Topical compositions containing phosphorylated polyphenols
CA 2579784 C · Owner: Maes, Daniel · Inventors: Maes, Daniel; Van Brussel, Willy; Corstjens, Hugo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides topical compositions containing phosphorylated polyphenols in combination with a topically acceptable carrier. The compositions of the invention provide a means for delayed delivery of the polyphenol to keratinous tissues, such as skin hair and nails, with enzymes , of the keratinous tissue dephosphorylating the polyphenol and returning it to , its native active form. The compositions are particularly useful in the regulation of skin conditions.
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 September 14, 2004 and granted February 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2026.
- 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.