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| US4250875 | 2 févr. 1979 | 17 févr. 1981 | | Canine ear strengthening and training device |
| US4314553 | 8 août 1979 | 9 févr. 1982 | Bilsom AB | Earplug and earplug set |
| US4671265 | 26 nov. 1985 | 9 juin 1987 | Bilsom AB | Earplug device |
| US4819624 | 18 juin 1987 | 11 avr. 1989 | | Banded earplug |
| US5058606 | 31 oct. 1989 | 22 oct. 1991 | | Method for sealing external auditory ear canal |
| US6123168 | 30 juin 1997 | 26 sept. 2000 | Dalloz Safety AB | Banded hearing protector |
| US6480612 | 8 juin 2001 | 12 nov. 2002 | Koryo Industrial Co., Ltd. | Holder-ring for earphone plug |
| US6741719 | 6 mars 2001 | 25 mai 2004 | Meditron AS | Head phone |
| US7889881 | 25 avr. 2006 | 15 févr. 2011 | | Ear canal speaker system method and apparatus |
| USD292530 | 22 mai 1985 | 27 oct. 1987 | | Headband earplugs |
| USD587680 | 20 mars 2008 | 3 mars 2009 | Sony Corporation | Headphone |
| USD628348 | 3 sept. 2009 | 30 nov. 2010 | | Pet ear lifter |
