Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10553089 | Building security and automation system speaker and method | Christopher Laguer Acera, Bruce Ehlers, Kaoru Hisamoto, David A. Krula, Brian Vencil Skarda +4 more | 2020-02-04 |
| 9967673 | Acoustic transducer comprising a plurality of coaxially arranged diaphragms | Andrew Unruh, Edward T. Norcott, Jr., Jens-Peter B. Axelsson, Alireza Jabbari, David J. Prince +3 more | 2018-05-08 |
| 9462388 | Acoustic transducer comprising a plurality of coaxially arranged diaphragms | Andrew Unruh, Edward T. Norcott, Jr., Jens-Peter B. Axelsson, Alireza Jabbari, David J. Prince +3 more | 2016-10-04 |
| 8897472 | Acoustic transducer comprising a plurality of coaxially arranged diaphragms | Andrew Unruh, Edward T. Norcott, Jr., Jens-Peter B. Axelsson, Alireza Jabbari, David J. Prince +3 more | 2014-11-25 |
| 7853025 | Vehicular audio system including a headliner speaker, electromagnetic transducer assembly for use therein and computer system programmed with a graphic software control for changing the audio system's signal level and delay | Pawel W. Sleboda, David J. Prince, Jerome Ng, David Emerling | 2010-12-14 |
| 7536019 | Audio system for use with a vehicle | Justin Putti, David J. Prince | 2009-05-19 |
| D591268 | Loudspeaker unit | Claus Futtrup, Birger Jorgensen, Niels Kofod, Martin Lolk Jensen, Simon Moller Nielsen | 2009-04-28 |
| 7272238 | Loudspeaker having cooling system | Jason Kemmerer | 2007-09-18 |
| 7050593 | Vehicular audio system and electromagnetic transducer assembly for use therein | David Emerling, Pawel W. Sleboda, John F. Mola, David J. Prince | 2006-05-23 |