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:
Mar. 30, 1999
Filed:
Jul. 02, 1996
Applicant:
Inventors:
Kathirgamasundaram Sooriakumar, Scottsdale, AZ (US);
Daniel J Koch, Mesa, AZ (US);
Kenneth G Goldman, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381174 ; 381191 ; 437209 ;
Abstract
A capacitive microphone (10) utilizes a polysilicon diaphragm (14) that overlies an atmospheric cavity (34). The diaphragm is doped and annealed to form a sensitivity of the microphone (10). A silicon cap covers and protects the diaphragm (14) and a fixed plate (18).
Sooriakumar, Kathirgamasundaram. (1999). Capacitive microphone and method therefor (U.S. Patent No. 5889872). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5889872
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile