Process for the preparation of melanotic pigments by bioconversion and cosmetic use of thereof
CA 2128226 A1 · Owner: Martin, Richard · Inventors: Junino, Alex; Hilaire, Pascal; Martin, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method for the preparation of a melanic pigment by enzymatic bioconversion implementing a melanin precursor substrate and plant cells characterized in that: (a) poppy (Papaver somniferum) plant cells previously cultivated are separated from their culture medium and subcultured in a culture medium with a concentration from 10 to 100 g/l; (b) the cells are ground at least partially before or at the end of the latency time (c) the at least partially ground cells are placed in a bioconversion medium in the presence with a melanin precursor substrate selected among indol indolin, dihydroxyphenylalanin, tyramin and tyrosin; (d) the precipitated melanic pigment …
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 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2015.
- 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.