Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6024896 | Contacts material | Tsutomu Okutomi, Atsushi Yamamoto, Tsuneyo Seki | 2000-02-15 |
| 5403543 | Process for manufacturing a contact material for vacuum circuit breakers | Tsutomu Okutomi, Tsuneyo Seki, Atsushi Yamamoto, Mikio Okawa, Yoshiko Majima | 1995-04-04 |
| 5246512 | Contact for a vacuum interrupter | Tsuneyo Seki, Tsutomu Okutomi, Atsushi Yamamoto, Kiyofumi Otobe | 1993-09-21 |
| 5149362 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Atsushi Yamamoto, Seishi Chiba, Tsuneyo Seki, Mikio Okawa +3 more | 1992-09-22 |
| 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, Seishi Chiba, Mikio Okawa, Hiroshi Endo, Tsutomu Yamashita | 1989-05-16 |
| 4777335 | Contact forming material for a vacuum valve | Tsutomu Okutomi, Seishi Chiba, Mikio Okawa, Hiroshi Endo, Tsutomu Yamashita | 1988-10-11 |