Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5982343 | Visual display apparatus | Yoichi Iba, Seiichiro Tabata, Takayoshi Togino | 1999-11-09 |
| 5654828 | Optical system and visual display apparatus | Takayoshi Togino | 1997-08-05 |
| 5644436 | Concentric optical system | Takayoshi Togino | 1997-07-01 |
| 5555479 | Reduction projection lens system including refractive and diffractive optical elements | — | 1996-09-10 |