Improved shoe sole provided with retractable anti-slipping means
CA 2504767 C · Owner: Brasca, Alfredo · Inventors: Biancucci, Demetrio; Brasca, Alfredo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sole (6) for anti-slipping shoes of the type comprising foldaway antislipping means (12) arranged in the face of the sole that will come in touch with the ground, characterized in that said anti-slipping means to increase the adherence to the ground are secured to rigid or semirigid supporting members (10) that are hinged to the sole so as to be lifted from the same by rotation like a flag by at least 180~ with respect to a symmetry axis other than the axis of hinge/lifting from the shoe sole and not parallel thereto. Each said supporting member being housed during the use of the sole in its own single recess or groove (8) arranged in the sole portions.
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 November 4, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2025.
- 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.