Patents by Inventor Robert A. Kosecki

Robert A. Kosecki 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 GM-CSF
    Patent number: 5391706
    Abstract: A method of purifying granulocyte-macrophage colony-stimulating factor (GM-CSF), particularly recombinant human GM-CSF, in good yield and with retention of biological activity, comprising sequential anion-exchange, dye-ligand affinity, gel filtration and reversed-phase chromatography is disclosed.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: February 21, 1995
    Assignee: Schering Plough Corporation
    Inventors: Paul P. Trotta, Gail F. Seelig, Robert A. Kosecki, Paul Reichert
  • Process for the purification of gamma interferon
    Patent number: 4751078
    Abstract: A process is disclosed for purifying gamma interferon from various contaminants resulting from disruption of the cell in which the interferon was produced. The process provides for sequential removal of (a) nucleic acids, (b) negatively charged contaminating proteins, (c) positively charged contaminating proteins and (d) low and high molecular weight impurities.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: June 14, 1988
    Inventors: Tattanahalli L. Nagabhushan, Paul P. Trotta, Hung V. Le, Gail F. Seelig, Robert A. Kosecki