Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7238931 | Displacement detection apparatus | Kayoko Taniguchi, Eiko Kanbara | 2007-07-03 |
| 5475209 | Displacement measurement apparatus having first and second servo control circuits and a zone decision circuit | — | 1995-12-12 |