Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6346364 | Optical information recording medium and recording method | Emiko Hamada, Yuji Arai, Takashi Ishiguro | 2002-02-12 |
| 6156482 | Optical information recording medium and recording method | Emiko Hamada, Yuji Arai, Takashi Ishiguro | 2000-12-05 |
| 5407719 | Optical information recording medium and recording method | Emiko Hamada, Yuji Arai, Takashi Ishiguro | 1995-04-18 |
| 5318882 | Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound | Kunihiko Ootaguro, Emiko Hamada, Toru Fujii | 1994-06-07 |
| 5213955 | Optical information recording medium and recording method | Emiko Hamada, Yuji Arai, Takashi Ishiguro | 1993-05-25 |
| 5080946 | Optical information recording medium and recording method | Kunihiko Ootaguro, Emiko Hamada, Toru Fujii | 1992-01-14 |