Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5473528 | Parallel connection of different types of AC power supplies of differing capacities | Akio Hirata | 1995-12-05 |
| 5148043 | Uninterruptible power supply diagnosing remaining battery capacity during normal external power source operation | Akio Hirata, Michiro Yamazaki | 1992-09-15 |
| 4733341 | Plural inverter synchronizer and control apparatus | — | 1988-03-22 |
| 4641042 | Power supply system and a control method thereof | — | 1987-02-03 |
| 4562357 | Uninterruptible power supply and a starting method | — | 1985-12-31 |
| 4340823 | Uninterruptible power supply | — | 1982-07-20 |