Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697150 | Method forming an electric contact in a vacuum circuit breaker | Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Yoshio Koguchi, Yoshimi Hakamata +1 more | 1997-12-16 |
| 5612523 | Vacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereof | Yoshimi Hakamata, Akira Osaka, Katsuhiro Komuro | 1997-03-18 |
| 5594224 | Vacuum circuit interrupter | Yoshimi Hakamata, Masato Kobayashi, Akira Osaka, Katsuhiro Komuro | 1997-01-14 |