Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675482 | Accident detection circuit of a voltage-type self-excited power converter | Kenichi Suzuki, Noriko Kawakami | 1997-10-07 |
| 5666275 | Control system for power conversion system | Noriko Kawakami, Hirokazu Suzuki, Ken Suzuki, Koji Sakamoto | 1997-09-09 |
| 5177428 | Inverter control device capable of supressing DC magnetization in three-phase transformer | Syunichi Hirose | 1993-01-05 |
| 5010467 | Control apparatus of DC power coupling system | Yukio Tokiwa, Fumitoshi Ichikawa, Naomi Nakamura, Syunichi Hirose | 1991-04-23 |
| 4862340 | DC power transmission system | — | 1989-08-29 |
| 4797799 | Power converter | Takami Sakai | 1989-01-10 |
| 4598350 | Power converter control apparatus and power converter control method | Takami Sakai | 1986-07-01 |
| 4578743 | Converter control system having stable power transfer in the presence of decreased input AC voltage | Takami Sakai | 1986-03-25 |
| 4543492 | Method and system for terminating operation of an HVDC invertor | Takami Sakai | 1985-09-24 |
| 4494179 | Control device for a converter | Takami Sakai | 1985-01-15 |