Patents by Inventor Bao Li-Yuan

Bao Li-Yuan 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).

  • Electrophoresis with chemically suppressed detection
    Patent number: 5433838
    Abstract: Improved capillary electrophoresis apparatus of the type that generally includes a capillary tube, the capillary tube having a sample inlet end and an outlet end, a first electrode in electrical communication with the inlet end of the capillary tube, a second electrode in electrical communication with the outlet end of the capillary tube and a high voltage power supply in electrical communication with the first and second electrodes. The improvement is to connect a miniature Ion Chromatography membrane suppressor to the outlet end of the capillary tube, to connect a conductivity detector to the membrane suppressor and to place the second electrode in the regenerant compartment of the membrane suppressor.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: July 18, 1995
    Assignee: The Dow Chemical Company
    Inventors: Purnendu Dasgupta, Bao Li-Yuan
  • Electrophoresis with chemically suppressed detection
    Patent number: 5358612
    Abstract: Improved capillary electrophoresis apparatus of the type that generally includes a capillary tube, the capillary tube having a sample inlet end and an outlet end, a first electrode in electrical communication with the inlet end of the capillary tube, a second electrode in electrical communication with the outlet end of the capillary tube and a high voltage power supply in electrical communication with the first and second electrodes. The improvement is to connect a miniature Ion Chromatography membrane suppressor to the outlet end of the capillary tube, to connect a conductivity detector to the membrane suppressor and to place the second electrode in the regenerant compartment of the membrane suppressor.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: October 25, 1994
    Assignee: The Dow Chemical Company
    Inventors: Purnendu K. Dasgupta, Bao Li-Yuan