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.:

US 8767998 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 01, 2014

Filed:

Feb. 19, 2010
Applicants:

Keisuke Imamura, Osaka, JP;

Yukihiro Shimasaki, Hyogo, JP;

Kiyoshi Ohashi, Osaka, JP;

Yoshimichi Kajihara, Mie, JP;

Yohei Jin, Mie, JP;

Inventors:

Keisuke Imamura, Osaka, JP;

Yukihiro Shimasaki, Hyogo, JP;

Kiyoshi Ohashi, Osaka, JP;

Yoshimichi Kajihara, Mie, JP;

Yohei Jin, Mie, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small.


Find Patent Forward Citations

Imamura, Keisuke. (2014). Pressure adjustor and method of manufacturing the same, speaker device using the pressure adjustor, electronic device, and vehicle (U.S. Patent No. 8767998). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8767998

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