Treatment and compounds
CA 2012686 C · Owner: Maschler, Harald · Inventors: Spicer, Barbara A.; Maschler, Harald; Smith, Harry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the treatment of cerebrovascular disorders and/or disorders associated with cerebral senility and/or other disorders which method comprises the administration of an effective, non-toxic amount of a compound of formula (I):, or if appropriate a pharmaceutically acceptable salt thereof, wherein R1 and R2 each independently represent alkyl or a moiety of formula (a):, -(CH2)m -A (a) wherein m represents zero or an integer 1 2 or 3;, A represents a substituted or unsubstituted cyclic hydrocarbon radical; and, R3 represents a halogen atom a nitro group, or a group, -NR4R5 wherein R4 and R5 each independently represents hydrogen, alkyl or alkylcarbonyl or R4 and R5 together with the …
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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 March 21, 1990 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2012.
- 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.