Hearing aid headset having an array of microphones
CA 2178453 C · Owner: Zurek, Patrick M. · Inventors: Zurek, Patrick M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hearing aid has a plurality of microphones mounted in an array on a headband which extends from one ear over the top of the head to the other ear. The headband is flexible and adjustable in length. The headband has circuitry that can be switched among a directional monaural mode a, binaural mode, and a combination mode that provides both directionality and binaurally. Ganged controls are provided on the headband for both tone and volume. An external jack is provided on the headband to allow for the introduction of radio or recorded music from a personal stereo.
Read the whole patent
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 June 6, 1996 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2018.
- 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.