High purity organofunctional alkyldialkoxysilanes through inverse addition
CA 2396231 A1 · Owner: Westmeyer, Mark D. · Inventors: Filipkowski, Michelle A.; Schilling, Curtis L. Jr.; Petty, Herbert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for preparing high purity organofunctional alkyldialkoxysilanes by reacting hydroalkyldialkoxysilanes with olefines wherein formation of undesired close-boiling by-products by an alkyl/alkoxy group exchange reaction is minimized through inverse addition meaning mixing , first Silane and Catalyst and then adding the olefin component thereto.
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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 December 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2022.
- 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.