Purification of oligonucleotides
CA 2398749 A1 · Owner: Krotz, Achim H. · Inventors: Krotz, Achim H.; Ravikumar, Vasulinga T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and compounds useful for the purification of oligonucleotides and their analogs are provided wherein the oligonucleotides are contaminated with at least one oligonucleotide having at least one abasic site by the formation of imines at the aldehyde moiety of the abasic site and subsequent separation based on extractions, precipitations or chromatography.
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 January 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2023.
- 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.