Didehydro vitamin d -derivatives
CA 1314906 C · Owner: F. Hoffmann-La Roche Ag · Inventors: Partridge, John Joseph; Uskokovic, Milan Radoje; Shiuey, Shian-Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The novel compounds of the formula I, wherein R1 is hydrogen or hydroxy and R2 is hydrogen or fluorine, ace useful as agents in the treatment of disease states characterized by metabolic calcium deficiencies particularly osteoporosis and renal osteodystrophy.
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
- Granted March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
- 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.