Diphosphonic acid derivatives, processes for the preparation thereofand pharmaceutical compositions containing them
CA 1296739 C · Owner: Bosies, Elmar · Inventors: Bosies, Elmar; Gall, Rudi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Diphosphonates of the general formula: ( I ), wherein R1 is methyl or n-propyl; R2 is isobutyl pentyl, nonyl or benzyl; as well as the pharmacologically acceptable salts thereof, may be used in the treatment or prophylaxis of disturbance or diseases of the calcium metabolism.
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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
- 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.