Selective process for the deacylation of acylated compounds
CA 2201729 C · Owner: De Pater, Robertus Mattheus · Inventors: De Pater, Robertus Mattheus; Sibeyn, Mieke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a simple and selective method for the deacylation of 4acylated statins during the preparation of statins from a fermentation broth more specifically a reduction of impurities from the process by increasing , the pH of the fermentation broth.
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 August 5, 1996 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2018.
- 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.