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Saito; Yoshiaki
Chiba, JP
No. of patents:

Patent Number Title Of Patent Date Issued
7364014 Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies April 29, 2008
A sound absorbing body 40 has a molded body 44 including two unexpanded layers 41, 42 and an expanded layer 43 having a number of voids and held between these unexpanded layers 41, 42, a plurality of holes 41A of a depth that passes through the unexpanded layer 41 and does not reach the

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