Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |