Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9276792 | Phase-domain digitizer | Rui Quan | 2016-03-01 |
| 6271836 | Method of determining the pen velocity along a graphic tablet, and graphic tablet suitable for carrying out the method | — | 2001-08-07 |
| 6222705 | Rotary magnetic head device for a magnetic recording and reproducing apparatus | Steven Elliot Stupp, Martinus L. J. M. Van De Ven | 2001-04-24 |
| 5952999 | Employing gray codes for pen detection | — | 1999-09-14 |
| 5889237 | Data processing system comprising a graphic tablet and a stylus and stylus for use in such a system | — | 1999-03-30 |
| 5750939 | Data processing system comprising a graphic tablet and a stylus, and stylus for use in such a system | Paul Mateman | 1998-05-12 |
| 5541372 | Force activated touch screen measuring deformation of the front panel | Theunis S. Baller, R emy Polaert, Antonius J. M. Hafkamp, Gerardus J. K. M. Koolen, Arne L. Duwaer | 1996-07-30 |
| 5510813 | Data processing device comprising a touch screen and a force sensor | Theunis S. Baller | 1996-04-23 |
| 5461204 | Segmented-core inductance in stylus for EM-graphical tablet | Jan E. Van Beek, Marcellinus A. M. Grooten | 1995-10-24 |