Liquid distribution shoe
CA 2092936 A1 · Owner: Pereira, Kenneth · Inventors: Pereira, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This plan, has inside its sole structure tubings which carry themselves horizontally from the heel throught the midsole to the toe wrap; inside these tubings you will find, liquid or gel inserts which can run freely and adapt themselves to any running motion and will generate more energy return on foot impact.
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 March 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2015.
- 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.