Apparatus for detecting estrus in livestock
CA 2455890 A1 · Owner: Stampe, David A. · Inventors: Stampe, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An indicator for use in indicating when an animal is in estrus. The apparatus is configured to be affixed to the rump of an animal to detect and indicate when the animal has been mounted and, thus when the animal is in estrus. The , apparatus is affixed to the animal by an adhesive layer (14). Layered on the top surface of the adhesive layer (14) is an indicator layer (12) that is in turn covered with a floodcoat layer (16). The floodcoat layer (16) is adapted for removal upon the mounting of the first animal by a second animal. Removal of the floodcoat layer (16) exposes the indicator layer (12) indicating that the first animal has been mounted, thereby indicating that the first …
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 May 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 2024.
- 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.