Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7598666 | Organic electroluminescent device and luminescent material | Yuji Hamada | 2009-10-06 |
| 7479734 | Display including emission layer | Yuji Hamada, Noriyuki Matsusue | 2009-01-20 |
| 7151340 | Display device with reduced deterioration of emission layer | Yuji Hamada, Noriyuki Matsusue | 2006-12-19 |
| 6885053 | Nonvolatile memory and erasing method | — | 2005-04-26 |
| 6847541 | Information storage device, and information storage method and information regeneration method employing the information storage device | — | 2005-01-25 |
| 6387546 | Organic electroluminescent device | Yuji Hamada, Hiroshi Kanno, Tatsuro Usuki | 2002-05-14 |
| 5889751 | Method for optically controlling an optical device and an optical control device utilizing the method | Minoru Kume, Masahiro Irie | 1999-03-30 |
| 5604002 | Optical recording medium and reproducing method therefor | Toshio Harada, Kazuhiko Kuroki, Fumio Tatezono | 1997-02-18 |
| 5592461 | Methods of recording and reproducing information using an optical recording medium | Masahiro Irie | 1997-01-07 |
| 5410531 | Noise reduction in a multiplex recorded optical information system | — | 1995-04-25 |
| 5398223 | Reproducing method and reproducing apparatus for optical recording medium | Masahiro Irie | 1995-03-14 |
| 5316900 | Optical recording medium having a constant birefringent property and an alterable photochromic property | Fumio Tatezono, Koutaro Matsuura, Masahiro Irie | 1994-05-31 |
| 5272689 | Optical head system with transparent contact member | Shigeaki Yamamoto, Fumio Tatezono, Minoru Kume, Kotaro Matsuura | 1993-12-21 |