Issued Patents 2005
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6973021 | Multilayered optical information-recording media and process for manufacture thereof | Akira Nishizawa | 2005-12-06 |
| 6937555 | Information recording medium and reproducing apparatus therefor | — | 2005-08-30 |
| 6934241 | Information recording medium | — | 2005-08-23 |
| 6930977 | Optical information recording medium, and substrate and manufacturing method for the optical information recording medium | Eiji Nakagawa, Hirofumi Nagano | 2005-08-16 |
| 6925050 | Information recording medium | — | 2005-08-02 |
| 6914874 | DISKLIKE RECORDING MEDIA, A METHOD FOR DETECTING FORGED DISKS, AN ANTI-FORGERY SYSTEM FOR PERFORMING A TRUE-FALSE JUDGEMENT BASED ON INFORMATION COLLECTED FROM THE RECORDING MEDIA, AND A MANUFACTURING APPARATUS FOR RECORDING INFORMATION IN THE DISKS | — | 2005-07-05 |
| 6873595 | Information recording medium having parallel grooves with alternating convex-concave sections | Akira Nishizawa | 2005-03-29 |