GENEVA, Oct. 19 -- NITTAN CORPORATION (518, Soya, Hadano-shi, Kanagawa2570031), 株式会社NITTAN (神奈川県秦野市曽屋518番地) filed a patent application (PCT/JP2024/014259) for "METHOD FOR MANUFACTURING REFRIGERANT-FILLED HOLLOW POPPET VALVE FOR ENGINE" on Apr 08, 2024. With publication no. WO/2025/215700, the details related to the patent application was published on Oct 16, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Inventor(s): HOMMA Koichi (c/o NIT...