Medicated ear tag
CA 2032148 A1 · Owner: Mckeddie, David J. · Inventors: Mckeddie, David J.; Mckeddie, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ear tag for administering hormones or other medication to sheep or cattle comprising a pair of reservoirs (10) and a pair of wicks (12) each in communication with a reservoir and located either side of a recess (7) which recess is intended to receive part of an animal's ear; a barbed latch (5) adapted to hold the two wicks and reservoirs either side of an animal's ear and to pass through an animal's ear in order to secure the ear tag to the animal; the arrangement being such that medicated liquids may pass from the reservoir up the wicks and into the animal's bloodstream through the animal's ear which is held in the recess and in contact with the wicks.
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 April 30, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 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.