Expired Canadian patentCanada
Reduced-protein subunit vaccine for swine dysentery
CA 2071955 C · Owner: Wannemuehler, Michael J. · Inventors: Wannemuehler, Michael J.; Ostle, Anthony G.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The effectiveness of parenteral vaccination of swine with Treponema hyodysenteriae preparations is increased by reducing the protein content of the Treponema hyodysenteriae cells and subcellular components in the vaccine.
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 2, 1990 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2012.
- 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 2, 1990
GrantedDecember 22, 1998
Term endedNovember 2, 2010
Patent numberCA 2071955 C
Classification (IPC)A61K39/02 +1 more
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.