Process of producing carotenoid pigments
CA 2381822 C · Owner: Nippon Mitsubishi Oil Corporation · Inventors: Tsubokura, Akira; Mizuta, Haruyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for changing production ratios of carotenoid , compounds in a process of microbiological production of a plurality of carotenoid , compounds. By controlling the concentration of dissolved oxygen in the culture during , cultivation, production ratios of carotenoid compounds such as astaxanthin adonixanthin, .beta.-carotene, echinenone canthaxanthin, zeaxanthin, .beta.-cryptoxanthin 3-hydroxyechinenone, asteroidenone and adonirubin are changed.
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 June 8, 2001 and granted October 23, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2023.
- 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.