Improved process for the synthesis of alkylpolyglucosides
CA 2249753 C · Owner: Pellizzon, Tullio · Inventors: Meroni, Maria Luisa; Pellizzon, Tullio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1. Process for the synthesis of alkylpolyglucosides having general formula (I):, H-(G)n-O-R- (I) said process comprising the reaction of an alcohol with a monosaccharide or an equivalent thereof which can be an alkylglucoside or a compound capable of generating the monosaccharide "in situ", characterized in that said reaction is carried out in the presence of a catalyst consisting of a sterically hindered polyalkylarylsulfonic acid or a mixture of sterically hindered polyalkylarylsulfonic acids.
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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 October 27, 1998 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2020.
- 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.