Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10068605 | Optical information recording medium having first and second pit row of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2018-09-04 |
| 10043545 | Information recording medium and reproduction device | Hirohisa Yamada, Takayuki Naka, Masaki Yamamoto, Yoshihisa Adachi, Hideharu Tajima | 2018-08-07 |
| 9978415 | Optical information recording medium having first and second pit rows of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2018-05-22 |
| 9978416 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2018-05-22 |