Sustained release bolus effective for the prolonged prevention, treatment or control of nematode, acarid and endo- and ectoparasitic infestations of ruminants
CA 2010934 C · Owner: Dietz, Joseph Charles · Inventors: Wood, Irwin Boyden; Toothill, Richard Boardman; Dietz, Joseph Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sustained release bolus composition, containing a prophylactically effective amount of a compound selected from LL-F28249.alpha. 23-(O-methyloxime)- LL-F28249.alpha. and derivatives thereof provides a method for protecting ruminant animals for a prolonged period of time against infestation by nematodes acarids and, endo- and ectoparasitic insects and which over time, can also eliminate the initial population of parasites present at treatment. The invention also relates to a method for the systemic control of ectoparasitic insect infestations of ruminant animals by orally administering to said animals a sustained release bolus containing an insecticidally effective amount of …
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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 February 26, 1990 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 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
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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.