Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6556459 | Uninterruptible power supply and method of turning off AC switch for uninterruptible power supply | Yoshiaki Okui | 2003-04-29 |
| 6496394 | Uninterruptible power system | Hiroyuki Hanaoka, Masahiko Nagai | 2002-12-17 |