Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5441848 | Optical recording/reproducing method | Toshiki Aoi, Akio Ogawa | 1995-08-15 |
| 5415914 | Optical recording disk | Hiroyuki Arioka, Kenji Uchiyama, Mamoru Usami, Toshiki Aoi | 1995-05-16 |
| 5391462 | Otical record disk | Hiroyuki Arioka, Koji Yasukawa, Junji Tominaga | 1995-02-21 |
| 5244706 | Optical recording disk | Hideki Hirata, Toshifumi Tanaka, Setsuko Shibuya | 1993-09-14 |
| 5242729 | Optical recording medium | Hideki Hirata, Toshifumi Tanaka, Setsuko Shibuya | 1993-09-07 |