Synergistic compositions for extending animal feed shelf life
CA 2089920 C · Owner: Geo. Pfau'S Sons Company, Inc. · Inventors: Johnston, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combination of entirely natural antioxidants provides an unexpected synergistic effect in extending the shelf life of Animal-fat-containing feed when admixed with such fat or feed in amounts which are economically feasible. The specific antioxidants are lecithin, tocopherol and oil of rosemary. All combinations of at least two of these in amounts of from 0.01 to 2.0 percent by weight of lecithin, from 0.0035 to 0.056 percent by weight of tocopherol and from 0.01 to 0.10 percent by weight of oil of rosemary (based on the combined weight of antioxidant and animal fat) inordinately extend the shelf life of animal feed in general and of pet food in particular, when such products contain …
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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 19, 1993 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.