Inventor

SUWA KIYOSHI

JP2 patents

Patents

2 patents

US10287933B2May 14, 2019

Assembly of internal combustion engine valve and valve seat

NIPPON PISTON RING CO LTD5 citations64

US11549408B2Jan 10, 2023

Iron-based sintered alloy valve seat for internal combustion engine

NIPPON PISTON RING CO LTD0 citations47