KF

Kazuhiro Fujimura

NC Nippon Piston Ring Co.: 1 patents #1 of 14Top 8%
Overall (2021): #384,012 of 548,734Top 70%
1
Patents 2021

Issued Patents 2021

Patent #TitleCo-InventorsDate
11047479 Method for producing piston ring with recess Atsushi Chiba, Naoyuki Akimoto, Iwao Hiraishi 2021-06-29