Inventor
OIKAWA AYATO
JP2 patents
Patents
2 patentsUS10605374B2Mar 31, 2020
Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve
NIPPON PISTON RING CO LTD31 citations88
US11549408B2Jan 10, 2023
Iron-based sintered alloy valve seat for internal combustion engine
NIPPON PISTON RING CO LTD0 citations47