HN

Hiroto Nakagawa

HI Hitachi: 21 patents #1,645 of 28,497Top 6%
KC Kansai Electric Power Co.: 16 patents #11 of 506Top 3%
TO Toyota: 5 patents #5,641 of 26,838Top 25%
DL Denso Ten Limited: 3 patents #47 of 359Top 15%
Overall (All Time): #134,220 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
4754156 Control apparatus for variable-speed hydraulic power generating system Junichi Shiozaki, Akira Bando, Takao Kuwabara, Eiji Haraguchi 1988-06-28
4743826 Pumping-up generator/motor system and method of operation of the same Akira Bando, Kenichi Ono, Hiroshi Kashiwazaki, Hiroshi Sugisaka, Eiji Haraguchi 1988-05-10
4694189 Control system for variable speed hydraulic turbine generator apparatus Eiji Haraguchi, Akira Bando, Takao Kuwahara, Haruo Nohara, Kenichi Ono 1987-09-15