Vaccine preparations containing saponins
CA 2344336 A1 · Owner: Kiyohara, Hiroaki · Inventors: Nagai, Takayuki; Aizawa, Chikara; Yamada, Haruki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Adjuvants containing as the active ingredient saponins having a presenegenin skeleton as the mother nucleus and being substituted at the 28-position by an optionally substituted sugar residue; and vaccine preparations containing these adjuvants. For example, a sufficient immune stimulation activity can be exhibited even by transnasal vaccination by using a saponin having structure (I).
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 September 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2021.
- 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.