Methods and compositions containing vitamin d compounds for improvement of skin conditions
CA 2049729 C · Owner: Deluca, Hector Floyd · Inventors: Smith, Connie Marie; Deluca, Hector Floyd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions containing vitamin D compounds in a suitable carrier and methods employing such compositions are disclosed for cosmetic uses in the treatment of various skin conditions such as lack of adequate skin firmness wrinkles, lack of dermal, hydration and insufficient sebum secretion. Various formulations of the compositions including creams, lotions and ointments are disclosed for use topically orally or, parenterally in accordance with this invention.
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 August 22, 1991 and granted October 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2013.
- 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.