Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6512732 | Device for optically scanning information tracks on a plane using two subbeams | Martinus P. M. Bierhoff, Peter Coops, Jozef Petrus Henricus Benschop | 2003-01-28 |
| 6452876 | Positioning system and apparatus including the positioning system | George Alois Leonie Leenknegt, Cornelius Antonius Hezemans | 2002-09-17 |
| 6314065 | Optical scanning apparatus for a multi-layer record carrier, including a focus control circuit | — | 2001-11-06 |
| 6218800 | Control system, driving system and control method, apparatus including the driving system | Cornelius Antonius Hezemans | 2001-04-17 |
| 5793721 | Optical scanning apparatus for a multi-layer record carrier, including a focus control circuit | — | 1998-08-11 |
| 5757744 | Optical scanning apparatus for a multi-layer record carrier, including a focus control circuit | — | 1998-05-26 |
| 5402401 | Scanning device with two-stage controller for positioning a scanning point | — | 1995-03-28 |
| 5321676 | Record carrier scanning apparatus wherein the scanning head is positioned without feedback and a predetermined range of fine positioning of the scanning point is maintained | Johannes L. van Velthoven, Theodorus A. Koopmanschap | 1994-06-14 |
| 5289446 | Device for scanning a record carrier | Anthonius L. J. Dekker | 1994-02-22 |
| 5268885 | Method and means for detecting and stablizing control loop parameters of apparatus for scanning a record carrier | — | 1993-12-07 |
| 5140574 | Read and/or write device | Henri Cloetens, Robertus W. C. Groen | 1992-08-18 |
| 4861982 | Scanning optical microscope with position detection grating | Albert Smid, Jozef Petrus Henricus Benschop, Cornelis J. P. M. Rooyackers | 1989-08-29 |
| 4772119 | Device for detecting a magnification error in an optical imaging system | Gijsbertus Bouwhuis, Guido C. Van De Looy | 1988-09-20 |