Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7911921 | Diffraction optical element, molding die for the optical element and manufacturing method thereof | Masahiro Uekita, Eijiro Koike | 2011-03-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7911921 | Diffraction optical element, molding die for the optical element and manufacturing method thereof | Masahiro Uekita, Eijiro Koike | 2011-03-22 |