Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5107447 | Abnormality diagnosing system and method for a high voltage power apparatus | Jun Ozawa, Youichi Ohshita, Izumi Yamada, Tokio Yamagiwa, Hiroshi Yamada +2 more | 1992-04-21 |
| 4672150 | Conductor supporting apparatus for gas insulated equipment | Tokio Yamagiwa, Toshio Ishikawa | 1987-06-09 |
| 4667061 | Gas insulated apparatus with internal coated insulation layer of high dielectric constant | Toshio Ishikawa, Tokio Yamagiwa, Yuzuru Kamata | 1987-05-19 |
| 4667072 | Gas-insulated circuit breaker | Shigeo Kobayashi, Yoshio Yoshioka | 1987-05-19 |
| 4564721 | Gas-insulated electrical apparatus with electret for captivating conductive particles and method of removing such particles during assembly thereof | Toshio Ishikawa, Tokio Yamagiwa, Yuzuru Kamata | 1986-01-14 |
| 4345471 | Temperature measurement apparatus | Toshio Ishikawa, Jun Ozawa, Yuzuru Kamata, Shigeo Shiono | 1982-08-24 |