Hearing aid with adaptive feedback suppression
CA 2643716 C · Owner: Klinkby, Kristian Tjalfe · Inventors: Klinkby, Kristian Tjalfe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hearing aid comprises an input transducer (2) for deriving an electrical input signal from an acoustic input a signal processor (3) for generating an electric output signal an output transducer (4) for transforming the electrical output signal into an acoustic output an adaptive estimation filter (5) for generating a feedback estimation signal at least one first adaptive narrow-band filter (8) for narrow-band-filtering an input signal of the signal processor (3) at least one second adaptive narrow-band filter (9) for narrow-band-filtering a reference signal corresponding to an input signal of the adaptive estimation filter (5) and an adaptation mechanism (6) for updating the filter …
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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 March 9, 2006 and granted September 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 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.