AB

Akira Bando

HI Hitachi: 29 patents #976 of 28,497Top 4%
HH Hitachi Mitsubishi Hydro: 7 patents #1 of 24Top 5%
KC Kansai Electric Power Co.: 7 patents #27 of 506Top 6%
HS Hitachi Information & Control Solutions: 5 patents #6 of 68Top 9%
SK Showa Denko K.K.: 2 patents #639 of 1,736Top 40%
HC Hitachi Engineering & Services Co.: 2 patents #17 of 129Top 15%
TA Tamura: 1 patents #94 of 193Top 50%
TC Toyoda Gosei Co.: 1 patents #1,271 of 2,296Top 60%
DE Denso: 1 patents #6,940 of 11,792Top 60%
ER East Japan Railway: 1 patents #9 of 63Top 15%
HP Hitachi Industrial Products: 1 patents #30 of 86Top 35%
HS Hitachi Industry & Control Solutions: 1 patents #26 of 84Top 35%
SU Sumco: 1 patents #248 of 464Top 55%
Overall (All Time): #91,845 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
5265002 Fault protection for a multiphase bridge power converter Chikara Tanaka, Keiji Saito, Tadao Kawai, Eizo Kita, Keiichi Mitsuhashi +2 more 1993-11-23
5148093 System for controlling AC excited synchronous machine Shigehiro Kayukawa, Toshio Taguchi, Yasuteru Ohno, Junichi Shiozaki, Junko Shiozaki 1992-09-15
5099409 Semiconductor electric power conversion system enabling fault and/or overtemperature protection Chikara Tanaka, Keiji Saito, Tadao Kawai, Eizo Kita, Keiichi Mitsuhashi +2 more 1992-03-24
4980629 AC-excited generator/motor apparatus Osamu Nagura, Shigehiro Kayukawa, Junichi Shiozaki, Akira Momiyama, Hiroto Nakagawa +1 more 1990-12-25
4952852 Power system and synchronizing breakers for a variable speed generator motor system Osamu Nagura, Keiji Saito, Ikuro Miyashita, Hashime Nagai, Hiroto Nakagawa +1 more 1990-08-28
4823018 Control system for variable speed water-wheel generator apparatus Takao Kuwabara, Eiji Haraguchi, Hiroto Nakagawa 1989-04-18
4766360 Induction generator/motor system Eiji Haraguchi, Hiroto Nakagawa, Yoji Tanaka, Kenichi Ono, Hiroshi Kashiwazaki +1 more 1988-08-23
4754156 Control apparatus for variable-speed hydraulic power generating system Junichi Shiozaki, Takao Kuwabara, Eiji Haraguchi, Hiroto Nakagawa 1988-06-28
4743827 Variable speed pumping-up electrical power system Junichi Shiozaki, Takao Kuwabara, Kenichi Ono, Akihiro Sakayori, Ichiro Hitomi +2 more 1988-05-10
4743826 Pumping-up generator/motor system and method of operation of the same Kenichi Ono, Hiroshi Kashiwazaki, Hiroshi Sugisaka, Eiji Haraguchi, Hiroto Nakagawa 1988-05-10
4694189 Control system for variable speed hydraulic turbine generator apparatus Eiji Haraguchi, Hiroto Nakagawa, Takao Kuwahara, Haruo Nohara, Kenichi Ono 1987-09-15