Oral vaccine against diarrhea
CA 2352309 A1 · Owner: Bjare, Ulf · Inventors: Askelof, Per; Bjare, Ulf; Carlin, Nils
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oral vaccine composition against enterotoxigenic E. coli caused diarrhea in humans is disclosed. It comprises a defined amount of at least three different types of colonization factor antigens (CFAs) e.g. 100 to 300 µg of each , type, selected from the group consisting of CFA I CFA II (CS1, CS2 and CS3) , and CFA IV (CS4 CS5 and CS6), on killed E. coli bacteria lacking the gene encoding the heat labile enterotoxin (LT-) together with a defined amount of , the B-subunit of cholera toxin (CTB) e.g. 0.5-2.0 mg, and a vehicle, such as PBS, which vaccine composition is purified from possible heat stable enterotoxin (ST).
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 9, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.