Patents by Inventor Suzanne Keller

Suzanne Keller 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 packing chromatographic beds
    Patent number: 4985143
    Abstract: Column chromatography beds are packed through the application of static force. A slurry of the chromatography bed material and a non-viscous liquid is filled into the column plugged at one end, and allowed to settle. The column is transferred to a centrifuge, and centrifuged for a brief period of time to achieve a predetermined packing level, at a range generally of 100-5,000 gravities. Thereafter, the plug is removed, other fixtures may be secured, and the liquid is allowed to flow out through the bed. This results in an evenly packed bed, with no channeling or preferential flow characteristics.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: January 15, 1991
    Assignee: The University of Maryland
    Inventors: David H. Freeman, Rosalie M. Angeles, Suzanne Keller