The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 2012
Filed:
Apr. 02, 2007
Applicants:
Shuji Saiki, Nara, JP;
Toshiyuki Matsumura, Osaka, JP;
Akiko Fujise, Osaka, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
The speaker system according to the present invention is a speaker system in which a sound is emitted into a closed space from the back surface of a speaker unit, and has characteristic that gas in the closed space is physically adsorbed by a gas adsorber obtained by adding a binder to a porous material including a plurality of grains so as to perform molding. The speaker system according to the present invention is capable of reproducing, even when a small cabinet is used, low frequency sound while suppressing reduction in sound pressure level as compared to a conventional art.