Inventor
OGAWA KATSUAKI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “OGAWA KATSUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON PISTON RING CO LTD
13 patentsUS6631907B1Oct 14, 2003
Nitride-plated piston ring for internal combustion engines
NIPPON PISTON RING CO LTD20 citations92
US5531195AJul 2, 1996
Piston ring
NIPPON PISTON RING CO LTD30 citations90
US7493882B2Feb 24, 2009
Combination of a cylinder liner and a piston ring
NIPPON PISTON RING CO LTD13 citations80
US9506138B2Nov 29, 2016
Piston ring
NIPPON PISTON RING CO LTD5 citations72
US5124007AJun 23, 1992
Composite plating bath
NIPPON PISTON RING CO LTD7 citations72
US6494461B1Dec 17, 2002
Sliding member
NIPPON PISTON RING CO LTD7 citations71
US6235415B1May 22, 2001
Sliding member
NIPPON PISTON RING CO LTD11 citations71
US6232003B1May 15, 2001
Sliding member
NIPPON PISTON RING CO LTD11 citations71
US6139984AOct 31, 2000
Sliding member
NIPPON PISTON RING CO LTD9 citations71
US6698763B2Mar 2, 2004
Piston ring
NIPPON PISTON RING CO LTD9 citations65
US6315840B1Nov 13, 2001
Sliding member
NIPPON PISTON RING CO LTD3 citations60
US6296951B1Oct 2, 2001
Laminated chromium plating layers having superior wear resistance and fatigue strength
NIPPON PISTON RING CO LTD5 citations60
US11549408B2Jan 10, 2023
Iron-based sintered alloy valve seat for internal combustion engine
NIPPON PISTON RING CO LTD0 citations47