Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5318882 | Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound | Emiko Hamada, Yosikazu Takagisi, Toru Fujii | 1994-06-07 |
| 5080946 | Optical information recording medium and recording method | Yosikazu Takagisi, Emiko Hamada, Toru Fujii | 1992-01-14 |