Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2007-03-29
2009-10-13
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S292000, C181S286000
Reexamination Certificate
active
07600609
ABSTRACT:
In order to provide a sound-absorbing panel and a production method of the same which has excellent freedom of design and have small differences in the maximum sound-absorbing coefficients among products, a sound-absorbing panel is adopted which is characterized by a panel main body which is constituted by arranging both a porous veneer of 0.02-0.5 mm thickness with multiple pierced apertures of 0.1 mm or smaller aperture diameters or 0.2 mm or smaller aperture diameters and a porous sound-absorbing base material set at a backside of the porous veneer so as to be overlapped, and is characterized by having a value of airflow resistance in a range of 0.1-1.0 Pa.
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Martin Edgardo San
Smith Patent Office
Yamaha Corporation
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