Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369271 | Rotation detector using dual position interference light | — | 1994-11-29 |
| 5359193 | Talbot's interference type optical encoder | Masahiko Igaki | 1994-10-25 |
| 5302821 | Encoder using a birefringent element and a system including the same | Masahiko Igaki, Koh Ishizuka | 1994-04-12 |