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. 30, 2008
Filed:
Dec. 09, 2005
Applicants:
Chao-chih Chang, Taichung, TW;
Ray-hua Horng, Taichung, TW;
Jean-yih Tsai, Taichung Hsien, TW;
Chung-chin Lai, Taichung, TW;
Ji-liang Chen, Chang-Hua Hsien, TW;
Inventors:
Chao-Chih Chang, Taichung, TW;
Ray-Hua Horng, Taichung, TW;
Jean-Yih Tsai, Taichung Hsien, TW;
Chung-Chin Lai, Taichung, TW;
Ji-Liang Chen, Chang-Hua Hsien, TW;
Assignee:
Taiwan Carol Electronics Co., Ltd., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for making a diaphragm unit of a condenser microphone includes the steps of: forming a liftoff layer on a substrate; forming an insulator diaphragm film on the liftoff layer; and removing the liftoff layer from the diaphragm film and the substrate so as to separate the diaphragm film from the substrate.