Compositions comprising vitamin d precursors, analogs thereof and their use
CA 2085632 A1 · Owner: Tian, Xiao Quan · Inventors: Lu, Zhiren; Holick, Michael F.; Tian, Xiao Quan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for providing active-type vitamin D compounds to an individual are disclosed. The individuals are exposed to sunlight to produce vitamin D and analogs or derivatives thereof via the skin. Pharmaceutical compositions comprising lumisterol and/or tachysterol and analogs or derivatives thereof are also disclosed.
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 December 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2014.
- 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.