Thermostable varicella zoster virus
CA 2177060 A1 · Owner: Wadsworth, Cathy Warren · Inventors: Wadsworth, Cathy Warren; Provost, Philip J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermostable varicella zoster virus (tVZV) is useful for the preparation of a vaccine against chickenpox. The tVZV was selected from a population of virus which survived stringent heat inactivation conditions. The surviving virus is used to provide seed virus to produce a new vaccine with enhanced stability.
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 December 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2016.
- 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.