Patents by Inventor K. Robert Hollister

K. Robert Hollister 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).

  • MR imaging compositions and methods
    Patent number: 5756688
    Abstract: This invention provides compositions useful in MR imaging comprising a polymer comprising units comprising the residue of a chelating agent linked to a poly(alkylene oxide) moiety, the polymer having a paramagetic metal ion associated therewith.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: May 26, 1998
    Assignee: Sterling Winthrop Inc.
    Inventors: Robert A. Snow, David L. Ladd, John L. Toner, K. Robert Hollister
  • 2-acetyl-6-cyanopyridines and their use as intermediates in the synthesis of oligo-2,6-pyridines
    Patent number: 5539117
    Abstract: The present invention is directed to 2-acetyl-6-cyanopyridine compounds that are useful as intermediates in the synthesis of oligo-2,6-pyridines. The present invention is also directed to new, simpler, less expensive methods for synthesizing such oligopyridines using the novel 2-acetyl-6-cyanopyridine compounds as intermediates.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: July 23, 1996
    Inventors: Robert A. Snow, Daniel J. Delecki, Chandra R. Shah, K. Robert Hollister
  • 2-acetyl-6-cyanopyridines and their use as intermediates in the synthesis of oligo-2,6-pyridines
    Patent number: 5350696
    Abstract: The present invention is directed to 2-acetyl-6-cyanopyridine compounds that are useful as intermediates in the synthesis of oligo-2,6-pyridines. The present invention is also directed to new, simpler, less expensive methods for synthesizing such oligopyridines using the novel 2-acetyl-6-cyanopyridine compounds as intermediates.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: September 27, 1994
    Assignee: Sterling Winthrop, Inc.
    Inventors: Robert A. Snow, Daniel J. Delecki, Chandra R. Shah, K. Robert Hollister