Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664493 | Gas-insulated switchgear | Hitoshi Yamada, Mamoru Okabe, Toshihisa Miyamoto, Chikara Fujisawa | 2003-12-16 |
| 6509522 | Three-phase integrated gas insulated bus | Mamoru Okabe, Hitoshi Yamada, Toshihisa Miyamoto | 2003-01-21 |