Manufacture of abrasion resistant composite extrusions
CA 2454424 A1 · Owner: Yu, Zuoxing · Inventors: Pauli, Tim; Yu, Zuoxing
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for forming a composite extrusion for use as a glass run channel in an automobile and the products formed thereby are disclosed in which a main body member (2) is formed from an elastomeric thermoset rubber and an abrasion resistant layer (4) comprised of a crosslinkable thermoplastic or a high ethylene content EPDM rubber extruded thereon. The crosslinkable thermoplastic may be a moisture crosslinkable polyethylene containing grafted silane functional groups. The abrasion resistant layer (4) may be extruded onto the thermoset either prior to or after the thermoset (2) is cured and either prior to or after the abrasion resistant layer (4) is crosslinked. The material of the …
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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 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 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.