HM

Hiroshi Maruyama

RI Riken: 1 patents #23 of 137Top 20%
Overall (2020): #449,710 of 565,922Top 80%
1
Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10670147 Sliding member and piston ring Kazuya Kameda, Yuuichi Ishida, Takuma Sekiya 2020-06-02