A process for producing metal carboxylates for use as animal feed supplements
CA 2201300 C · Owner: Nelson, Christopher E. · Inventors: Nelson, Christopher E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing divalent metal carboxylates having the formula: M(CH3(CH2)xCOO-)2, wherein M is the divalent metal cation zinc (Zn+2) or , copper (Cu+2) and x is zero or 1 is disclosed. In this process an anhydrous , C2-C3 carboxylic acid is admixed with a basic divalent metal compound that is an oxide, hydroxide or carbonate of Zn+2 or Cu+2 in the absence of added solvent or other diluent. The divalent metal carboxylate so produced is used as a biologically available and economical source of trace metals for supplementation in animal diets.
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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 September 29, 1995 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2017.
- 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.