Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10146056 | Image display apparatus having a diffraction optical element | — | 2018-12-04 |
| 10025009 | Optical device and image display apparatus | Masatoshi Yonekubo, Osamu Yokoyama | 2018-07-17 |