Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831244 | Gas-insulated switch | Kenichi Okubo, Tetsu Ishiguro | 2004-12-14 |
| 6815629 | Hydraulic pressure actuating apparatus for circuit breaker | Shinji Seto, Yasuhide Takeda, Daisuke Ebisawa, Masayuki Uchiyama, Atsuji Watanabe | 2004-11-09 |
| 6762387 | Gas-insulated switch | Kenichi Okubo, Tetsu Ishiguro | 2004-07-13 |
| 6717088 | Gas-insulated switch | Kenichi Okubo, Tetsu Ishiguro | 2004-04-06 |
| 6701121 | Color-mixing fixing device in which impact resilience of surface layer of fixing rotary member is 50% or less | Yasuo Nami, Takeshi Menjo, Kazuo Kishino, Jiro Ishizuka | 2004-03-02 |
| 6696657 | Puffer type gas circuit breaker | Makoto Hirose, Tetsu Ishiguro | 2004-02-24 |