Inventor
OSHIGE HIROSHI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “OSHIGE HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON PISTON RING CO LTD
9 patentsUS6318327B1Nov 20, 2001
Valve system for internal combustion engine
NIPPON PISTON RING CO LTD44 citations92
US5895517AApr 20, 1999
Sintered Fe alloy for valve seat
NIPPON PISTON RING CO LTD35 citations92
US10605374B2Mar 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
US5975039ANov 2, 1999
Process for manufacturing valve seat made of sintered FE alloy and valve seat made of sintered FE alloy
NIPPON PISTON RING CO LTD7 citations72
US10428700B2Oct 1, 2019
Highly wear-resistant valve seat for use in internal combustion engine
NIPPON PISTON RING CO LTD3 citations71
US10273838B2Apr 30, 2019
Valve seat insert for internal combustion engine having excellent wear resistance
NIPPON PISTON RING CO LTD2 citations71
US9803268B2Oct 31, 2017
Iron-base sintered alloy material for valve seat insert and method for manufacturing the same
NIPPON PISTON RING CO LTD2 citations70
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