Adaptation of virus to vertebrate cells
CA 2365415 A1 · Owner: Walter Reed Army Institute Of Research · Inventors: Eckels, Kenneth H.; Innis, Bruce L.; Putnak, Joseph R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for replicating virus to high titer in cultured mammalian cells by infecting the mammalian cells with the high titer virus strain to obtain infected cells, specifically attenuated dengue virus , strains of serotype 1 2, 3, and 4. The resulting replicated virus is suitable for use in vaccines and vaccination methods which are also provided by the invention.
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 March 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2022.
- 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.