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:
Jul. 05, 1983
Filed:
May. 27, 1981
Junichi Tamamura, Yao, JP;
Mamoru Yasuda, Kashiwara, JP;
Motomi Hosoda, Kashiwara, JP;
Shinichi Saeki, Yao, JP;
Hosiden Electronics Co., Ltd., Osaka, JP;
Abstract
A condenser microphone in which a back electrode, disposed oppositely to the rear surface of a diaphragm, and a circuit assembling plate disposed oppositely to the rear surface of the back electrode, are held in a holder. Electronic circuit elements are attached to only one surface of the circuit assembling plate, and the other surface thereof is faced toward the rear surface of the back electrode with a predetermined distance provided therebetween. A back chamber, defined by a space between the back electrode and the circuit assembling plate, and enclosed by the holder improves the characteristics of microphone frequency response.