Method for constructing virus-free plant
CA 2371889 A1 · Owner: Wakunaga Pharmaceutical Co. Ltd. · Inventors: Sumi, Shinichiro; Ayabe, Masanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vigorous cell division is under way in a dome-shaped tissue formed by culture in the basal part of a foliage leaf in a bulb or a tuber. Thus it is expected , that this tissue is free from viruses. A virus-free plant is obtained by isolating and culturing this dome-shaped tissue.
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 June 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 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.