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:
Jan. 26, 2016
Filed:
Dec. 20, 2011
Yuichiro Kishinami, Kanagawa, JP;
Yasuharu Onishi, Kanagawa, JP;
Motoyoshi Komoda, Kanagawa, JP;
Nobuhiro Kawashima, Kanagawa, JP;
Yukio Murata, Kanagawa, JP;
Jun Kuroda, Kanagawa, JP;
Shigeo Satou, Kanagawa, JP;
Yuichiro Kishinami, Kanagawa, JP;
Yasuharu Onishi, Kanagawa, JP;
Motoyoshi Komoda, Kanagawa, JP;
Nobuhiro Kawashima, Kanagawa, JP;
Yukio Murata, Kanagawa, JP;
Jun Kuroda, Kanagawa, JP;
Shigeo Satou, Kanagawa, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
There is provided an electroacoustic transducer including: an oscillation device () that outputs a sound wave () from a first vibrating surface, and outputs a sound wave (), having an opposite phase to that of the sound wave (), from a second vibrating surface which is opposite to the first vibrating surface; a waveguide () that is provided on the first vibrating surface and that includes an open end (); a waveguide () that is provided on the second vibrating surface, and includes an open end () which faces the same direction as the open end (); and a sound wave filter () that is provided in the waveguide () and attenuates the sound wave ().