Patents Assigned to Jeanette Simpson
  • Cell separation process
    Patent number: 4927750
    Abstract: Cell separation compositions and associated methods effective for separating cells from various biological specimens such as blood are disclosed. The biological specimens are contacted with the cell separation compositions and centrifuged. The cells are separated based upon their buoyant density in the cell separation composition. The cell separation composition contains colloidal silica particles covalently linked to an organosilane having a non-ionic, hydrophilic group.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: May 22, 1990
    Assignee: Jeanette Simpson
    Inventor: Allan R. Dorn
  • Reagent for cell separation
    Patent number: 4927749
    Abstract: Cell separation compositions and associated methods effective for separating cells from various biological specimens such as blood are disclosed. The biological specimens are contacted with the cell separation compositions and centrifuged. The cells are separated based upon their buoyant density in the cell separation composition. The cell separation composition contains colloidal silica particles covalently linked to an organosilane having a non-ionic, hydrophilic group.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: May 22, 1990
    Assignee: Jeanette Simpson
    Inventor: Allan R. Dorn