner diameter side, and in the annular seal material, a thickness of the outer layer in at least a part of a portion where the parting line is present...