Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Reexamination Certificate
2005-05-24
2005-05-24
Barnie, Rexford (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
C381S396000, C381S398000, C381S174000
Reexamination Certificate
active
06898292
ABSTRACT:
An electret microphone comprises a back plate having a stationary back electrode and secured to a substrate. An electret layer is formed on the stationary back electrode and a spacer is mounted on the back plate. A diaphragm electrode is mounted on the spacer.
REFERENCES:
patent: 5272758 (1993-12-01), Isogami et al.
patent: 2000197192 (2000-07-01), None
Takayama Koji
Tanabe Haruhisa
Barnie Rexford
Citizen Electronics Co. Ltd.
Dennison Schultz Dougherty & MacDonald
Nguyen Tuan Duc
LandOfFree
Electret microphone does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electret microphone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electret microphone will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3377232