Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149362 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Atsushi Yamamoto, Tsuneyo Seki, Mikio Okawa, Mitsutaka Honma +3 more | 1992-09-22 |
| 5109145 | Vacuum interrupter contacts and process for producing the same | Hajime Fujita, Tsutomu Okutomi, Kazuo Suzuki, Masami Idehara, Mitsutaka Honma +1 more | 1992-04-28 |
| 5045281 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Mikio Okawa, Atsushi Yamamoto, Tsuneyo Seki, Yoshinari Satoh +2 more | 1991-09-03 |
| 4830821 | Process of making a contact forming material for a vacuum valve | Tsutomu Okutomi, Mikio Okawa, Tadaaki Sekiguchi, Hiroshi Endo, Tsutomu Yamashita | 1989-05-16 |
| 4777335 | Contact forming material for a vacuum valve | Tsutomu Okutomi, Mikio Okawa, Tadaaki Sekiguchi, Hiroshi Endo, Tsutomu Yamashita | 1988-10-11 |