Moisture crosslinkable thermoplastics in the manufacture of vehicle weather strips
CA 2455733 A1 · Owner: Cooper-Standard Automotive Inc. · Inventors: Yu, Zuoxing; Pauli, Tim; Graf, Hans-Joachim
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 vehicle weather strip and the products formed thereby are disclosed in which a main body member (2) is formed from an elastomeric thermost rubber and an abrasion resistant decorative layer (4) comprised of a crosslinkable thermoplastic is extruded thereon. The crosslinkable thermoplastic may be an ethylene-octene copolymer or a copolymerized ethylene-styrene interpolymer. The thermoplastic contains grafted silane functional groups to allow the thermoplastic to be crosslinked in the presence of moisture. The abrasion resistant decorative layer may be extruded onto the thermoset either prior to or after the thermoset is cured and …
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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 23, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 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.