Coated glass and method of manufacturing same
CA 2049442 C · Owner: Terneu, Robert · Inventors: Terneu, Robert; Hannotiau, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pyrolytic tin oxide coatings formed on soda-lime glass particularly those, formed from a tin chloride precursor suffer from haze at the glass/coating interface due, to the migration of sodium ions from the glass into the coating. Tin oxide coatings also, exhibit iridescence in certain thicknesses. In order to reduce iridescence and to provide a barrier against the incorporation of sodium into the tin oxide layer the glass is first provided , with an, undercoating layer of oxidised metal which contains aluminium with a minor proportion, of vanadium. The optical thickness of the undercoat is selected for the reduction of, reflected visible light interference effects due to the tin oxide …
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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 August 19, 1991 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2013.
- 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.