Solar screening assembly
CA 2030832 A1 · Owner: Kessel, Stephen L. · Inventors: Kessel, Stephen L.; Mont, George E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a solar screening assembly optionally heatable for defrosting/defogging/deicing which includes a plasticized polyvinyl butyral layer and a metal/dielectric stack comprising one or more lightreflecting metal layers and two or more antireflective layers, a cap layer Ta2O5 or SiOx where x ? 2 in, face-adhering contact with the plasticized polyvinyl butyral layer, such assembly when laminated with glass exhibiting pummel adhesion of at least 3 after at least 1000 hours exposure to UV radiation in a Fadeometer, Weatherometer or equivalent system.
Read the whole patent
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 November 26, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2012.
- 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.