YW

Yoshinari Watanabe

RI Riken: 2 patents #375 of 1,824Top 25%
Overall (All Time): #1,946,160 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9885417 Piston ring Kouhei Sugimoto, Toshikatsu Hayashi, Ryou Obara 2018-02-06
9709169 Piston ring Toshikatsu Hayashi, Kouhei Sugimoto, Hayato Sasaki 2017-07-18