Issued Patents 2004
Showing 1–1 of 1 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 | Hiroki Umeda, Noriyasu Kuzuhara, Takatoshi Yajima | 2004-11-09 |