Hydroxyacids for topical treatment of wrinkles and skin changes associated with aging
CA 1340120 C · Owner: Yu, Ruey J. · Inventors: Yu, Ruey J.; Van Scott, Eugene J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots wrinkles and, keratoses removing agents: vitamins; aloes; sun screens; tanning depigmenting and shampooing agents; antiyeasts; antifungal antibacterial and antiviral agents; topical bronchial dilators and topical …
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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
- Granted November 10, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 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.