An oral appliance
CA 2066242 C · Owner: Farrell, Christopher John · Inventors: Farrell, Christopher John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oral appliance (10) for repositioning the temporomandibular joint comprising a base portion (11) which is of generally U-shaped form to follow the jaw and teeth of a user and front and rear flanges (12 and 13) which define with the base portion (11) upper and lower channels (15 and 16) for receiving the teeth of the upper and lower jaws. The base portion is of asymmetrical form on either side of the appliance (10) from the leading to the trailing end thereof so as to substantially occupy uneven spacing between the upper and lower jaws of the user and cause the lower jaw to move into substantial alignment with the upper jaws.
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 September 6, 1990 and granted November 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2012.
- 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.