Skin cosmetic compositions for reducing skin irritation from weak carboxylic acids
CA 2382214 A1 · Owner: Unilever Plc · Inventors: Habif, Stephan Samuel; Mukherjee, Surajit; Rick, Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cosmetic skin compositions containing a weak carboxylic acid and a random copolymer of ethylene oxide and propylene oxide. The copolymer reduces skin irritation that is sometimes caused by the weak acid active without reducing delivery of weak acids to skin tissues. A method of reducing skin irritation that may be caused by the topical application of a weak carboxylic acid is also described.
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 July 31, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 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.