Method for industrially producing a japanese encephalitis vaccine, and resulting vaccine
CA 2228128 C · Owner: Fanget, Bernard · Inventors: Heimendinger, Pierre; Francon, Alain; Fanget, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for industrially producing a Japanese encephalitis vaccine wherein (a) cells from a cell line are cultured (b) the resulting cell culture is inoculated with a Japanese encephalitis virus in the presence of a viral growth medium (c) the virus is propagated and multiplied on the cells (d) the viral growth medium is recovered in the form of a suspension of viruses produced by the cells (e) the virus suspension is purified in at least one ion exchange chromatography step and a gel permeation step and (f) the virus suspension is formulated and converted into a pharmaceutical form to preserve it until the moment of use. A Japanese encephalitis vaccine characterised in that …
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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 July 29, 1996 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2018.
- 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.