Treatment of acne using lipoic acid
CA 2362453 A1 · Owner: Perricone, Nicholas V. · Inventors: Perricone, Nicholas V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Active acne and acneiform scars are treated by topical application of a composition containing lipoic acid and/or a lipoic acid derivative such as dihydrolipoic acid, a lipoic or dihydrolipoic acid ester a lipoic or , dihydrolipoic acid amide a lipoic or dihydrolipoic acid salt, and mixtures of any of these to reduce erythema, pore size and scarring. Topical application , of lipoic acid and/or a lipoic acid derivative are advantageously used with at least one adjunct ingredient such as a retinoid an antibiotic, or benzoyl , peroxide conventionally used for acne alone or in combination with , dimethylaminoalcohol an .alpha.-hydroxy acid such as glycolic acid a , tyrosine, tocotrienol, …
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 January 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 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.