Expired Canadian patentCanada
Method for establishing a binaural communication link and binaural hearing devices
CA 2407142 C · Owner: Phonak Ag · Inventors: Jakob, Andreas
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A binaural communication link between two hearing devices is established via at least one wire (7W) and a conductor which is formed by individual's body , (7B).
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 22, 2002 and granted July 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 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.
FiledJanuary 22, 2002
GrantedJuly 26, 2011
Term endedJanuary 22, 2022
Patent numberCA 2407142 C
Classification (IPC)H04R25/00 +1 more
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.