Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715301 | Wave plate | Homin Ryu, Hajime Kurahashi, Yoshiji Kawamura | 2010-05-11 |
| 7538944 | Polarizing filter, and method for fabricating same | Yoshiji Kawamura, Homin Ryu, Hajime Kurahashi | 2009-05-26 |