Method of preparing arabinonucleotides
CA 2172817 A1 · Owner: Schering Aktiengesellschaft · Inventors: Kennecke, Mario; Hummel-Marquardt, Heidi; Weber, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of arabinonucleotides of general formula I, (I), in which, X represents a hydrogen atom or a fluorine atom is, described, which is characterized in that an arabinonucleoside of general formula II (II), in which X has the above-mentioned meaning is, fermented in the presence of an aryl phosphate of general formula III, (III), in which, Y symbolizes a hydrogen atom or a nitro group and Z symbolizes two hydrogen atoms or two alkali metal atoms, with a microorganism that is capable of phosphorylating nucleosides.
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 September 6, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2016.
- 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.