Patent ID: 9617728
Date: 2017-04-11
CPC Classifications: B29C,B29K,B29L,E04B,G10K

Claim:
1. A sound absorbing panel for indoor use, wherein the sound absorbing panel comprises: molded synthetic foam of either molded polyurethane foam or formed melamine resin; and wherein the sound absorbing panel comprises a piece of furniture for indoor use; wherein the sound absorbing panel is arranged and configured to have a normal incidence sound absorption coefficient of greater than 0.5 at frequencies between 500 Hz and 5 kHz; and wherein the sound absorbing panel is further arranged and configured to have a normal incidence sound absorption coefficient of greater than 0.7 at frequencies between 800 Hz and 5 kHz; and wherein the sound absorbing panel is still further arranged and configured to have a practical sound absorption coefficient equal to or greater than 0.65 at frequencies of 250 Hz and higher.