Production of isoprenoid in recombinant yeast
CA 2831321 C · Owner: Dvc, Inc. D/B/A Bio-Technical Resources · Inventors: Mcmullin, Thomas W.; Millis, James R.; Saucy, Gabriel G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method of producing .alpha.-tocopherol and .alpha.-tocopheryl esters and a method of producing vitamin A or .beta.-carotene. The methods comprise using a biological system to produce farnesol or geranylgeraniol. Then the farnesol or geranylgeraniol is chemically converted into .alpha.-tocopherol an .alpha.-tocopheryl ester, vitamin A or .beta. carotene
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 July 6, 1999 and granted May 15, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2021.
- 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.