US Patent Issued to BRIDGESTONE on Feb. 11 for "Vulcanization mold and pneumatic tire manufactured with the mold" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,220,888, issued on Feb. 11, was assigned to BRIDGESTONE Corp. (Tokyo).

"Vulcanization mold and pneumatic tire manufactured with the mold" was invented by Tatsuhiko Hatano (Tokyo), Yasuo Shibata (Tokyo) and Tatsuya Nakai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vulcanization mold is a mold including blades having a distal end side thick portion and pullout is performed smoothly by the mold without causing any failure, and a pneumatic tire. A vulcanization mold in which a blade or has a blade proximal end portion, a blade distal end side thick portion expanded in a thicknesswise direction on the distal end side, and a blade connection porti...