A product removal process for use in a biofermentation system
CA 2441774 A1 · Owner: E.I. Du Pont De Nemours And Company · Inventors: Wilkins, Antoinette E.; Lowe, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a bioprocess engineering solution for a product removal process for use in a biofermentation. The invention discloses a process for withdrawing an aliquot of broth from a biofermentation vessel during at least a portion of the biofermentation removing biocatalyst and , water, chromatographically separating biofermentation products from the withdrawn broth using water as an eluent and returning the remaining , components of the broth back to the biofermentation vessel. Process chromatography permits highly selective separation of the target molecule preventing feedback inhibition of the biofermentation.
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 April 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 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.