Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9196437 | Operation input apparatus and operation input detection apparatus | Kenichi Furukawa, Kensuke Yamada, Takayuki Numakunai, Shintaro Tomitsuka | 2015-11-24 |
| 8479274 | Personal verification device | Kenichi Furukawa, Shinji Hirabayashi, Naoki Tatsumi, Minenori Nagasaka | 2013-07-02 |
| 6115342 | Optical disk recording device and optical disk drive | Tadao Kazuno, Toshio Takeuchi, Masanori Matsunaga | 2000-09-05 |
| 5974010 | Mirror signal arithmetic circuit in an optical disk drive | — | 1999-10-26 |
| 5831959 | Laser control circuit in recordable optical disk drive | — | 1998-11-03 |
| 5742579 | Optical disk recording device and optical disk drive | Tadao Kazuno, Toshio Takeuchi, Masanori Matsunaga | 1998-04-21 |