Preparation of a hepatitis b immune globulin and use thereof as a prophylactic material
CA 1069822 A · Owner: Ortho Diagnostic Systems Inc. · Inventors: Mckee, Albert; Pollack, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a novel immunizing agent is described. The immunizing agent is anti-HBS gamma globulin essentially free of fibrinogen plasminogen, 19 S globulin and lipids found to be effective in immunizing against hepatitis B virus disease. The method of producing this material involves fractionation of human plasma utilizing selective solvent and control of pH, temperature and ionic strength.
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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.