Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5479520 | Loudspeaker system | Joris A. M. Nieuwendijk, Martinus P. M. Van Den Thillart | 1995-12-26 |
| 5471018 | Audio or video apparatus with a built-in loudspeaker | Joris A. M. Nieuwendijk, Cornelis J. Oepkes, Henricus H. Roelofs, Martinus P. M. Van Den Thillart | 1995-11-28 |
| 5414230 | Silencer arrangement for combustion engines | Joris A. M. Nieuwendijk, Andre J. De Wachter | 1995-05-09 |
| 5261006 | Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube | Joris A. M. Nieuwendijk, Frans A. Westra | 1993-11-09 |
| 4847908 | Loudspeaker having a two-part diaphragm for use as a car loudspeaker | Joris A. M. Nieuwendijk, Johannes J. M. Kamphues, Franciscus C. M. De Haas | 1989-07-11 |
| 4723296 | Electrodynamic transducer of the isophase or ribbon type | Joris A. M. Nieuwendijk, Georgius B. J. Sanders | 1988-02-02 |