A capacitive sound transducer having a perforated attenuation disc
CA 2622035 C · Owner: Sennheiser Electronic Gmbh & Co. Kg · Inventors: Hibbing, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a capacitive sound transducer and a condenser microphone having such a sound transducer. The sound transducer comprises a diaphragm (3) and a counterelectrode (1) which is disposed at a short distance from the diaphragm (3) and provided with first perforations (2). In order to attenuate natural oscillations of the diaphragm (3) at high frequencies a , capacitive sound transducer is proposed in which a sound-permeable attenuation disc (7) provided with second perforations (8) is disposed at a short distance from , the diaphragm (3) and opposite the counterelectrode (1). In this arrangement the , first perforations (2) and the second perforations are also offset …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 12, 2006 and granted January 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.