Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12272393 | Optical recording medium, manufacturing method thereof, recording material for optical recording medium, and sputtering target for optical recording medium | — | 2025-04-08 |
| 11335371 | Reproduction apparatus and reproduction method | Koji Sekiguchi, Toshihiro Horigome, Kenji Yamamoto | 2022-05-17 |
| 10339967 | Reproducing apparatus and reproducing method | Kimihiro Saito, Toshihiro Horigome, Koji Sekiguchi | 2019-07-02 |
| 9919884 | Sheet conveying device and image reading apparatus | Hideaki Utagawa | 2018-03-20 |
| 9758336 | Sheet conveying apparatus | Masahiko Ohta | 2017-09-12 |
| 9667819 | Image reading apparatus having first and second sensors for reading images | — | 2017-05-30 |
| 9580262 | Sheet conveying device | — | 2017-02-28 |
| 9555987 | Sheet conveyer and image reading apparatus | — | 2017-01-31 |
| 9327927 | Sheet conveying device and image reading apparatus | Hideaki Utagawa | 2016-05-03 |
| 9311953 | Recording layer, information recording medium, and target | Yo Ota | 2016-04-12 |
| 8695964 | Sheet conveying device | Masanori Hamaguchi, Takaaki Mukai, Ryoichi Matsushima, Hiroyuki Shingai, Kazutoshi Nakamura | 2014-04-15 |
| 8678377 | Sheet conveying device | — | 2014-03-25 |
| 8564857 | Image reading apparatus | Sakae Ito, Kazutoshi Kuse | 2013-10-22 |
| 8502999 | Image forming apparatus | — | 2013-08-06 |
| 8470429 | Optical recording medium | Shigeki Takagawa | 2013-06-25 |
| 8465822 | Optical recording medium | Shigeki Takagawa | 2013-06-18 |
| 8372501 | Optical information recording medium | — | 2013-02-12 |
| 8216655 | Optical information recording medium | — | 2012-07-10 |
| 6999396 | Initialization method of optical recording medium | Takeshi Yamasaki, Daisuke Ueda, Shigeki Takagawa, Masanobu Yamamoto | 2006-02-14 |
| 6956809 | Multilayer phase-change type optical disc capable of recording and reproducing information at high transfer rate | Koichi Yasuda | 2005-10-18 |
| 6928651 | Initialization method of optical recording medium | Takeshi Yamasaki, Tomomi Yukumoto, Masanobu Yamamoto, Daisuke Ueda | 2005-08-09 |
| 6574180 | Multilayer optical disk and method of initializing the same | Koichi Yasuda, Takeshi Yamasaki, Tomomi Yukumoto | 2003-06-03 |
| 6511788 | Multi-layered optical disc | Koichi Yasuda | 2003-01-28 |
| 6221455 | Multi-layer optical disc and recording/reproducing apparatus | Koichi Yasuda, Yuji Kuroda | 2001-04-24 |