Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9784659 | Microparticle fractionating apparatus and method of fractionating microparticle | Takayuki Itou, Toru Yata, Akiko Tsuji, Takashi Tago | 2017-10-10 |
| 8804120 | Fine particle analyzing apparatus and fine particle analyzing method | Mitsuru Toishi | 2014-08-12 |
| 7274648 | Semiconductor laser drive circuit including a waveform generator voltage-to-current conversion circuit | — | 2007-09-25 |
| 7196978 | Optical head | Atsushi Iida, Toshio Watanabe, Kenji Yamamoto, Gakuji Hashimoto | 2007-03-27 |
| 7050382 | Semiconductor laser drive circuit | — | 2006-05-23 |
| 6977881 | Optical pickup with holding mechanism to effectively prevent comatic aberration | Gakuji Hashimoto, Kenji Yamamoto | 2005-12-20 |
| 6944104 | Method of moving optical pickup, optical pickup, and optical disc apparatus | Kenji Yamamoto, Gakuji Hashimoto | 2005-09-13 |
| 6778570 | Laser driving apparatus and method | — | 2004-08-17 |
| 6590914 | Semiconductor laser drive circuit | Isao Ichimura | 2003-07-08 |