Patents Assigned to The United States of America as represented by the Departent of Health and Human Services
  • Method for concentrating a solute by countercurrent chromatography
    Patent number: 5354473
    Abstract: A method for concentrating a solute from a mixture by countercurrent chromatography, by introducing a stationary phase into a countercurrent chromatographic centrifuge, introducing a sample of a mixture containing a solute into the centrifuge, introducing a sufficient quantity of an elution peak sharpening agent into the centrifuge, introducing a mobile phase into the centrifuge, and performing countercurrent chromatographic centrifugation. The eluting fractions containing the concentrated solute are identified and collected.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: October 11, 1994
    Assignee: The United States of America as represented by the Departent of Health and Human Services
    Inventors: Yoichiro Ito, Hans J. Cahnmann