Disclosed are foam compositions with enhanced sound attenuation characteristics for use in earpieces, for example, user-disposable foam members such as foam tips for sound control devices including sound transmission devices and earplugs in which a relationship between the size of the pores and the volume of the cells of the polymeric may be controlled.
申请公布号
WO2011017453(A1)
申请公布日期
2011.02.10
申请号
WO2010US44450
申请日期
2010.08.04
申请人
HEARING COMPONENTS, INC.;PARISH, WILLIAM;KOLPE, VASANT V.