Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9752568 | Apparatus and method for providing a user interface to an information processing system | Ronaldus Maria Aarts, Okke Ouweltjes, Gerben Kooijman | 2017-09-05 |
| 8588449 | Audio driver | Okke Ouweltjes, Gerben Kooijman, Ronaldus Maria Aarts | 2013-11-19 |
| 8218318 | Low noise cooling device | Ronaldus Maria Aarts, Clemens Johannes Maria Lasance, Okke Ouweltjes | 2012-07-10 |
| 6865274 | Loudspeaker production system having frequency band selective audio power control | Ronaldus Maria Aarts | 2005-03-08 |
| 5892183 | Loudspeaker system having a bass-reflex port | Nicolaas Bernardus Roozen, Jozef E. M. Vael | 1999-04-06 |
| 5737435 | Sound-reproducing apparatus comprising an acoustic horn, and acoustic horn for use in the apparatus | Gerrit De Poortere, Martinus P. M. Van De Thillart, Guido Odilon Maurits D'Hoogh | 1998-04-07 |
| 5479520 | Loudspeaker system | Johannes W. T. Bax, Martinus P. M. Van Den Thillart | 1995-12-26 |
| 5471018 | Audio or video apparatus with a built-in loudspeaker | Johannes W. T. Bax, Cornelis J. Oepkes, Henricus H. Roelofs, Martinus P. M. Van Den Thillart | 1995-11-28 |
| 5414230 | Silencer arrangement for combustion engines | Johannes W. T. Bax, Andre J. De Wachter | 1995-05-09 |
| 5261006 | Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube | Johannes W. T. Bax, Frans A. Westra | 1993-11-09 |
| 4847908 | Loudspeaker having a two-part diaphragm for use as a car loudspeaker | Johannes W. T. Bax, Johannes J. M. Kamphues, Franciscus C. M. De Haas | 1989-07-11 |
| 4829581 | Electrodynamic transducer comprising a two-part diaphragm | Georgius B. J. Sanders | 1989-05-09 |
| 4723296 | Electrodynamic transducer of the isophase or ribbon type | Georgius B. J. Sanders, Johannes W. T. Bax | 1988-02-02 |
| 4703232 | Combination of a monochrome cathode-ray tube and a deflection unit having a high resolution | Werner A. L. Heijnemans, Albertus Aemilius Seyno Sluijterman, Nicolaas G. Vink | 1987-10-27 |
| 4612420 | Loudspeaker system for converting a digitized electric signal into an acoustic signal | Wilhelmus D. A. M. van Gijsel | 1986-09-16 |
| 4566120 | Loudspeaker system and loudspeaker for use in a loud-speaker system for converting an n-bit digitized electric signal into an acoustic signal | Franciscus J. Op de Beek, Georgius B. J. Sanders, Wilhelmus D. A. M. van Gijsel, Jacob M. Van Nieuwland | 1986-01-21 |
| 4555797 | Hybrid loudspeaker system for converting digital signals to acoustic signals | Wilhelmus D. A. M. van Gijsel, Georgius B. J. Sanders, Jacob M. Van Nieuwland | 1985-11-26 |
| 4547631 | Large-excursion electroacoustic transducer | Georgius B. J. Sanders, Cornelis D. Van Dijk, Adrianus J. M. Kaizer | 1985-10-15 |
| 4544806 | Ribbon-type transducer with a multi-layer diaphragm | Wilhelmus D. A. M. van Gijsel, Georgius B. J. Sanders | 1985-10-01 |
| 4484037 | Ribbon-type electro-acoustic transducer with low distortion and improved sensitivity | Wilhelmus D. A. M. van Gijsel | 1984-11-20 |
| 4396897 | Cathode ray tube having permanent magnets for modulating the deflection field | Albertus Aemilius Seyno Sluijterman, Werner A. L. Heijnemans, Nicolaas G. Vink | 1983-08-02 |
| 4272727 | Self-converging deflection units for color display tubes of different screen formats | Nicolaas G. Vink, Werner A. L. Heijnemans | 1981-06-09 |
| 4242612 | Deflection unit for color television display tubes | Werner A. L. Heijnemans, Nicolaas G. Vink | 1980-12-30 |
| 4237437 | Deflection unit for color television display tubes | Nicolaas G. Vink, Werner A. L. Heijnemans | 1980-12-02 |
| 4229720 | Deflection unit for a color television display tube | Werner A. L. Heijnemans, Nicolaas G. Vink | 1980-10-21 |