Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048670 | Powder-blasting method | Joseph C. M. Bosman, Harm Tolner, Henricus J. Ligthart | 2000-04-11 |
| 5833516 | Method of manufacturing a plate of electrically insulating material having a pattern of apertures and/or cavities | Franciscus M. H. Van Laarhoven, Johannes G. Van Beek | 1998-11-10 |
| 5800231 | Method of providing a pattern of apertures and/or cavities in a plate of non-metallic material | Franciscus M. H. Van Laarhoven, Johannus M.E. Van Laarhoven, Henricus J. Ligthart, Petrus H. W. Swinkels, Johannes G. Van Beek | 1998-09-01 |
| 5767621 | Display device having plate with electron guiding passages | Franciscus M. H. Van Laarhoven, Johannes G. Van Beek | 1998-06-16 |
| 5730635 | Method of providing a pattern of apertures and/or cavities in a plate of non-metallic material | Franciscus M. H. Van Laarhoven, Johannus M.E. Van Laarhoven, Henricus J. Ligthart, Petrus H. W. Swinkels, Johannes G. Van Beek | 1998-03-24 |
| 4847908 | Loudspeaker having a two-part diaphragm for use as a car loudspeaker | Joris A. M. Nieuwendijk, Johannes W. T. Bax, Johannes J. M. Kamphues | 1989-07-11 |
| 4432738 | Camera tube and method of manufacturing same | Johannes H. T. van Roosmalen | 1984-02-21 |
| 4309638 | Electron gun cathode support | Johannes H. T. van Roosmalen | 1982-01-05 |
| 4182973 | Electric discharge tube | Gerardus A. H. M. Vrijssen | 1980-01-08 |