Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7426160 | Device for detecting position information from an optical record carrier | Johannes Hendrikus Maria Spruit | 2008-09-16 |
| 7355937 | Method and device for recording information in units | Gijsbert J. Van Den Enden, Johannes Hendrikus Maria Spruit, Ronald R. Drenten, Jacobus M. Eradus, Robert Albertus Brondijk +1 more | 2008-04-08 |
| 7330415 | Optical record carrier recording method and recording apparatus | Johannes Hendrikus Maria Spruit | 2008-02-12 |
| 7038991 | Method and device for recording information in units | Johannes Hendrikus Maria Spruit | 2006-05-02 |
| 6967909 | Method and device for recording information in units | Gijsbert J. Van Den Enden, Johannes Hendrikus Maria Spruit, Ronald R. Drenten, Jacobus M. Eradus, Robert Albertus Brondijk +1 more | 2005-11-22 |
| 6853615 | Optical record carrier | Johannes Hendrikus Maria Spruit | 2005-02-08 |
| 6765861 | Record carrier and apparatus for scanning the record carrier | Johannes Hendrikus Maria Spruit, Ronald R. Drenten, Jakob Gerrit Nijboer, Paulus G. P. Weyenbergh | 2004-07-20 |
| 6714508 | Optical recording carrier having groove wobble phase changes between subsequent predetermined positions | Johannes Hendrikus Maria Spruit | 2004-03-30 |
| 6628583 | Method and device for recording information in linking block units | Gijsbert J. Van Den Enden, Johannes Hendrikus Maria Spruit, Ronald R. Drenten, Jacobus M. Eradus, Robert Albertus Brondijk +1 more | 2003-09-30 |
| 6538982 | Record carrier and apparatus for scanning the record carrier | Johannes Hendrikus Maria Spruit, Ronald R. Drenten, Jakob Gerrit Nijboer, Paulus G. P. Weyenbergh | 2003-03-25 |
| 6295270 | Optical record carrier with grooves having wobbles with phases depending on position information pits at predetermined positions | Gijsbert J. Van Den Enden, Johannes H. M. Spruit, Ronald R. Drenten | 2001-09-25 |
| 6269071 | Optical record carrier | Gijsbert J. Van Den Enden, Johannes H. M. Spruit, Ronald R. Drenten | 2001-07-31 |
| 5739986 | Magnetic tape recording/reproducing device comprising a head-drum unit using capacitive and inductive couplings to transfer signals from and to the write and read heads | Theodorus Petrus Henricus Gerardus Jansen | 1998-04-14 |
| 5619171 | Phase-locked loop, phase comparator for use in the phase-locked loop, and reproducing device including the phase-locked loop | Albert M. A. Rijckaert | 1997-04-08 |