Recombinant production of carotenoids, particularly astaxanthin
CA 2324625 C · Owner: F. Hoffmann-La Roche Ag · Inventors: Setoguchi, Yutaka; Ojima, Kazuyuki; Hoshino, Tatsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a process for producing carotenoids comprising cultivating a recombinant organism having a gene for one or more active oxygen species-quenching factor(s) that is substantially disrupted with a disruption cassette specific to the gene and recovering carotenoids from the culture as well as to genetic materials useful in the said process such as a recombinant organism producible of carotenoids a disruption cassette, a recombinant DNA sequence a recombinant DNA fragment; and a polynucleotide.
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 27, 2000 and granted September 27, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2022.
- 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.