RT

Ryuhei Tsukahara

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
HP Hitachi Industrial Products: 1 patents #30 of 86Top 35%
Overall (All Time): #1,838,856 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11280223 Bolt fastening structure and turbo-machine using same Youhei Tanno, Takeshi Kazama, Taiji Hashimoto, Tomohiro Naruse 2022-03-22
10989220 Casing and turbo machine Yohei Tanno, Tomohiro Naruse, Takeshi Kazama 2021-04-27