Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10042176 | Polarization conversion element, polarization-conversion-element manufacturing method, light-source unit, and optical device | Koji Sasaki, Masatoshi Sasaki, Akio Takada, Katsuhiro Shindo, Toshiaki Sugawara +2 more | 2018-08-07 |
| 9989687 | Wave plate having consistent birefringence properties across the visible spectrum and manufacturing method for same | Akio Takada, Takatoshi Yamada, Masatoshi Sasaki, Kazuyuki Shibuya | 2018-06-05 |
| 9952368 | Polarization conversion element and optical device | Koji Sasaki, Masatoshi Sasaki, Akio Takada | 2018-04-24 |
| 9946001 | Phase difference element having birefringent film containing titanium oxide tantalum oxide | — | 2018-04-17 |