Shoe-lining
CA 2021985 C · Owner: Pehr, Ernst · Inventors: Fehlhaber, Juergen; Groitzsch, Dieter; Pehr, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a shoe lining including two to three layers of fleece which are spot-welded together, at least the layer adjacent the foot includes synthetic fibres and is connected, on the side remote from the foot with a layer, including at least 30 to 70% per weight of cellulose fibres. Such a shoe-lining is highly wear resistant and feels dry even after the shoe has been worn for an extended period.
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 26, 1990 and granted June 25, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.
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.