Issued Patents 2004
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827457 | Light pipe, planar light source unit and reflective liquid-crystal display device | Seiji Umemoto | 2004-12-07 |
| 6825895 | Liquid-crystal display apparatus | Yuuki Nakano, Seiji Umemoto, Hideo Abe, Ryoji Kinoshita | 2004-11-30 |
| 6822707 | Optical sheet and display device having the optical sheet | Masaya Adachi, Makoto Tsumura | 2004-11-23 |
| 6795136 | Liquid-crystal display device | Seiji Umemoto | 2004-09-21 |
| 6768529 | Reflection-transmission double type liquid-crystal display device | Seiji Umemoto, Hideo Abe | 2004-07-27 |
| 6751023 | Optical film | Seiji Umemoto | 2004-06-15 |
| 6747801 | Optical film and liquid-crystal display device | Seiji Umemoto, Takao Suzuki | 2004-06-08 |
| 6742921 | Light pipe, plate light source unit and reflection type liquid-crystal display device | Seiji Umemoto, Takao Suzuki, Shuuji Yano | 2004-06-01 |
| 6717635 | Liquid crystal display device with a light guide having random v-shaped dots | Hitoshi Taniguchi, Yasuo Hira, Seiji Umemoto | 2004-04-06 |
| 6704070 | Method for manufacturing a light guide plate | Hitoshi Taniguchi, Yasuo Hira, Seiji Umemoto | 2004-03-09 |
| 6700632 | Illuminator apparatus | Hitoshi Taniguchi, Yasuo Hira, Seiji Umemoto | 2004-03-02 |