Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |