Vaccine for active immunization containing hepatitis b surface antigen and associated antigen
CA 1066190 A · Owner: Community Blood Council Of Greater New York · Inventors: Prince, Alfred M.; Neurath, Alexander R.; Vnek, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A vaccine against viral hepatitis comprising: A. Antigenic particles having a particle size in the range of 30 to 50 nanometers, said antigenic particles containing hepatitis B surface antigens;, B. Said antigen having less than 10 units of free antibody to hepatitis B surface antigens per 1,000 units of hepatitis B surface antigens;, C. At least 5% of the particles of said vaccine in the size range of 30 to 50 nanometers containing the hepatitis B surface antigenic specificity(s) which have been termed "e-antigen"; D. Said hepatitis B surface antigens, including e-antigens being present in said vaccine in an amount sufficient to produce antibodies when …
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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 November 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 1996.
- 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.