Inventor · disambiguated record
Leonardus J. Grassens
Also filed as: GRASSENS LEONARDUS · GRASSENS LEONARDUS J
21 granted patents·831 citations·filing 1986–2003
97Inventor score
Top patents by PatentIndex Score
21 records- 0197US5729511AOptical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signalDISCOVISION ASS·Filed 1995·Granted Mar 17, 1998·124 cites·44 claims
- 0296US6122232AIsolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including sameDISCOVISION ASS·Filed 1998·Granted Sep 19, 2000·88 cites·30 claims
- 0396US5136558ATwo axis electromagnetic actuatorAPPLIED MAGNETICS CORP·Filed 1989·Granted Aug 4, 1992·71 cites·39 claims
- 0494US5313332AFlexure suspension for two axis actuatorAPPLIED MAGNETICS CORP·Filed 1993·Granted May 17, 1994·78 cites·19 claims
- 0593US5177640ATwo-axis moving coil actuatorAPPLIED MAGNETICS CORP·Filed 1991·Granted Jan 5, 1993·79 cites·18 claims
- 0691US5265079ASeek actuator for optical recordingAPPLIED MAGNETICS CORP·Filed 1991·Granted Nov 23, 1993·45 cites·26 claims
- 0788US7231633B2Debugging with set verbosity level during read and analysis of executable code and associated comments while logging according to set verbosity levelLSI CORP·Filed 2003·Granted Jun 12, 2007·55 cites·19 claims
- 0887US4683520AMechanical shock mount system for electrical apparatusLASER MAGNETIC STORAGE INT·Filed 1986·Granted Jul 28, 1987·57 cites·4 claims
- 0985US6266306B1Analog to digital converter and assembly for use in optical drive system to normalize servo error signals and multiplex reference voltage inputs and digital outputsDISCOVISION ASS·Filed 1997·Granted Jul 24, 2001·24 cites·22 claims
- 1082US6532199B1Optical actuator assembly with lens position sensor for recording or playbackDISCOVISION ASS·Filed 2000·Granted Mar 11, 2003·13 cites·24 claims
- 1180US5532989ASeek actuator for optical recordingDISCOVISION ASS·Filed 1995·Granted Jul 2, 1996·29 cites·9 claims
- 1279US6243336B1Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal and focus capture method for use in sameDISCOVISION ASS·Filed 1998·Granted Jun 5, 2001·17 cites·81 claims
- 1376US6058081AOptical drive system having servomotor operated relative to maximum quad sum signalDISCOVISION ASS·Filed 1995·Granted May 2, 2000·15 cites·52 claims
- 1475US4945526AActuator assembly for optical disk systemsLASER MAGNETIC STORAGE INT·Filed 1988·Granted Jul 31, 1990·23 cites·23 claims
- 1573US5708633AMethod and apparatus for manufacturing information storage devicesDISCOVISION ASS·Filed 1996·Granted Jan 13, 1998·33 cites·17 claims
- 1659US6141300AOptical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including sameDISCOVISION ASS·Filed 1997·Granted Oct 31, 2000·14 cites·32 claims
- 1752US5768035AMethod and apparatus for aligning an objective lensDISCOVISION ASS·Filed 1995·Granted Jun 16, 1998·7 cites·28 claims
- 1850US4885998APatient support system for radiotherapyPHILIPS CORP·Filed 1988·Granted Dec 12, 1989·51 cites·14 claims
- 1943US6023379AMethod and apparatus for aligning an objective lensDISCOVISION ASS·Filed 1998·Granted Feb 8, 2000·7 cites·1 claims
- 2030US5808980ASeek actuator for optical recordingDISCOVISION ASS·Filed 1995·Granted Sep 15, 1998·0 cites·10 claims
- 2130US5790325AMethod and apparatus for focusing a lensDISCOVISION ASS·Filed 1995·Granted Aug 4, 1998·1 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →