JR

Jacobus J. M. Ruigrok

U.S. Philips: 31 patents #18 of 8,851Top 1%
Overall (All Time): #120,041 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDate
6278588 Magnetoresistive magnetic field sensor 2001-08-21
6266217 Magnetic head having an anti-ferromagnetic oxide layer between a flux guide and a magneto-resistive sensor Pieter Jan Van Der Zaag 2001-07-24
6238731 Method of manufacturing a magnetic head Pieter Jan Van Der Zaag, Wiepke Folkerts, Lambertus Postma, Ronald M. Wolf, Johannes F. M. Cillessen 2001-05-29
6233126 Thin film magnetic head having low magnetic permeability layer, and method of manufacturing the magnetic head Pieter Jan Van Der Zaag, Harald van Kampen 2001-05-15
6205007 Thin-film magnetic head and method of manufacturing the magnetic head Pieter Jan Van Der Zaag, Wiepke Folkerts, Lambertus Postma, Ronald M. Wolf, Johannes F. M. Cillessen 2001-03-20
6110539 Methods for creating a magnetically permeable film Pascal J. H. Bloemen 2000-08-29
5984745 Method of manufacturing a magnetic device Marinus L. A. Vrinten, Andre A. Verhulst, Casper Smit 1999-11-16
5973889 Single-channel magnetic head with magnetoresistive element in series with electrically conducting magnetic elements 1999-10-26
5933298 System comprising a magnetic head, measuring device and a current device Lambertus Postma, Gerardus H. J. Somers 1999-08-03
5914838 Magnetic head with magnetoresistive sensor, and scanning device provided with the magnetic head Pieter Jan Van Der Zaag 1999-06-22
5726964 Scanning head including a magneto-optical element and scanning device including the scanning head Hans Willem Van Kesteren 1998-03-10
5600297 Magnetic field sensor Martinus A. M. Gijs, Jacques Kools, Reinder Coehoorn, Wiepke Folkerts 1997-02-04
5531016 Method of manufacturing a thin-film magnetic head Lambertus Postma, Henricus G. R. Maas, Jan Haisma, Gerardus H. J. Somers 1996-07-02
5513057 Magnetic head with wear resistant layer having alignment mark, and magnetic head unit incorporating same Victor Zieren, Mathijs De Jongh, Arnold Broese Van Groenou 1996-04-30
5483735 Method of manufacturing a thin-film magnetic head Lambertus Postma, Jan Haisma, Gerardus H. J. Somers 1996-01-16
5301418 Method of manufacturing a magnetic head Franciscus W. A. Dirne, Adrianus P. Severijns, Jacobus Bernardus Giesbers 1994-04-12
5270895 Combined read/write thin-film magnetic head with composite shared flux guide Franciscus A. Pronk 1993-12-14
5258883 Thin-film magnetic head 1993-11-02
5241439 Combined read/write thin film magnetic head with two pairs of flux guides P. Michalek, Victor Zieren, Gerardus H. J. Somers 1993-08-31
5210668 Magnetic head having soft-magnetic material cladded core limb faces Cornelis W. M. P. Sillen, Franciscus W. A. Dirne, Wolfgang Binder-Krieglstein, Ulrich Traxlmayr 1993-05-11
5153798 Magnetic head including a core having a non-magnetic gap Victor Zieren 1992-10-06
5105323 Anistropic magnetic layer for reducing the signal to noise ratio between a magnetic head and a moveable information carrier 1992-04-14
5097243 Thin-film transformer utilizing superconductive components Victor Zieren 1992-03-17
4996621 Superconducting device for reading information from a magnetic recording medium Victor Zieren, Ulrich E. Enz, Willem F. Druyvesteyn 1991-02-26
4937227 Thin-film magnetic head including an inductive transducing element Ulrich E. Enz, Victor Zieren 1990-06-26