INTERNATIONAL PATENT: KABUSHIKI KAISHA RIKEN, 株式会社リケン FILES APPLICATION FOR "PISTON RING AND METHOD FOR MANUFACTURING SAME, METHOD FOR ASSEMBLING INTERNAL COMBUSTION ENGINE AND METHOD FOR SELECTING PISTON RING"

GENEVA, April 28 -- KABUSHIKI KAISHA RIKEN (8-1, Sanbancho, Chiyoda-ku, Tokyo1028202), 株式会社リケン (東京都千代田区三番町８番地１) filed a patent application (PCT/JP2025/036551) for "PISTON RING AND METHOD FOR MANUFACTURING SAME, METHOD FOR ASSEMBLING INTERNAL COMBUSTION ENGINE, AND METHOD FOR SELECTING PISTON RING" on Oct 16, 2025. With publication no. WO/2026/084037, the details related to the patent application was published on Apr 23, 2026.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (...