Expired Canadian patentCanada
Composition and method
CA 2466286 C · Owner: Yu, Shiguang · Inventors: Yu, Shiguang; Nachreiner, Raymond; Wedekind, Karen J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition which comprises about 0.1 to about 4.5 mg selenium/kg of diet on a dry matter basis.
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 November 6, 2002 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.
FiledNovember 6, 2002
GrantedJanuary 3, 2012
Term endedNovember 6, 2022
Patent numberCA 2466286 C
Classification (IPC)A61K33/04
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.