Hepatitis b surface antigen formed by recombinant dna techniques, vaccines, diagnostics, cell lines and method of forming same
CA 1340934 C · Owner: Endotronics, Inc. · Inventors: Rohrbaugh, Mark L.; Thoma, Hans; Salstrom, John S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bacterial plasmids carrying the , PreS1-PreS2-S protein coding region but lacking, sequences encoding the hepatitis B core antigen are, used for transfection of eukaryotic cell lines for production of particles containing polypeptides encoded by the PreS1-PreS2-S protein coding region.
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 March 28, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2017.
- 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.