Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11335633 | Circuit module and power supply chip module | Takanobu Naruse | 2022-05-17 |
| 6346683 | Vacuum interrupter and vacuum switch thereof | Tsutomu Okutomi, 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, Tsutomu Okutomi, Tsuneyo Seki, Makoto Kataoka | 2001-10-16 |
| 6210809 | Contact material | Tsutomu Okutomi, Atsushi Yamamoto, Iwao Ohshima, Tsuneyo Seki, Mitsutaka Homma | 2001-04-03 |
| 6107582 | Vacuum valve | Tsutomu Okutomi, Mitsutaka Homma, Tsuneyo Seki, Atsushi Yamamoto, Hiromichi Somei | 2000-08-22 |
| 6027821 | Contact material for vacuum interrupter and method for producing the same | Atsushi Yamamoto, Tsuneyo Seki, Tsutomu Okutomi | 2000-02-22 |
| 5972068 | Contact material for vacuum valve | Tsuneyo Seki, Atsushi Yamamoto, Tsutomu Okutomi | 1999-10-26 |
| 5882448 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Tsutomu Okutomi, Atsushi Yamamoto | 1999-03-16 |
| 5698008 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Tsutomu Okutomi, Atsushi Yamamoto | 1997-12-16 |