Synthetic polysaccharides, method for preparing same and pharmaceutical compositions containing said polysaccharides
CA 2258146 C · Owner: Petitou, Maurice · Inventors: Jaurand, Guy; Petitou, Maurice; Herbert, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Synthetic polysaccharides containing 8-24 monosaccharide units made up of a concatenation of disaccharides consisting of a uronic acid and a hexose wherein all of the hydroxyl groups of the polysaccharides are etherified with a C1-6 alkyl group or esterified in the form of a sulpho group each disaccharide being at least monoetherified; and salts thereof are disclosed.
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 June 11, 1997 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2019.
- 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.