Welted shoe
CA 2390423 A1 · Owner: Liu, Kun-Chung · Inventors: Liu, Kun-Chung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A welted shoe includes an insole disposed within an upper. A welt member underlies a lower peripheral edge portion of the upper and together with a peripheral portion of the insole to form a sandwiched structure which is fastened by uprightly extending fastening members such, as stitches and rivets, to form a sub-assembly. An outsole is molded with the sub-assembly to form an outsole body underlying the welt member and a central portion of the insole, and a surrounding seal wall extending uprightly to surround completely the welt member and sealingly abutting against the upper to provide a good waterproofing effect.
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 June 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2024.
- 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.