IH

Iwao Hiraishi

NC Nippon Piston Ring Co.: 1 patents #3 of 10Top 30%
Overall (2018): #387,505 of 503,207Top 80%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10030772 Multi-piece oil ring Atsushi Chiba, Kazuhiro Fujimura, Makoto Kajiwara 2018-07-24