Flavorful zinc compositions for oral use incorporating copper
CA 2217768 C · Owner: Godfrey, John C. · Inventors: Godfrey, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions for oral use containing a zinc compound, a copper compound, an amino acid and a base material are described. The compositions provide for slow release of zinc ions upon dissolution in the mouth to thereby achieve beneficial therapeutic effects from the zinc ions. The amino acid is selected to provide the composition with a palatable taste and no after-taste. The copper compound provides copper ions which serve to counterbalance a large intake of zinc as is present upon prolonged oral use of the composition.
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 October 8, 1997 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2019.
- 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.