Cosmetic compositions
CA 2362354 A1 · Owner: Bell, Michael David · Inventors: Elliott, Russell Philip; Rolls, Richard George Albert; Bell, Michael David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A leave-on cosmetic composition suitable for topical application to the skin comprising: a) from about 1 % to about 20 % of a Vitamin B3 compound or , mixtures thereof and; b) a cation containing polymer selected from ampholytic amphoteric, basic, zwitterionic and cationic polymers or mixtures thereof wherein the cationic polymers are selected from cationic polysaccharides or derivatives thereof, cationic homo or copolymers of dimethyldiallylamonium chloride, cationic copolymers comprising vinylpyrrolidone; cationic copolymers comprising acrylic acid or derivatives thereof N,N,N-trimethyl-2-(2-methyl-1-, oxo-2-propenyl)oxychloride, Polyquaternium-2, quaternised chitosan or , mixtures …
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 February 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 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.