Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426475 | Vacuum valve | Kenji Watanabe, Kumi Uchiyama, Kiyoshi Kagenaga, Junichi Sato, Eiji Kaneko +1 more | 2002-07-30 |
| 6376791 | Vacuum valve | Kenji Watanabe, Kumi Uchiyama, Kiyoshi Kagenaga, Junichi Sato, Eiji Kaneko +1 more | 2002-04-23 |
| 5687472 | Method of manufacturing a vacuum interrupter | Hiromichi Somei, Tadahiro Aihara, Tsuneyo Seki, Atsushi Yamamoto | 1997-11-18 |
| 5420384 | Contact material for a vacuum interrupter | Tsutomu Okutomi, Atsushi Yamamoto, Tsuneyo Seki, Mikio Okawa | 1995-05-30 |
| 5149362 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Atsushi Yamamoto, Seishi Chiba, Tsuneyo Seki, Mikio Okawa +3 more | 1992-09-22 |
| 5109145 | Vacuum interrupter contacts and process for producing the same | Hajime Fujita, Seishi Chiba, Tsutomu Okutomi, Kazuo Suzuki, Masami Idehara +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 |