Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540861 | Contact material for vacuum circuit interrupter | Mitsuhiro Okumura, Eizo Naya, Mitsumasa Yorita | 1985-09-10 |
| 4537743 | Electrode composition for vacuum switch | Takashi Yamanaka, Mitsumasa Yorita, Toshiaki Horiuchi, Kouichi Inagaki, Eizo Naya +2 more | 1985-08-27 |
| 4499009 | Electrode composition for vacuum switch | Takashi Yamanaka, Mitsumasa Yorita, Toshiaki Horiuchi, Kouichi Inagaki, Eizo Naya +2 more | 1985-02-12 |
| 4486631 | Contact for vacuum circuit breaker | Eizo Naya, Toshiaki Horiuchi, Kouichi Inagaki, Michinosuke Demizu, Mitsuhiro Okumura | 1984-12-04 |
| 4324960 | Windmill-shaped electrode for vacuum circuit interrupter | Shin Aoki | 1982-04-13 |