Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498602 | Optical digitizer with function to recognize kinds of pointing instruments | — | 2002-12-24 |
| 6441362 | Stylus for optical digitizer | — | 2002-08-27 |
| 6362468 | Optical unit for detecting object and coordinate input apparatus using same | Azuma Murakami, Yasuhiro Fukuzaki | 2002-03-26 |