Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7116476 | Fresnel lens, screen, image displaying device, lens forming mold manufacturing method and lens manufacturing method | Hiroshi Suzuki, Kohei Teramoto, Yoshihiro Ashizaki, Shinsuke Sikama, Hiroshi Sekiguchi +1 more | 2006-10-03 |
| 6726859 | Fresnel lens, screen, image display device, lens mold manufacturing method and lens manufacturing method | Hiroshi Suzuki, Kohei Teramoto, Yoshihiro Ashizaki, Shinsuke Sikama, Hiroshi Sekiguchi +1 more | 2004-04-27 |