Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10423057 | Projection apparatus, projection system and spectacle-type display apparatus | Masayuki Sasagawa | 2019-09-24 |
| 9678362 | Optical device provided to an eye glass or a helmet having a voltage control unit that switches a voltage cyclically | Yuta DOGEN, Masayuki Sasagawa | 2017-06-13 |
| 9523866 | Optical device provided to an eye glass or a helmet having a frontal transmittance and a peripheral transmittance | Yuta DOGEN, Masayuki Sasagawa | 2016-12-20 |
| 6639642 | Display device having diffraction grating | Toshihiro Suzuki, Hisashi Yamaguchi, Takeshi Gotoh, Tetsuya Hamada, Keiji Hayashi +7 more | 2003-10-28 |
| 6380994 | Fresnel lens and liquid crystal display device | Motohiko Fukuhara | 2002-04-30 |
| 6211932 | Fresnel lens and liquid crystal display device | Motohiko Fukuhara | 2001-04-03 |
| 5959704 | Display device having diffraction grating | Toshihiro Suzuki, Hisashi Yamaguchi, Takeshi Gotoh, Tetsuya Hamada, Keiji Hayashi +7 more | 1999-09-28 |
| 5751387 | Fresnel lens and liquid crystal display device | Motohiko Fukuhara | 1998-05-12 |