Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10788362 | Light detection device | Kenya Nakai | 2020-09-29 |
| 9472231 | Optical information recording medium and recording/reproducing device | Kenya Nakai | 2016-10-18 |
| 9007881 | Optical head device and optical disc device | Kenya Nakai, Nobuo Takeshita | 2015-04-14 |
| 8971163 | Optical disc device, optical disc and testing method of optical disc | Kenya Nakai | 2015-03-03 |
| 8787135 | Signal processing device, signal processing method, and optical disc apparatus | Kenya Nakai, Nobuo Takeshita | 2014-07-22 |
| 8537653 | Optical information recording medium and drive device | Kenya Nakai, Nobuo Takeshita | 2013-09-17 |
| 8472300 | Optical head device and optical disc device | Masahisa Shinoda, Hironori Nakahara, Kenya Nakai, Nobuo Takeshita | 2013-06-25 |