Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7629846 | Source follower circuit and semiconductor apparatus | — | 2009-12-08 |
| 7315199 | Q value correction of filter circuit | — | 2008-01-01 |
| 6917191 | Frequency measurement circuit | Hideki Ishida | 2005-07-12 |
| 6674277 | Frequency measurement circuit | Hideki Ishida | 2004-01-06 |
| 6317476 | Suppressing channel-dependent spurious signals in fractional-N synthesizer | Kimitoshi Niratsuka | 2001-11-13 |
| 6307427 | Filter characteristic regulating apparatus and regulating method therefor | Hiroshi Yamazaki, Kunihiko Gotoh | 2001-10-23 |
| 5818303 | Fractional N-frequency synthesizer and spurious signal cancel circuit | Kimitoshi Niratsuka | 1998-10-06 |
| 4866569 | Gas-insulated switchgear apparatus | Kiyoshi Okumura | 1989-09-12 |
| 4747015 | Gas insulated switching apparatus | Kiyoshi Okumura, Masahira Sakurai | 1988-05-24 |
| 4744002 | Compact-type gas-insulated switchgear apparatus | Haruji Nakano | 1988-05-10 |
| 4458099 | Three-phase combined type gas insulated electrical apparatus | Susumu Takeuti, Minoru Sakaguchi, Takanobu Aoyama | 1984-07-03 |
| 4403125 | Gas-insulated disconnecting switch | Yukinori Yamaoka, Seizo Nakano, Sigetaka Takeuchi, Koji Sasaki | 1983-09-06 |
| 4354220 | Gas insulated power switch-gear apparatus | Seizo Nakano | 1982-10-12 |
| 4291363 | Gas-insulated switchgear apparatus | — | 1981-09-22 |
| 4277746 | Gas-insulated electric apparatus and method of detecting partial discharge therein | Kozin Abe, Norihira Uozumi | 1981-07-07 |
| 4237520 | Gas insulated switch-gear apparatus | Seizo Nakano, Yutaka Kitano | 1980-12-02 |
| 4215256 | Gas-insulated switchgear apparatus | Minoru Sakaguchi, Seizo Nakano, Tuneo Kishi | 1980-07-29 |