Issued Patents All Time
Showing 76–100 of 111 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE43273 | Generation of a sound signal | Roy Irwan, Daniel Willem Elisabeth Schobben | 2012-03-27 |
| 8059201 | Method and apparatus for providing a video signal | Gerard Henri Bloemen | 2011-11-15 |
| 7702114 | High efficiency audio transducer | — | 2010-04-20 |
| 7489792 | Generation of a sound signal | Roy Irwan, Daniel Willem Elisabeth Schobben | 2009-02-10 |
| 7474754 | Method for canceling unwanted loudspeaker signals | Daniel Willem Elisabeth Schobben | 2009-01-06 |
| 7474752 | Audio frequency range adaptation | Okke Ouweltjes, Daniel Willem Elisabeth Schobben | 2009-01-06 |
| 7437299 | Coding of stereo signals | Roy Irwan | 2008-10-14 |
| 7359522 | Coding of stereo signals | Roy Irwan | 2008-04-15 |
| 7321529 | Shuffle device and central control device provided with the shuffle device | — | 2008-01-22 |
| 7110556 | Multichannel audio signal processing device | Fransiscus Marinus Jozephus De Bont, Paulus Henricus Antonius Dillen, Augustus Josephus Elizabeth Maria Janssen | 2006-09-19 |
| 7088779 | Method and apparatus for reducing the word length of a digital input signal and method and apparatus for recovering a digital input signal | — | 2006-08-08 |
| 7054816 | Audio signal processing device | Robertus T. J. Toonen Dekkers, Gerardus Lokhoff | 2006-05-30 |
| 7054455 | Audio system | — | 2006-05-30 |
| 6961435 | Infra bass | Erik Larsen | 2005-11-01 |
| RE38822 | Circuit, audio system and method for processing signals, and a harmonics generator | Stephanus P. Straetemans | 2005-10-11 |
| 6882731 | Multi-channel audio converter | Roy Irwan | 2005-04-19 |
| 6865274 | Loudspeaker production system having frequency band selective audio power control | Joris A. M. Nieuwendijk | 2005-03-08 |
| 6829361 | Headphones with integrated microphones | — | 2004-12-07 |
| 6791519 | Sound and vision system | Mark Thomas Johnson | 2004-09-14 |
| 6792119 | Audio system | — | 2004-09-14 |
| 6678380 | Audio system | — | 2004-01-13 |
| 6496584 | Multi-channel stereo converter for deriving a stereo surround and/or audio center signal | Roy Irwan | 2002-12-17 |
| 6456718 | Audio system | — | 2002-09-24 |
| 6292570 | Surround sound | — | 2001-09-18 |
| 6134330 | Ultra bass | Gerrit De Poortere, Catherine Polisset | 2000-10-17 |