An earplug for a hearing aid
CA 2598819 C · Owner: Widex A/S · Inventors: Espersen, Christian Bohl; Olsen, Jorgen Mejner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An earplug (7) for a hearing aid (1), in particular for a BTE-type hearing aid. The earplug (7) has a front end (8) and a rear end (9) . The front end (8 ) is adapted to be inserted into án ear canal of a wearer. The earplug (7) comprises a main body part (10) comprising a longitudinal bore (11) extending along a centrally arranged axis (A-A) of the earplug (7) and at least one , sound output passage (17) in communication with said longitudinal bore (11) and leading to a sound output opening (18). The earplug also has a collar (19), which is adapted to engage the wall of an ear canal and surrounds the main body part (10). The output opening (18) has at least one edge part (18a) …
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 March 10, 2005 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2025.
- 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.