Hearing aid with rechargeable battery and rechargeable battery
CA 2594745 C · Owner: Poulsen, Henning Knak · Inventors: Poulsen, Henning Knak; Gudnason, Gunnar; Petersen, Anders Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rechargeable battery is provided comprising a flexible elongate electron conductive core (1) surrounded by a first electrochemically active layer (2) and a second electrochemically active layer (4) separated by a separation , layer (3) and where an electron conducting element (5) contacts the outer surface of the second electrochemically active layer whereby at least one of , the two electrochemically active layers (2 4) and the separation layer (3) , are comprised of thin-film layers. Further a hearing aid is provided wherein a battery comprising thin film layers is provided. Such a battery may be curled or wound to accommodate an irregular space inside the hearing aid.
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 January 12, 2006 and granted September 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 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.