Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6346683 | Vacuum interrupter and vacuum switch thereof | Takashi Kusano, Iwao Ohshima, Mitsutaka Homma, Atsushi Yamamoto, Takanobu Nishimura | 2002-02-12 |
| 6303076 | Contact material for contacts for vacuum interrupter and method of manufacturing the contact | Atsushi Yamamoto, Takashi Kusano, Tsuneyo Seki, Makoto Kataoka | 2001-10-16 |
| 6210809 | Contact material | Atsushi Yamamoto, Iwao Ohshima, Tsuneyo Seki, Mitsutaka Homma, Takashi Kusano | 2001-04-03 |
| 6107582 | Vacuum valve | Mitsutaka Homma, Tsuneyo Seki, Atsushi Yamamoto, Takashi Kusano, Hiromichi Somei | 2000-08-22 |
| 6080952 | Electrode arrangement of vacuum circuit breaker with magnetic member for longitudinal magnetization | Tsuneyo Seki, Iwao Ohshima, Mitsutaka Homma, Hiromichi Somei, Kumi Uchiyama +2 more | 2000-06-27 |
| 6027821 | Contact material for vacuum interrupter and method for producing the same | Atsushi Yamamoto, Tsuneyo Seki, Takashi Kusano | 2000-02-22 |
| 6024896 | Contacts material | Atsushi Yamamoto, Tsuneyo Seki, Tadaaki Sekiguchi | 2000-02-15 |
| 5972068 | Contact material for vacuum valve | Tsuneyo Seki, Atsushi Yamamoto, Takashi Kusano | 1999-10-26 |
| 5882448 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Atsushi Yamamoto, Takashi Kusano | 1999-03-16 |
| 5726407 | Contact electrode for vacuum interrupter | Tsuneyo Seki, Atsushi Yamamoto | 1998-03-10 |
| 5698008 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Atsushi Yamamoto, Takashi Kusano | 1997-12-16 |
| 5500499 | Contacts material for vacuum valve | Tsuneyo Seki, Atsushi Yamamoto | 1996-03-19 |
| 5420384 | Contact material for a vacuum interrupter | Atsushi Yamamoto, Tsuneyo Seki, Mikio Okawa, Mitsutaka Honma | 1995-05-30 |
| 5409519 | Contact material for vacuum valve | Tsuneyo Seki, Atsushi Yamamoto | 1995-04-25 |
| 5403543 | Process for manufacturing a contact material for vacuum circuit breakers | Tsuneyo Seki, Atsushi Yamamoto, Mikio Okawa, Tadaaki Sekiguchi, Yoshiko Majima | 1995-04-04 |
| 5354352 | Contact material for vacuum circuit breakers | Tsuneyo Seki, Atsushi Yamamoto, Mikio Okawa, Kiyofumi Otobe | 1994-10-11 |
| 5294761 | Vacuum interrupter | Tsuneyo Seki, Hideo Suzuki, Shinzo Sugai, Kazuya Tujimoto, Hiroshi Watanabe +3 more | 1994-03-15 |
| 5246512 | Contact for a vacuum interrupter | Tsuneyo Seki, Atsushi Yamamoto, Kiyofumi Otobe, Tadaaki Sekiguchi | 1993-09-21 |
| 5149362 | Contact forming material for a vacuum interrupter | Atsushi Yamamoto, Seishi Chiba, Tsuneyo Seki, Mikio Okawa, Mitsutaka Honma +3 more | 1992-09-22 |
| 5109145 | Vacuum interrupter contacts and process for producing the same | Hajime Fujita, Seishi Chiba, Kazuo Suzuki, Masami Idehara, Mitsutaka Honma +1 more | 1992-04-28 |
| 5056702 | Method of manufacturing a semiconductor device | Masako Nakahashi, Makoto Shirokane, Hiromitsu Takeda, Tatsuo Yamazaki, Shozi Niwa +4 more | 1991-10-15 |
| 5045281 | Contact forming material for a vacuum interrupter | Mikio Okawa, Atsushi Yamamoto, Tsuneyo Seki, Yoshinari Satoh, Mitsutaka Honma +2 more | 1991-09-03 |
| 4917642 | Air-tight ceramic container | Masako Nakahashi, Makoto Shirokane, Hiromitsu Takeda, Tatsuo Yamazaki, Shozi Niwa +2 more | 1990-04-17 |
| 4830821 | Process of making a contact forming material for a vacuum valve | Seishi Chiba, Mikio Okawa, Tadaaki Sekiguchi, Hiroshi Endo, Tsutomu Yamashita | 1989-05-16 |
| 4777335 | Contact forming material for a vacuum valve | Seishi Chiba, Mikio Okawa, Tadaaki Sekiguchi, Hiroshi Endo, Tsutomu Yamashita | 1988-10-11 |