YS

Yoshio Sumiya

HI Hitachi: 3 patents #10,712 of 28,497Top 40%
TI Tokyo Electric Power Company Holdings, Incorporated: 1 patents #245 of 711Top 35%
Overall (All Time): #1,651,266 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5423377 Condenser for a steam turbine and a method of operating such a condenser Kazuya Iwata, Yoosyun Horibe, Ryoichi Ohkura 1995-06-13
5251690 Apparatus for collecting cleaning bodies for tubular heat exchanger Katsumoto Otake, Yasuo Fujitani, Shigeo Oda, Tokunori Matsushima, Takuya Sasaki +5 more 1993-10-12
4917176 Device for cleaning inner surfaces of heat exchanger tubes Toshimasa Shimada, Katsuhei Tanemura, Yasuo Fujitani, Katsumoto Otake, Shigeo Oda 1990-04-17