Purification of pertussis antigens
CA 1280693 C · Owner: Public Health Laboratory Service Board · Inventors: Robinson, Andrew; Irons, Laurence Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for the production of lymphocytosis promoting factor (LPF), filamentous haemagglutinin (FHA) and at least one fimbrial agglutinogen from a liquidculture of Bordetella pertussis, which comprises the steps of (a) separating the culture into cellular and supernatant fractions (b) concentrating the, supernatant fraction (c) fractionating the concentrated supernatant fraction to isolate LPF and FHA containing fractions and (d), isolating at least one fimbrial agglutinogen from the cellular fraction. A vaccine composition may be produced by mixing so-produced LPF, FHA and fimbrial agglutinogens produced.
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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
- Granted February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
- 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.