US Patent 7721846 Sound absorbing material
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Patent abstract
Sound absorbing board (10) is made from recycled high density foam granulate (12) that has been mixed with a binder (14) and consolidated under pressure. Pores (16) are present in spaces between the granules. Each granule includes small pores (18). Sound is absorbed by thermal diffusion and viscous friction.
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Patent Inventor Names
David Charles Hothersall0
Kirill Vjatcheslavovitch Horoshenkov0
Mark Johnathan Swift0
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US Patent 07721846 Sound absorbing material US Patent 7721846 Sound absorbing material
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Patent Number
077218460
Patent Number
77218460
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Official Website
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Infobox
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Patent Jurisdiction
Patent Number
077218460
Date of Patent
May 25, 2010
0Patent Application Number
103448130
Date Filed
August 14, 2001
0Official Website
Patent Primary Examiner
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US Patent 07721846 Sound absorbing material
Infobox
Is a
Patent jurisdiction
Patent number
07721846
Date of patent
May 25, 2010
Patent application number
10344813
Date Filed
August 14, 2001
Patent primary examiner
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