Canadian application, no grantCanada
Continuous bioreactor process for the preparation of polyester cyclic oligomers
CA 2522409 A1 · Owner: E.I. Du Pont De Nemours And Company · Inventors: Brugel, Edward G.; Di Cosimo, Robert
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous process for the process for the enzyme-catalyzed preparation of cyclic ester oligomers from linear ester oligomers. The process may use a linear or recirculating reactor.
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 October 31, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 2003
GrantedNo grant recorded
Term endedOctober 31, 2023
Patent numberCA 2522409 A1
Classification (IPC)C08G63/18 +1 more
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.