|
| US4237449 | 16 Jun 1978 | 2 Dec 1980 | | Signalling device for hard of hearing persons |
| US4450930 | 3 Sep 1982 | 29 May 1984 | Industrial Research Products, Inc. | Microphone with stepped response |
| US5068901 | 1 May 1990 | 26 Nov 1991 | Knowles Electronics, Inc. | Dual outlet passage hearing aid transducer |
| US5533130 | 15 Aug 1994 | 2 Jul 1996 | | Cosmetically disguised hearing aid |
| US6000492 | 29 Jun 1998 | 14 Dec 1999 | Resound Corporation | Cerumen block for sound delivery system |
| US6009183 | 30 Jun 1998 | 28 Dec 1999 | Resound Corporation
Motorola, Inc. | Ambidextrous sound delivery tube system |
| US6275596 | 10 Jan 1997 | 14 Aug 2001 | GN ReSound Corporation | Open ear canal hearing aid system |
| US6681022 | 22 Jul 1998 | 20 Jan 2004 | GN ReSound North Amerca Corporation | Two-way communication earpiece |
| US7027608 | 17 Jul 1998 | 11 Apr 2006 | GN ReSound North America | Behind the ear hearing aid system |
| US7065224 | 28 Sep 2001 | 20 Jun 2006 | Sonionmicrotronic Nederland B.V. | Microphone for a hearing aid or listening device with improved internal damping and foreign material protection |
| US7072482 | 6 Sep 2002 | 4 Jul 2006 | Sonion Nederland B.V. | Microphone with improved sound inlet port |
| US7606382 | 17 Nov 2006 | 20 Oct 2009 | Hear-Wear Technologies LLC | BTE/CIC auditory device and modular connector system therefor |
| US8050437 | 17 Nov 2006 | 1 Nov 2011 | Hear-Wear Technologies, LLC | BTE/CIC auditory device and modular connector system therefor |
| US8094850 | 7 Aug 2009 | 10 Jan 2012 | Hear-Wear Technologies, LLC | BTE/CIC auditory device and modular connector system therefor |
