Viral vaccine
CA 1332919 C · Owner: Beecham Inc. · Inventors: Draayer, Hans; Bordt, Dale
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sterile pharmaceutical compositions for use in therapy especially inactivated vaccines for use in prophylaxis are prepared by inactivating a live virus or bacterium with ascorbic acid and/or a salt thereof in the presence of oxygen and a source of heavy metal ions. Methods of treating animals including humans, with, such compositions are also disclosed.
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
- Granted November 8, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 8, 2011.
- 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.