Process for reducing ligand leakage from affinity chromatography matrices
CA 2462668 A1 · Owner: Holzer, Margit · Inventors: Holzer, Margit; Halmer, Lothar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for (pre)treating affinity chromatography matrices, preferably protein A matrices comprising at least one surface , active substance for reducing ligand leakage. Treating the affinity chromatography matrix according to the invention makes it possible to obtain a constant quality of the affinity chromatography matrix thereby representing an important requirement for the suitability/use in biopharmaceutical processes. The invention also relates to methods for determining the ligand leakage.
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 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2024.
- 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.