Hearing aid assembly
CA 2469678 A1 · Owner: Bordewijk, Lourens George · Inventors: Bordewijk, Lourens George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
System comprising a CIC hearing aid that is constructed from a first universal part containing microphone, amplifier and loudspeaker and a second part that is adapted to the auditory canal of the patient. The hearing aid is of a digitally programmable design. The programming is carried out by way of a cable. Since a connection to the first part is not easy to make on account of lack of space, it is proposed according to the invention to use an auxiliary part that replaces the first part and is used for establishing the desired amplifier characteristics. The desired amplifier characteristics obtained in this way are transmitted to the first part to be used by the patient by means of …
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 December 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2024.
- 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.