Process for preparing alkyl polyglucosides
CA 2096308 C · Owner: Borsotti, Giampietro · Inventors: Nataloni, Luigi; Santini, Claudio; Pellizzon, Tullio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for preparing alkyl polyglucosides of general formula (I) H-(G)n-O-R by reacting, an alcohol with a reducing sugar or with an equivalent of the latter, in the presence of a binary catalyst formed by a strong organic acid and a weak, also organic base, having a, Ka comprised within the range of from 10-8 to 10-1.
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 May 14, 1993 and granted October 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2015.
- 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.