Patents by Inventor John Sjoquist

John Sjoquist has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing and isolating IGG-binding protein a fusion peptides and a vector therefor
    Patent number: 5100788
    Abstract: A method of producing and selectively isolating a desired protein or polypeptide or derivative thereof by constructing a recombinant vector comprising a DNA sequence coding for said desired protein or polypeptide operatively linked to a DNA sequence coding for protein A or an active polypeptide fragment thereof or any other macromolecule capable of binding to the constant regions of immunoglobulins, such that said DNA sequences together code for an IgG-binding fusion product between said desired protein or polypeptide and said protein A, active polypeptide fragment thereof or macromolecule; transforming a compatible host with said recombinant vector such that the combined DNA sequences coding for said fusion protein or polypeptide can be expressed by the host, and culturing the transformed host in a suitable growth medium to produce said fusion protein or polypeptide; selectively isolating said fusion protein or polypeptide by adsorption to an IgG-supporting carrier material; and optionally desorbing said fus
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: March 31, 1992
    Assignee: Pharmacia LKB Biotechnology AB
    Inventors: Sven Lofdahl, Mathias Uhlen, Martin Lindberg, John Sjoquist