Expired Canadian patentCanada
Viruses comprising mutant ion channel protein
CA 2406180 C · Owner: Kawaoka, Yoshihiro · Inventors: Kawaoka, Yoshihiro
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 method to prepare viruses lacking ion channel activity is provided. Such viruses are , useful, for example, in vaccines as a result of the attenuated phenotype in vivo.
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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 April 12, 2001 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 12, 2001
GrantedMay 28, 2013
Term endedApril 12, 2021
Patent numberCA 2406180 C
Classification (IPC)C12N7/01 +2 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.