Upper for an athletic shoe and method for manufacturing the same
CA 2107091 C · Owner: Legassie, Charles P. · Inventors: Foley, Peter M.; Legassie, Charles P.; Lacorazza, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is an upper (12) for an athletic shoe (10) which substantially takes the form of an inflatable chamber. The upper (12) is formed from first (40) and second (42) laminates which are welded (62) together at various locations to form several fluid impervious chambers (64). The chambers (64) which are visible, are inflated with fluid to provide lightweight support and comfort to the foot of the wearer.
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 August 17, 1992 and granted August 5, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2014.
- 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.