Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550730 | Power converting apparatus for system interconnection | — | 1996-08-27 |
| 5371664 | Line-commutated and self-commutated combined power conversion system | — | 1994-12-06 |
| 5355298 | Conversion apparatus including latch and non-latch type functions | — | 1994-10-11 |
| 4922124 | Arrangement for connecting plural self-commutated voltage type inverters to a utility grid | Shunich Hirose | 1990-05-01 |
| 4890213 | Power converter device having starting circuits and a method for starting the power converter device | — | 1989-12-26 |
| 4878208 | Voltage-phase responsive, inverter disable circuit for system interconnection | Kiyoshi Ogawa, Kihei Nakajima | 1989-10-31 |
| 4675800 | Power converter with a failure detector of a self-turn-off semiconductor element | Kosaku Ichikawa | 1987-06-23 |
| 4667283 | Power converter apparatus including a chopper regulated inverter system | Kouichi Kaneko | 1987-05-19 |
| 4600917 | Gate-turn-off thyristor failure detecting circuit | Shunichi Koike, Yukio Watanabe | 1986-07-15 |
| 4568837 | Gate circuit for gate turn-off thyristor | — | 1986-02-04 |
| 4546423 | Multiple inverters with overcurrent and shoot-through protection | — | 1985-10-08 |
| 4464585 | Gate circuit of gate turn-off thyristor | — | 1984-08-07 |
| 4329652 | Apparatus for synchronization control of a plurality of inverters | Osamu Higa | 1982-05-11 |
| 4301500 | Gate control system of the inverter using gate-turn-off thyristors | Yukinori Tsuruta | 1981-11-17 |
| 4275430 | DV/DT Protection circuit device for gate turn-off thyristor | Yukio Watanabe | 1981-06-23 |
| 4212054 | DC Power source | — | 1980-07-08 |
| 4203047 | Gate circuit of gate turn-off thyristor | — | 1980-05-13 |