Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6727454 | Gas-insulated switchgear | Mamoru Okabe, Hitoshi Yamada, Isamu Ozawa | 2004-04-27 |
| 6664493 | Gas-insulated switchgear | Hitoshi Yamada, Mamoru Okabe, Isamu Ozawa, Chikara Fujisawa | 2003-12-16 |
| 6509522 | Three-phase integrated gas insulated bus | Mamoru Okabe, Hitoshi Yamada, Isamu Ozawa | 2003-01-21 |