Patents by Inventor Guoying Chen

Guoying Chen 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).

  • Optical fiber waist refractometer
    Patent number: 5600433
    Abstract: The present invention relates to a refractive index detector for a dynamic liquid sample having a fiber optic filament of a predetermined diameter with an unclad sensor region, wherein the sensor region comprises a longitudinally tapered zone wherein the diameter continuously decreases from the predetermined diameter to a minimum diameter.The invention finds use as a detector for high performance liquid chromatography and capillary zone electrophoresis.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: February 4, 1997
    Assignee: The University of Wyoming
    Inventors: Daniel A. Buttry, Thomas C. Vogelmann, Guoying Chen, Richard Goodwin
  • Method and means for a spatial and temporal probe for laser-generated plumes based on density gradients
    Patent number: 4921348
    Abstract: A method and means for a spatial and temporal probe for laser generated plumes based on density gradients includes generation of a plume of vaporized material from a surface by an energy source. The probe laser beam is positioned so that the plume passes through the probe laser beam. Movement of the probe laser beam caused by refraction from the density gradient of the plume is monitored. Spatial and temporal information, correlated to one another, is then derived.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: May 1, 1990
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Edward S. Yeung, Guoying Chen