Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7401962 | Light deflection element and light source apparatus using the same | Tomoyoshi Yamashita | 2008-07-22 |
| 7380969 | Planar light source system and light deflecting device therefor | Tomoyoshi Yamashita, Yasuko Hayashi | 2008-06-03 |
| 7220038 | Light source device and light polarizing element | Tomoyoshi Yamashita | 2007-05-22 |
| 7153017 | Light deflection element and light source apparatus using the same | Tomoyoshi Yamashita | 2006-12-26 |
| 7128456 | Light source device | Tomoyoshi Yamashita | 2006-10-31 |
| 7008099 | Light source device | Tomoyoshi Yamashita | 2006-03-07 |
| 6986599 | Light source device | Tomoyoshi Yamashita | 2006-01-17 |
| 6874902 | Light source device | Tomoyoshi Yamashita | 2005-04-05 |
| 6669350 | Planar light source system and light deflecting device therefor | Tomoyoshi Yamashita, Yasuko Hayashi | 2003-12-30 |
| 6332691 | Surface light source device, and liquid crystal display device, sign display apparatus and traffic sign display apparatus using the surface light source device | Masaharu Oda, Yasuko Hayashi | 2001-12-25 |
| 6312787 | Resin sheet, process and apparatus for producing same, surface light source element and laminate | Yasuko Hayashi, Masaharu Oda | 2001-11-06 |
| 6244719 | Surface light source device and liquid crystal display device sign display apparatus and traffic sign display apparatus using the surface light source device | Masaharu Oda, Yasuko Hayashi | 2001-06-12 |
| 6099135 | Surface light source element and liquid crystal display device, sign device and traffic control sign device using same | Masaharu Oda, Yasuko Hayashi | 2000-08-08 |
| 5863113 | Plane light source unit | Makoto Oe | 1999-01-26 |
| 5711589 | Plane light source unit | Makoto Oe | 1998-01-27 |
| 5550676 | Surface light source element | Makoto Ohe | 1996-08-27 |
| 5193899 | Planar light-source device and illumination apparatus using the same | Makoto Oe | 1993-03-16 |
| 5089944 | Planar light-source device and illumination apparatus using the same | Makoto Oe | 1992-02-18 |