Inventor · disambiguated record
Jacobus J. M. Ruigrok
Also filed as: HAISMA JAN · RUIGROK JACOBUS J M · RUIGROK JACOBUS JOSEPHUS MARIA
30 granted patents·396 citations·filing 1985–1999
97Inventor score
Files withPHILIPS CORP30
Top patents by PatentIndex Score
30 records- 0187US4927804AThin-film transformer and magnetic head provided with such a transformerPHILIPS CORP·Filed 1988·Granted May 22, 1990·36 cites·2 claims
- 0282US4686472AMagnetic sensor having closely spaced and electrically parallel magnetoresistive layers of different widthsPHILIPS CORP·Filed 1986·Granted Aug 11, 1987·45 cites·18 claims
- 0380US5270895ACombined read/write thin-film magnetic head with composite shared flux guidePHILIPS CORP·Filed 1991·Granted Dec 14, 1993·33 cites·22 claims
- 0475US5483735AMethod of manufacturing a thin-film magnetic headPHILIPS CORP·Filed 1994·Granted Jan 16, 1996·24 cites·24 claims
- 0573US4669015AMultiple gap magnetic reading headPHILIPS CORP·Filed 1985·Granted May 26, 1987·19 cites·9 claims
- 0666US5097243AThin-film transformer utilizing superconductive componentsPHILIPS CORP·Filed 1990·Granted Mar 17, 1992·20 cites·6 claims
- 0765US4670807AMagnetic write head with smooth frequency responsePHILIPS CORP·Filed 1985·Granted Jun 2, 1987·17 cites·7 claims
- 0863US6266217B1Magnetic head having an anti-ferromagnetic oxide layer between a flux guide and a magneto-resistive sensorPHILIPS CORP·Filed 1999·Granted Jul 24, 2001·13 cites·6 claims
- 0963US5600297AMagnetic field sensorPHILIPS CORP·Filed 1995·Granted Feb 4, 1997·25 cites·17 claims
- 1063US5153798AMagnetic head including a core having a non-magnetic gapPHILIPS CORP·Filed 1992·Granted Oct 6, 1992·14 cites·8 claims
- 1162US5241439ACombined read/write thin film magnetic head with two pairs of flux guidesPHILIPS CORP·Filed 1991·Granted Aug 31, 1993·16 cites·21 claims
- 1260US5258883AThin-film magnetic headPHILIPS CORP·Filed 1991·Granted Nov 2, 1993·13 cites·7 claims
- 1359US5726964AScanning head including a magneto-optical element and scanning device including the scanning headPHILIPS CORP·Filed 1995·Granted Mar 10, 1998·14 cites·10 claims
- 1457US5531016AMethod of manufacturing a thin-film magnetic headPHILIPS CORP·Filed 1994·Granted Jul 2, 1996·17 cites·28 claims
- 1555US5513057AMagnetic head with wear resistant layer having alignment mark, and magnetic head unit incorporating samePHILIPS CORP·Filed 1995·Granted Apr 30, 1996·13 cites·20 claims
- 1654US4907115ASuper conducting thin-film magnetic head including a magnetoresistive elementPHILIPS CORP·Filed 1988·Granted Mar 6, 1990·9 cites·4 claims
- 1752US4996621ASuperconducting device for reading information from a magnetic recording mediumPHILIPS CORP·Filed 1988·Granted Feb 26, 1991·14 cites·17 claims
- 1852US4764832AMagnetic transducing head having clad core facesPHILIPS CORP·Filed 1987·Granted Aug 16, 1988·9 cites·8 claims
- 1949US5210668AMagnetic head having soft-magnetic material cladded core limb facesPHILIPS CORP·Filed 1991·Granted May 11, 1993·9 cites·7 claims
- 2046US6238731B1Method of manufacturing a magnetic headPHILIPS CORP·Filed 1999·Granted May 29, 2001·7 cites·16 claims
- 2145US6233126B1Thin film magnetic head having low magnetic permeability layer, and method of manufacturing the magnetic headPHILIPS CORP·Filed 1996·Granted May 15, 2001·7 cites·12 claims
- 2243US5105323AAnistropic magnetic layer for reducing the signal to noise ratio between a magnetic head and a moveable information carrierPHILIPS CORP·Filed 1989·Granted Apr 14, 1992·5 cites·6 claims
- 2338US4937227AThin-film magnetic head including an inductive transducing elementPHILIPS CORP·Filed 1988·Granted Jun 26, 1990·6 cites·4 claims
- 2436US5914838AMagnetic head with magnetoresistive sensor, and scanning device provided with the magnetic headPHILIPS CORP·Filed 1997·Granted Jun 22, 1999·2 cites·9 claims
- 2532US5933298ASystem comprising a magnetic head, measuring device and a current devicePHILIPS CORP·Filed 1996·Granted Aug 3, 1999·1 cites·6 claims
- 2631US6110539AMethods for creating a magnetically permeable filmPHILIPS CORP·Filed 1999·Granted Aug 29, 2000·1 cites·5 claims
- 2731US5973889ASingle-channel magnetic head with magnetoresistive element in series with electrically conducting magnetic elementsPHILIPS CORP·Filed 1998·Granted Oct 26, 1999·3 cites·13 claims
- 2830US6278588B1Magnetoresistive magnetic field sensorPHILIPS CORP·Filed 1999·Granted Aug 21, 2001·2 cites·9 claims
- 2930US6205007B1Thin-film magnetic head and method of manufacturing the magnetic headPHILIPS CORP·Filed 1993·Granted Mar 20, 2001·1 cites·12 claims
- 3026US5984745AMethod of manufacturing a magnetic devicePHILIPS CORP·Filed 1998·Granted Nov 16, 1999·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →