KO

Katsuaki Ogawa

NC Nippon Piston Ring Co.: 1 patents #2 of 12Top 20%
Overall (2003): #184,070 of 273,478Top 70%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6631907 Nitride-plated piston ring for internal combustion engines Motonobu Onoda, Kazuo Shimizu 2003-10-14