Roofing composition and method of applying the composition to a roof
CA 2092324 A1 · Owner: Polymer Science Corporation · Inventors: Urbanek, Thomas Wilhelm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Roofing Composition and Method of Applying the Composition to a Roof, INVENTOR: Thomas Wilhelm Urbanek ABSTRACT OF THE DISCLOSURE, A new roofing composition provides for the application of an acrylic polymer to a hot or cold asphaltic layer. The acrylic polymer is provided with barrier characteristics that resist the movement of mobile phases into the shield layer. The barrier characteristics are provided by ensuring that the polymer include a minor (preferably less than 5%) amount of metal complexes. The polymer should be present in an amount sufficient to ensure that it can form a continuous film on application to the base asphaltic layer. Pigment volume concentration should not be …
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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 March 18, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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
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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.