Patents by Inventor Steven R. Kain

Steven R. Kain 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 for purification of recombinant proteins
    Patent number: 6242581
    Abstract: Purification of poly-amino acid-tagged recombinant proteins has been improved by the use of a carboxymethylated aspartate ligand complexed with a third-block transition metal having an oxidation state of 2+ and a coordination number of 6. A method for synthesizing the metal ion-CM-Asp complex is also described. Further, the metal ion-CM-Asp complex can be used for screening protein function.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: June 5, 2001
    Assignee: Clontech Laboratories, Inc.
    Inventors: Paul S. Nelson, Te-Tuan Yang, Steven R. Kain, Thomas H. Smith
  • Method for purification of recombinant proteins
    Patent number: 5962641
    Abstract: Purification of poly-amino acid-tagged recombinant proteins has been improved by the use of a carboxymethylated aspartate ligand complexed with a third-block transition metal having an oxidation state of 2.sup.+ and a coordination number of 6. A method for synthesizing the metal ion-CM-Asp complex is also described. Further, the metal ion-CM-Asp complex can be used for screening protein function.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: October 5, 1999
    Assignee: CLONTECH Laboratories, Inc.
    Inventors: Paul S. Nelson, Te-Tuan Yang, Steven R. Kain