Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2011-05-10
2011-05-10
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S293000, C264S156000, C264S045500
Reexamination Certificate
active
07938228
ABSTRACT:
A process for producing a sound absorber having skin layers constituting front and back surfaces and, interposed between the skin layers, a void layer having a plurality of pin formed holes, each hole having a depth which is enough to penetrate one of the skin layers and is not enough to reach the other skin layer. The sound absorber is formed of a resin material containing 2 to 60 wt % of reinforcing fibers with a length of 2 to 100 mm.
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Goda Hirofumi
Okamura Masaharu
Saito Yoshiaki
Sakai Toshifumi
Suga Takeharu
DaikyoNishikawa Corporation
Martin Edgardo San
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Prime Polymer Co., Ltd.
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