Defaunation method
CA 2115168 C · Owner: Hart, Frederick John · Inventors: Hart, Frederick John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of triazine compounds of formula (I) for the preparation of a medicament for use in a method for defaunation of ruminant animals, in which an effective amount of the compound is administered to the animals. Defaunation is the selective removal of protozoa from the rumen in preference to removal or deactivation of bacteria. In formula (I): x = 1 or 2 R = H or, lower alkyl, Ar = phenyl, diphenyl naphthyl, anthracyl or phenanthryl radicals and substituted derivatives thereof.
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 August 5, 1992 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2014.
- 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.