Patents by Inventor Ping Sze

Ping Sze 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).

  • Purification of proteins employing CTAP-III fusions
    Patent number: 5179196
    Abstract: The present invention provides a process for the recovery of heterologous proteins from CTAP-III fusion proteins comprising expressing a fusion protein having a first amino acid sequence, a second amino acid sequence, and a selectable site which may be cleaved to provide first and second polypeptide fragments, respectively, wherein the first amino acid fragment is homologous to CTAP-III, and the first and second fragments have different pI values; cleaving the fusion protein to provide the first and second fragments; and separating the first and second fragments by ion exchange chromatography.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: January 12, 1993
    Assignee: SRI International
    Inventors: Paul H. Johnson, Ping Sze, Richard C. Winant, Jerome B. Lazar