Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9330869 | Vacuum valve | — | 2016-05-03 |
| 8754346 | Vacuum valve | Takayuki Itotani | 2014-06-17 |
| 7173208 | Vacuum interrupter | Hiromi Koga, Shinichi Miki | 2007-02-06 |
| 6459567 | Gas-insulated switchgear | Masahiro Arioka, Hiroshi Isoya | 2002-10-01 |