Orthosis for footwear with positional self-adjustment
CA 2358669 C · Owner: Perrault, Ronald · Inventors: Perrault, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The orthosis is formed of a monolithic semi-rigid resilient shell and is engaged inside a footwear to conformingly fit against the plantar portion of a person's foot extending from the anterior metatarsal region to the heel portion. The rear end portion of the orthosis has inner and outer rearwardly-extending resiliently deformable arms defining a rearwardly-opened notch therebetween for partial engagement of the heel in the notch. Upwardly arcuate inner and outer flanges are provided respectively on the inner and outer arms opposite the notch, for forming a cup-like seat for the heel. The front end portion of the orthosis engages the metatarsal plantar region of the foot and has a sinuous …
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 October 9, 2001 and granted September 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2023.
- 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.