Implantable device for treatment of tinnitus
CA 2280059 C · Owner: Cochlear Limited · Inventors: Leysieffer, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An implantable device for treatment of tinnitus is provided comprising an electronic signal, generation unit and a power source for supplying power. A hermetically gastight, biocompatible, and implantable electroacoustic transducer is also provided as the sounddelivering output, transducer which, after an at least partial mastoidectomy can be positioned , in the mastoid cavity such that the sound emitted from the electroacoustic transducer travels from the mastoid to the, tympanic cavity via the natural passage of the aditus ad antrum.
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 August 11, 1999 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2021.
- 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.