Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657109 | Method of detecting eye component information for determining sight axis direction and sight axis direction detection apparatus | — | 1997-08-12 |
| 5657110 | Method of detecting eye component information for determining sight axis direction, and sight axis direction detection apparatus | — | 1997-08-12 |
| 5652641 | Method of detecting eye component information for determining sight axis direction, and sight axis direction detection apparatus | — | 1997-07-29 |
| 5598248 | Optical apparatus having visual point detection function | Akihiko Nagano, Yasuo Suda | 1997-01-28 |