Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751513 | Method and device for recording an optical information carrier | — | 2004-06-15 |
| 6295270 | Optical record carrier with grooves having wobbles with phases depending on position information pits at predetermined positions | Gijsbert J. Van Den Enden, Johannes J. L. M. Van Vlerken, Ronald R. Drenten | 2001-09-25 |
| 6269071 | Optical record carrier | Gijsbert J. Van Den Enden, Johannes J. L. M. Van Vlerken, Ronald R. Drenten | 2001-07-31 |
| 6243339 | Method and device for writing optical record carriers | Jeroen Jan Lambertus Horikx, Johan P. W. B. Duchateau | 2001-06-05 |
| 6205102 | Method and device for recording an optical information carrier | — | 2001-03-20 |
| 6167012 | Information carrier, reading/writing device and reading device for writing and/or reading information blocks | Gijsbert J. Van Den Enden | 2000-12-26 |
| 6115340 | Modifying the recording process to extend the life of a rewritable information carrier | Gijsbert J. Van Den Enden, Johan P. W. B. Duchateau, Johannes H. G. Jaegers | 2000-09-05 |
| 6091681 | Information carrier, reading/writing device and reading device for writing and/or reading information blocks | Gijsbert J. Van Den Enden | 2000-07-18 |
| 6021109 | Optical recording medium | Johan P. W. B. Duchateau | 2000-02-01 |
| 5978351 | Optical recording medium with recording control information | Winslow Mimnagh | 1999-11-02 |
| 5617399 | Write intensity calibration of a recording beam by reading a test pattern written on a buffer sector of a record carrier | Johannus Bakx | 1997-04-01 |
| 5471457 | Methods and devices for recording one or more signals which have been encoded by on error detection and correction algorithm on a record carrier by means of an optimal recording intensity | Johannes Leopoldus Bakx, Hindrik Veldhuis | 1995-11-28 |
| RE34131 | Display tube having improved brightness distribution | Leendert Vriens, John A. Clarke | 1992-11-24 |
| 5061993 | Projection television display device | Leendert Vriens, Johannes C. N. Rijpers | 1991-10-29 |
| 4807014 | Three tube color projection television system having multispot blue tube and single-spot red and green tubes | Aart A. Van Gorkum, Leendert Vriens, Arne L. Duwaer, Alexander R. H. Van Schoonhoven | 1989-02-21 |
| 4804884 | Display tube having improved brightness distribution | Leendert Vriens, John A. Clarke | 1989-02-14 |
| 4766498 | Image projection system | — | 1988-08-23 |
| 4683398 | Projection television display tube and device having interference filter | Leendert Vriens, John Clark | 1987-07-28 |
| 4647812 | Display tube having a display window with an interference filter | Leendert Vriens, Johannes C. N. Rijpers, Titus E. C. Brandsma | 1987-03-03 |
| 4634926 | Display tube provided with an interference filter | Leendert Vriens, Johannes C. N. Rijpers, Titus E. C. Brandsma | 1987-01-06 |