Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6795246 | Optical film, polarizer and display device | Seiji Umemoto | 2004-09-21 |
| 6791645 | Optical sheet, polarizer and liquid-crystal display device | Yuuichi Nishikouji | 2004-09-14 |
| 6742921 | Light pipe, plate light source unit and reflection type liquid-crystal display device | Seiji Umemoto, Toshihiko Ariyoshi, Takao Suzuki | 2004-06-01 |
| 6710830 | Optical sheet, polarizer and liquid-crystal display device | Yuuichi Nishikouji | 2004-03-23 |
| 6700637 | Resin liquid-crystal cell substrate, liquid-crystal cells and liquid-crystal display device | Seiji Umemoto | 2004-03-02 |