Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6201951 | Telephone set with a detachable cordless control and display panel | Antonius J. M. Hafkamp, Christian Krexner | 2001-03-13 |
| 5959627 | Method and device for user-presentation of a compilation system | Rudi Blok, Petrus J. Kunst | 1999-09-28 |
| 5960366 | Wrist-watch wireless telephone | — | 1999-09-28 |
| 5541372 | Force activated touch screen measuring deformation of the front panel | Theunis S. Baller, Kofi A. A. Makinwa, R emy Polaert, Antonius J. M. Hafkamp, Gerardus J. K. M. Koolen | 1996-07-30 |
| 5402151 | Data processing system with a touch screen and a digitizing tablet, both integrated in an input device | — | 1995-03-28 |
| 5231381 | Data processing system with a touch screen and a digitizing tablet, both integrated in an input device | — | 1993-07-27 |
| 5146248 | Light valve projection system with improved illumination | Jill F. Goldenberg | 1992-09-08 |
| 5117152 | Cathode ray tube including a magnetic focusing lens | Willem M. Van Alphen | 1992-05-26 |
| 4922240 | Thin film active matrix and addressing circuitry therefor | — | 1990-05-01 |
| 4835602 | Color projection television system with apparatus for correcting misconvergence and misgeometry which calculates coefficients of equations representing deflection correction waveforms | — | 1989-05-30 |
| 4807014 | Three tube color projection television system having multispot blue tube and single-spot red and green tubes | Aart A. Van Gorkum, Leendert Vriens, Johannes H. M. Spruit, Alexander R. H. Van Schoonhoven | 1989-02-21 |
| 4775817 | Faceplate cooling system for display tube | Bernardus J. Brugman | 1988-10-04 |