Plastic foot support with reinforcing struts
CA 1231525 A · Owner: Castellanos, Rigoberto · Inventors: Castellanos, Rigoberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Foot supports for use in footwear are molded in polypropylene sheet and include a network of longitudinal and transverse reinforcing ribs integrally molded with the support and extending across an arch-supporting area thereof, the ribs resisting stresses on the support during wear and maintaining the shape of the support without adversely affecting its resilience. The supports can be shaped to an individual's foot by heating in boiling water.
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
- Granted January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
- 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.