Method for purification of filamentous hemagglutinin
CA 1237998 A · Owner: Juridical Foundation The Chemo-Sero-Therapeutic · Inventors: Nishihara, Tsukasa; Tashiro, Tomitaka; Sakuma, Shin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention provides an improved method for the purification of filamentous hemagglutinin (F-HA) on an industrial scale which comprises contacting a culture of a microorganism of the genus Bordetella with a cellulose sulfate gel, a polysaccharide gel chemically bound with dextran sulfate, or a crosslinked polysaccharide sulfate gel, thereby adsorbing the F-HA on the gel and then, eluting the F-HA from the gel. The method can give a highly purified F-HA which does not contain any other proteins, lipids, saccharides, etc. and undesirable endotoxins, and hence can be used for producing various reagents, medicines and pertussis vaccine.
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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 June 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
- 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.