MD

Munehiko Doi

NC Nippon Piston Ring Co.: 1 patents #120 of 208Top 60%
Overall (All Time): #3,579,338 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6220214 Cylinder liner formed with cross-hatching grooves Genshin Kojima, Fujio Anzai 2001-04-24