Immunoaffinity purification system
CA 1307752 C · Owner: Hopp, Thomas P. · Inventors: Prickett, Kathryn S.; Hopp, Thomas P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Immunoaffinity Purification System ABSTRACT, A process is disclosed for purifying a recombinant fusion protein having an N-terminal identification sequence comprising multiple anionic amino acid residues, comprising forming a complex of the protein with a divalent cation dependent monoclonal antibody specific for the sequence, isolating the complex and dissociating, antibody and protein by selectively depleting the concentration of divalent cations in contact with the complex. A particular calcium-dependent monoclonal antibody, 4E11 is useful in an, embodiment of the process which employs the identification peptide DYKDDDDK.
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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 September 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 2009.
- 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.