Stable personal care compositions containing a retinoid
CA 2477032 A1 · Owner: Smith, Shane Christian · Inventors: Resch, Bradley Steven; O'Donoghue, Margaret Ann; Smith, Shane Christian
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 topical skin care compositions having improved stability containing a retinoid and a non-paraben preservative and being substantially free of paraben preservatives. Preferred non-paraben preservatives include phenols, phenol salts carboxylic acids, carboxylic acid , salts quaternium ammonium compounds, halogens halogen salts, alcohols, inorganic salts heterocyclic compounds, emulsifying preservatives and , mixtures thereof. The present invention also relates to methods of using such compositions to regulate the condition of skin and/or hair.
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 27, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2025.
- 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.