Expired Canadian patentCanada
Spray preparations for respiratory tract infections
CA 2009221 C · Owner: Bryce-Smith, Derek · Inventors: Bryce-Smith, Derek
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a simple cheap and, efficient cure for the common cold and comprises a, nasal spray of a dilute solution of substantially unchelated zinc ion, especially zinc sulphate and/or zinc chloride.
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 February 2, 1990 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 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.
FiledFebruary 2, 1990
GrantedOctober 17, 2000
Term endedFebruary 2, 2010
Patent numberCA 2009221 C
Classification (IPC)A61K33/30 +1 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.