GENEVA, Sept. 16 -- NIPPON PISTON RING CO., LTD. (5-12-10, Honmachi-Higashi, Chuo-ku, Saitama City, Saitama3388503), 日本ピストンリング株式会社 (埼玉県さいたま市中央区本町東五丁目１２番１０号) filed a patent application (PCT/JP2025/002521) for "CYLINDER AND METHOD FOR FORMING RECESSED PORTION OF INNER WALL SURFACE OF CYLINDER" on Jan 28, 2025. With publication no. WO/2025/187251, the details related to the patent application was published on Sep 11, 2025.
Notably, the patent application was submitted under the International Pat...