Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4471184 | Vacuum interrupter | Takamitsu Sano, Yoshiyuki Kashiwagi | 1984-09-11 |
| 4465991 | Operating device for effecting opening and closing operation of a vacuum interrupter with an electromagnet incorporated therein | Shinzo Sakuma, Kazuo Tokuhata, Hiroshi Miyagawa | 1984-08-14 |
| 4450327 | Vacuum interrupter | Junichi Warabi, Yoshiyuki Kashiwagi | 1984-05-22 |
| 4434331 | Vacuum power interrupting device | Shinzo Sakuma, Kazuo Tokuhata, Hiroshi Miyagawa | 1984-02-28 |
| 4429197 | Vacuum power interrupting device | Shinzo Sakuma, Kazuo Tokuhata, Hiroshi Miyagawa | 1984-01-31 |
| 4421961 | Vacuum circuit breaker | Shinzo Sakuma, Kazuo Tokuhata, Hiroshi Miyagawa | 1983-12-20 |
| 4417110 | Vacuum interrupter | Junichi Warabi, Shinzo Sakuma | 1983-11-22 |
| 4293748 | Vacuum circuit interrupter electrodes | Shinzo Sakuma | 1981-10-06 |