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:
May. 10, 2016
Filed:
Oct. 11, 2013
Nec Casio Mobile Communications, Ltd., Kawasaki-shi, Kanagawa, JP;
Yasuharu Onishi, Kanagawa, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
An electroacoustic transducer comprises a piezoelectric vibrator; a casing being provided with a predetermined space from the piezoelectric vibrator and including a frustum shape cutout in an inner wall thereof; and an acoustic absorption material being fitted in the cutout wherein a sound hole is formed in the casing in front of the piezoelectric vibrator in an oscillating direction of the piezoelectric vibrator; and the casing is formed in the casing such that a hole diameter of a sound path decreases toward a front end in the oscillating direction of the piezoelectric vibrator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile