Improved vapor-permeable shoe
CA 2705035 C · Owner: Nottington Holding B.V. · Inventors: Polegato, Mario
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vapor-permeable shoe comprising the following combination of elements: a vapor-permeable upper (11) associated with a vapor-permeable or perforated lining (12); a tread sole (13) made of perforated elastomer; a mid-sole comprising at least one membrane (15) made of waterproof and vapor-permeable material associated with a lower protective layer (16) made of a material resistant to hydrolysis the layer being water-repellent, vapor-permeable and/or perforated; a vapor-permeable or perforated insole (17); a vapor-permeable or perforated filler (19) layer arranged between said insole and said membrane. The membrane is associated and sealed at its edge regions, to a pre-molded insert (14) …
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 April 29, 1998 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2020.
- 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.