Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11935846 | Electronic device | Yoichiro Kurita, Takanobu Kamakura, Masayuki Sugiura | 2024-03-19 |
| 11676919 | Electronic device | Yoichiro Kurita, Takanobu Kamakura, Masayuki Sugiura | 2023-06-13 |
| 7498635 | Field effect transistor and application device thereof | Mitsuhiko Kitagawa | 2009-03-03 |
| 7479679 | Field effect transistor and application device thereof | Mitsuhiko Kitagawa | 2009-01-20 |
| 7439547 | Micro electro mechanical system apparatus | Mitsuhiko Kitagawa | 2008-10-21 |
| 7385255 | Field effect transistor and application device thereof | Mitsuhiko Kitagawa | 2008-06-10 |
| 7202526 | Field effect transistor and application device thereof | Mitsuhiko Kitagawa | 2007-04-10 |
| 7145169 | Field-effect transistor, semiconductor device, and photo relay | Ryujiro Saso, Mitsuhiko Kitagawa, Takashi Nishimura | 2006-12-05 |
| 7130177 | Drive circuit of switch and relay circuit | Masayuki Sonoda | 2006-10-31 |
| 7102869 | Optical semiconductor relay | Toshimitsu Kato, Masaru Yumura | 2006-09-05 |
| 7030416 | Micro electro mechanical system apparatus | Mitsuhiko Kitagawa | 2006-04-18 |
| 6777746 | Field effect transistor and application device thereof | Mitsuhiko Kitagawa | 2004-08-17 |
| 5963785 | Dielectrically-isolated integrated circuit | Toshimitu Katoh, Hisaya Okumura | 1999-10-05 |
| 5608237 | Bidirectional semiconductor switch | Toshimitu Katoh | 1997-03-04 |
| 5559466 | Semiconductor relay for transmitting high frequency signals | Hisaya Okumura | 1996-09-24 |
| 5514996 | Photo-coupler apparatus | — | 1996-05-07 |
| 5418381 | Photocoupled circuit with photodiode arrays driving a MOSFET switch and current limiting circuit | — | 1995-05-23 |
| 5075758 | Semiconductor device | — | 1991-12-24 |
| 5013926 | Photocoupler apparatus capable of shortening switching time of output contact | — | 1991-05-07 |