Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6735166 | Optical disk with pattern and fabrication method thereof | Reiko Tazawa, Kenji Kiyota, Mitsuhiro Ohtani | 2004-05-11 |
| 6273577 | Light guide plate, surface light source using the light guide plate, and liquid crystal display using the surface light source | Youichiro Goto, Toru Nose, Michiaki Sato, Masahiro Higuchi | 2001-08-14 |
| 6250767 | Light guide plate, surface light source and display using the same | Masahiro Higuchi, Kenkiti Okamoto, Michiaki Sato, Yoshiaki Yamada, Kenji Kiyota | 2001-06-26 |
| 6132652 | Method of producing lightguide plate for surface light source, lightguide plate for surface light source and surface light source using the same | Masahiro Higuchi, Yoshiaki Maeno | 2000-10-17 |
| 5997276 | Optical disc manufacturing apparatus | Kenji Torazawa, Masahiro Higuchi | 1999-12-07 |
| 5999685 | Light guide plate and surface light source using the light guide plate | Youichiro Goto, Michiaki Sato, Yasuko Teragaki, Katsutoshi Hibino, Kenji Torazawa +1 more | 1999-12-07 |