Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11573362 | Optical element and projection image display apparatus | Junichi Sugawara, Toshiaki Sugawara | 2023-02-07 |
| 11294114 | Optical element and projection image display apparatus | Junichi Sugawara, Toshiaki Sugawara | 2022-04-05 |
| 10996388 | Manufacturing method of phase difference element, phase difference element, and projection image display device | Junichi Sugawara, Toshiaki Sugawara | 2021-05-04 |