Inventor · disambiguated record
Johannes J. W. Kalfs
Also filed as: KALFS JOHANNES J W · KALFS JOHANNES JOZEF WILHELMUS
14 granted patents·1 pending application·127 citations·filing 1982–2014
92Inventor score
Files withPHILIPS CORP6KONINKLIJKE PHILIPS NV2ONSTREAM INC2PHILIPS LIGHTING HOLDING BV2KONINKL PHILIPS NV1
Top patents by PatentIndex Score
15 records- 0192US9574934B2Illumination sensor for distinguishing between different contributions to a sensed light levelPHILIPS LIGHTING HOLDING BV·Filed 2013·Granted Feb 21, 2017·26 cites·12 claims
- 0277US9596734B2Anti-tampering daylight harvesting systemPHILIPS LIGHTING HOLDING BV·Filed 2014·Granted Mar 14, 2017·4 cites·9 claims
- 0374US4641310AData processing system in which unreliable words in the memory are replaced by an unreliability indicatorPHILIPS CORP·Filed 1984·Granted Feb 3, 1987·19 cites·9 claims
- 0470US6477003B1System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the mediumFiled 2000·Granted Nov 5, 2002·7 cites·2 claims
- 0565US9554446B2Calibration operation of a lighting deviceKONINKLIJKE PHILIPS NV·Filed 2014·Granted Jan 24, 2017·1 cites·15 claims
- 0665US5488516AApparatus for reproducing n digital signals from n adjacent tracks on a record carrierPHILIPS CORP·Filed 1994·Granted Jan 30, 1996·17 cites·6 claims
- 0759US5949607ASystem, apparatus and method for recording and reproducing informationPHILIPS CORP·Filed 1996·Granted Sep 7, 1999·14 cites·14 claims
- 0849US4464746AArrangement for correcting pulse distortion in homochronous data transmissionPHILIPS CORP·Filed 1982·Granted Aug 7, 1984·12 cites·1 claims
- 0947US9869758B2Mitigating disturbance in sensingKONINKLIJKE PHILIPS NV·Filed 2014·Granted Jan 16, 2018·0 cites·15 claims
- 1047US5805372APositioning of a head relative to a plurality of tracksU S PHILIP CORP·Filed 1996·Granted Sep 8, 1998·9 cites·20 claims
- 1146US4481385AArrangement for cancelling echo signalsPHILIPS CORP·Filed 1982·Granted Nov 6, 1984·11 cites·1 claims
- 1246US2016088714A1Controlling a function of a spaceKONINKL PHILIPS NV·Filed 2014·Application pending·0 cites
- 1342US6061196ASystem for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the mediumONSTREAM INC·Filed 1997·Granted May 9, 2000·5 cites·18 claims
- 1426US5912637AMagnetic recording method and apparatus which provide at least two write pulses for each binary signal bit to be recordedPHILIPS CORP·Filed 1996·Granted Jun 15, 1999·1 cites·21 claims
- 1522US5933290ARecording an information signal on a record carrier provided with tracking signalsONSTREAM INC·Filed 1996·Granted Aug 3, 1999·1 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →