Hollow section profile with a polyurethane foam reinforcement and method for producing the same
CA 2384500 A1 · Owner: Orywol, Peter · Inventors: Kreuer, Karl-Dieter; Orywol, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to hollow section profiles (1) with a polyurethane foam reinforcement (2). Said profiles are especially produced by applying a liquid reaction mixture (15) on a support material insert (3) while said support material insert (3), together with the reaction mixture (15) is drawn into , the hollow section profile (1) at a constant speed. The support material insert (3) used has a retarded permeability for the reaction mixture (15) the , retardation period lasting from the time of application of the reaction mixture (15) to the insertion of the hollow section profile (1) and the , support material insert (3) then turning permeable to the reaction mixture (15). 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 September 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2022.
- 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.