Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8054966 | Echo cancellation and noise reduction adaptation during ringing signal playback | Fredrik Stenmark, Stefan Gustavsson | 2011-11-08 |
| 7766120 | Cap for use as hearing protection | Fredrik Hansson, Peter Franzen | 2010-08-03 |
| 7589631 | Adaptive audio signals in portable communications devices | Claes Hovmalm, Magnus Hansson | 2009-09-15 |
| 6427800 | Ear plug and method of manufacturing an ear plug | Lars B. Nilsson | 2002-08-06 |
| 5970160 | Earmuff | Lars B. Nilsson | 1999-10-19 |
| 5815842 | Ear protection cap with improved sound absorption | — | 1998-10-06 |