JK

Johannes J. W. Kalfs

U.S. Philips: 7 patents #535 of 8,851Top 7%
PB Philips Lighting Holding B.V.: 4 patents #138 of 962Top 15%
ON Onstream: 2 patents #2 of 6Top 35%
Overall (All Time): #348,400 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
9869758 Mitigating disturbance in sensing Jurgen Mario Vangeel, Roger Peter Anna Delnoij, Michel Albertus Theodorus Klein Swormink, Petrus Antonius Verbeek, Johannes M. M. Hensing 2018-01-16
9596734 Anti-tampering daylight harvesting system Roger Peter Anna Delnoij, Jurgen Mario Vangeel, Michel Albertus Theodorus Klein Swormink, Petrus Antonius Verbeek, Johannes M. M. Hensing +1 more 2017-03-14
9574934 Illumination sensor for distinguishing between different contributions to a sensed light level Petrus Antonius Verbeek, Michel Albertus Theodorus Klein Swormink, Roger Peter Anna Delnoij, Johannes M. M. Hensing, Jurgen Mario Vangeel 2017-02-21
9554446 Calibration operation of a lighting device Michel Albertus Theodorus Klein Swormink, Michiel Adriaanszoon Klompenhouwer, Marek Zbigniew Szczerba, Jurgen Mario Vangeel, Roger Peter Anna Delnoij +2 more 2017-01-24
6477003 System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the medium Abraham Hoogendoorn 2002-11-05
6061196 System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the medium Abraham Hoogendoorn 2000-05-09
5949607 System, apparatus and method for recording and reproducing information Abraham Hoogendoorn 1999-09-07
5933290 Recording an information signal on a record carrier provided with tracking signals Abraham Hoogen-Doorn 1999-08-03
5912637 Magnetic recording method and apparatus which provide at least two write pulses for each binary signal bit to be recorded Abraham Hoogendoorn, Willem Arie ROOS 1999-06-15
5805372 Positioning of a head relative to a plurality of tracks Abraham Hoogendoorn 1998-09-08
5488516 Apparatus for reproducing n digital signals from n adjacent tracks on a record carrier Franciscus A. Kneepkens 1996-01-30
4641310 Data processing system in which unreliable words in the memory are replaced by an unreliability indicator Theodorus G. J. A. Martens, Frits A. Steenhof 1987-02-03
4481385 Arrangement for cancelling echo signals 1984-11-06
4464746 Arrangement for correcting pulse distortion in homochronous data transmission Wilfred A. M. Snijders, Petrus J. Van Gerwen 1984-08-07