Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814914 | Cellulose ester film, its manufacturing method, optical retardation film, optical compensation sheet, elliptic polarizing plate, and image display | Koji Tasaka, Hiroki Umeda, Noriyasu Kuzuhara | 2004-11-09 |
| 6740370 | Optical film and liquid crystal display using the same | Toshiaki Shibue, Makoto Honda, Nobuo Kubo, Noriyasu Kuzuhara, Hiroki Umeda +1 more | 2004-05-25 |