Issued Patents All Time
Showing 25 most recent of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10956547 | Biometrics authentication system | Kenji Yamamoto, Hideo Sato, Toshio Watanabe, Shinichi Kai, Junji Kajihara +1 more | 2021-03-23 |
| 9161432 | Circuit board | Toshio Watanabe, Tatsuo Maeda, Takuma Nagata | 2015-10-13 |
| 8466475 | Light detecting chip and light detecting device provided with light detecting chip | Masanobu Yamamoto, Shinichi Kai | 2013-06-18 |
| 8463001 | Image pickup apparatus | Kengo Hayasaka, Kenji Yamamoto | 2013-06-11 |
| 8451352 | Image pickup apparatus | Kengo Hayasaka, Kenji Yamamoto, Isao Hirota | 2013-05-28 |
| 8335353 | Biometrics authentication system | Kenji Yamamoto | 2012-12-18 |
| 8324597 | Light detection device | Atsushi Fukumoto, Shinichi Kai, Toshio Watanabe, Yuji Segawa | 2012-12-04 |
| 8306287 | Biometrics authentication system | Junji Kajihara, Kenji Yamamoto, Toshio Watanabe | 2012-11-06 |
| 8305429 | Image pickup apparatus and image pickup method | Junji Kajihara, Kenji Yamamoto | 2012-11-06 |
| 8237843 | Imaging device | Kenji Yamamoto, Kengo Hayasaka, Koichiro Kishima | 2012-08-07 |
| 8180119 | Imaging apparatus and imaging method | Junji Kajihara, Kenji Yamamoto | 2012-05-15 |
| 8170300 | Biometric image pickup apparatus | Kenji Yamamoto | 2012-05-01 |
| 8130310 | Image pickup apparatus | Kenji Yamamoto, Shigeatsu Yoshioka | 2012-03-06 |
| 8111595 | Optical disk recording and playback apparatus and signal detection method utilizing a differential push-pull method and a phase difference method | — | 2012-02-07 |
| 8106994 | Image pickup apparatus having a microlens array | — | 2012-01-31 |
| 7842366 | Multi-layer optical information recording medium | — | 2010-11-30 |
| 7550707 | Biometrics authentication system with authentication based upon multiple layers | Gakuji Hashimoto, Kiyoshi Osato, Toshio Watanabe, Takashi Nakao, Kenji Yamamoto +3 more | 2009-06-23 |
| 7539108 | Optical information reproduction apparatus and optical information reproduction method | Tsutomu Maruyama | 2009-05-26 |
| 7394049 | Optical disk apparatus and pickup unit | Takashi Nakao, Shinichi Kai | 2008-07-01 |
| RE40371 | Optical disc recording/reproduction apparatus and method | Fumisada Maeda, Kenji Yamamoto, Kiyoshi Ohsato, Toshio Watanabe, Akira Suzuki | 2008-06-10 |
| 7301875 | Information recording device and information recording method | Tsutomu Maruyama, Yuichi Sabi, Kiyoshi Osato | 2007-11-27 |
| 7126899 | Optical recording medium processing device and focal point control method thereof | Tsutomu Maruyama | 2006-10-24 |
| 7123551 | Optical device with optical recording medium having transparent heat radiating layer | Yuji Kuroda, Koichiro Kishima, Kiyoshi Osato | 2006-10-17 |
| 7058000 | Information recording disc having an anti-reflection layer and information recording/reproducing apparatus | Koichiro Kishima, Yuji Kuroda, Kiyoshi Osato | 2006-06-06 |
| 7031233 | Optical recording/reproduction device and focal point control method | — | 2006-04-18 |