Thermoplastic structural components and structures formed therefrom
CA 2097226 C · Owner: Royal Building Systems (Cdn) Limited · Inventors: Dezen, Vittorio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated extruded thermoplastic building component for use in the erection of a thermoplastic building structure said component, presenting spaced interlocking means extending the length thereof for sliding interlocking engagement with mating thermoplastic member and at least one, longitudinally extending web supporting said spaced interlocking means in spaced relation with said web having a plurality of openings cut therethrough inwardly of said interlocking means spaced along the length thereof. In its most common form the component is extruded with a core of reinforced thermoplastic material having a coextruded smooth skin covering exposed surfaces thereof and is rectilinear having …
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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 May 28, 1993 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2015.
- 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.