LP

Lambertus Postma

U.S. Philips: 14 patents #132 of 8,851Top 2%
Overall (All Time): #356,998 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6238731 Method of manufacturing a magnetic head Jacobus J. M. Ruigrok, Pieter Jan Van Der Zaag, Wiepke Folkerts, Ronald M. Wolf, Johannes F. M. Cillessen 2001-05-29
6205007 Thin-film magnetic head and method of manufacturing the magnetic head Jacobus J. M. Ruigrok, Pieter Jan Van Der Zaag, Wiepke Folkerts, Ronald M. Wolf, Johannes F. M. Cillessen 2001-03-20
6045715 Method of post-etching a mechanically treated substrate Gijsbertus A. C. M. Spierings, Poul K. Larsen, Jan Baptist Petrus Henricus Van Der Putten, Johannes Maria Marcus Busio, Frederik Hendrik In 'T Veld 2000-04-04
6028749 Magnetic head having a multilayer structure and method of manufacturing the magnetic head 2000-02-22
5933298 System comprising a magnetic head, measuring device and a current device Gerardus H. J. Somers, Jacobus J. M. Ruigrok 1999-08-03
5764453 Method of manufacturing a thin-film magnetic head, and magnetic head manufactured by means of said method Arie J. Van Straalen, Gerardus H. J. Somers 1998-06-09
5637028 Method of polishing a surface of a noble metal Jan Haisma, Cornelis L. Adema, Mathijs P. H. Souts 1997-06-10
5622525 Method of polishing a surface of copper or an alloy comprising mainly copper Jan Haisma, Peter W. De Haas, Dirk Kornelis Gerhardus De Boer, Waltherus Van Den Hoogenhof 1997-04-22
5531016 Method of manufacturing a thin-film magnetic head Henricus G. R. Maas, Jan Haisma, Jacobus J. M. Ruigrok, Gerardus H. J. Somers 1996-07-02
5483735 Method of manufacturing a thin-film magnetic head Jan Haisma, Jacobus J. M. Ruigrok, Gerardus H. J. Somers 1996-01-16
4651249 Magnetic head having a step-shaped gap Thijs W. Bril, Pieter Dekker, Cornelis H. M. Witmer 1987-03-17
4425593 Magnetoresistive head 1984-01-10
4239587 Method of manufacturing a thin-film magnetic head with a nickel-iron pattern having inclined edges Gerrit J. Koel 1980-12-16
4238277 Method of manufacturing a magnetic device Thijs W. Bril 1980-12-09