AA

Antonius Hermanus Maria Akkermans

Philips: 18 patents #132 of 7,731Top 2%
U.S. Philips: 11 patents #220 of 8,851Top 3%
Koniniklijke Philips N.V.: 3 patents #2,122 of 7,486Top 30%
GB Genkey Netherlands B.V.: 2 patents #3 of 9Top 35%
IB Intrinsic Id B.V.: 2 patents #8 of 27Top 30%
Overall (All Time): #85,965 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
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