Expired Canadian patentCanada
Shoe construction having improved back part fit
CA 2059635 C · Owner: Rosen, Henri E. · Inventors: Rosen, Henri E.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A means which functions to improve the fit of shoes is described whereby the shoe is urged forward on the foot to , minimize slippage of the backpart of the shoe relative to the heel of the wearer's foot.
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 July 27, 1990 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 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.
FiledJuly 27, 1990
GrantedJuly 18, 2000
Term endedJuly 27, 2010
Patent numberCA 2059635 C
Classification (IPC)A43B23/28
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.