Glycosphingolipids with a group capable of coupling in the sphingoid portion, the preparation and use thereof
CA 2003662 C · Owner: Behringwerke Aktiengesellschaft · Inventors: Bosslet, Silke; Wiegand, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the chemical modification of the sphingoid portions of glycosphingolipids. It has been possible by a series of reactions to introduce an amino group in the position of the carbon double-bond in the sphingoid portion after elimination of the long-chain aldehyde. Glycosphingolipids of the formula (2) and (3) where X and Y denote a group capable of coupling are, suitable for coupling to other molecules preferably, proteins. X preferably represents NH2 and Y preferably
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 November 24, 1989 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
- 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.