Method for the production of a thin glassy coating on substrates in order to reduce gas permeation
CA 2616597 C · Owner: Prager, Lutz · Inventors: Mehnert, Rainer; Buchmeiser, Michael R.; Osterod, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for producing a glassy transparent coating on a , substrate by coating the substrate with a solution containing a) a polysilazane of formula -(SiR'R"-NR'")nwherein R', R", R"' are identical or different and independently represent hydrogen or an optionally substituted alkyl radical aryl radical, vinyl radical, or (trialkoxysilyl)alkyl radical n being an , integer or being calculated such that the polysilazane has a number-average molecular weight ranging from 150 to 150,000 g/mol and b) a catalyst in an organic solvent and then removing the solvent using , evaporation such that a polysilazane layer having a thickness of 0.05 to 3.0 µm remains on the substrate and …
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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 July 8, 2006 and granted March 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.