Isolation and purification of e. coli enterotoxin
CA 1053152 A · Owner: Sandoz Ltd. · Inventors: Schutze, Eberhard; Mayer, Peter; Dorner, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the purification of E. coli enterotoxin and the use of the purified material in vaccines for active immunisation and in the production of sera for passive protection against E. coli infections and for immunoprophylaxis against cholera.
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 April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 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.