Expired Canadian patentCanada
Neurologic agents for nasal administration to the brain
CA 2070823 C · Owner: Chiron Corporation · Inventors: Frey, William H. Ii
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for transporting neurologic therapeutic and/or diagnostic neurologic agents to the brain by means of the olfactory neural pathway and a pharmaceutical composition useful in the treatment and diagnosis of brain disorders.
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 4, 1990 and granted January 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 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.
FiledDecember 4, 1990
GrantedJanuary 12, 1999
Term endedDecember 4, 2010
Patent numberCA 2070823 C
Classification (IPC)A61K9/72 +2 more
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.