Animal euthanasia
CA 1069433 A · Owner: Universities Federation For Animal Welfare · Inventors: Scott, Walter N.; Macarthur, Judy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of euthanasia for small animals particularly, cats, involving inducing hypoxia using a mixture of carbon dioxide and oxygen prior to gassing with carbon dioxide. The initial mixture contains not less than 40% carbon dioxide and not more than 50% oxygen. The apparatus consists of a double chamber with valved gas supplies to the separate chambers.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.