Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9773521 | Information recording device and information recording method | Ryo Imai, Koichi Watanabe | 2017-09-26 |
| 9653108 | Optical recording device, optical recording method, and optical recording medium | Koichi Watanabe, Takao Watanabe | 2017-05-16 |
| 9625389 | Light measuring device and light measuring method | Koichi Watanabe, Masataka Shirai, Kentaro Osawa | 2017-04-18 |
| 9542969 | Optical recording medium and optical information playback method | Takao Watanabe, Koichi Watanabe, Shigeharu Kimura | 2017-01-10 |