Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657459 | Data input pen-based information processing apparatus | Ryozo Yanagisawa, Kazutoshi Shimada, Eisaku Tatsumi, Atsushi Tanaka, Yuichiro Yoshimura +5 more | 1997-08-12 |
| 5644653 | Information processing apparatus and control method thereof having user character recognition | Shinichi Sunakawa, Kazutoshi Shimada, Eisaku Tatsumi, Katsuhiko Nagasaki | 1997-07-01 |
| 5598150 | Polling communication system | Kazutoshi Shimada, Eisaku Tatsumi, Shinichi Sunakawa, Katsuhiko Nagasaki | 1997-01-28 |