Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630361 | Process for preparing a vacuum switch tube | — | 1986-12-23 |
| 4537743 | Electrode composition for vacuum switch | Takashi Yamanaka, Yasushi Takeya, Mitsumasa Yorita, Toshiaki Horiuchi, Eizo Naya +2 more | 1985-08-27 |
| 4530815 | Method of producing a contact device for a switch | — | 1985-07-23 |
| 4499009 | Electrode composition for vacuum switch | Takashi Yamanaka, Yasushi Takeya, Mitsumasa Yorita, Toshiaki Horiuchi, Eizo Naya +2 more | 1985-02-12 |
| 4486631 | Contact for vacuum circuit breaker | Eizo Naya, Toshiaki Horiuchi, Yasushi Takeya, Michinosuke Demizu, Mitsuhiro Okumura | 1984-12-04 |
| 4424429 | Contactor for vacuum type circuit interrupter | Takashi Yamanaka, Eizo Naya, Michinosuke Demizu, Mitsuhiro Okumura | 1984-01-03 |