Patents by Inventor Yong Sheng

Yong Sheng 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).

  • Time-resolved fluorescence immunoassay
    Patent number: 4923819
    Abstract: Fluorescence immunoassay for determining single or multiple analytes based upon a single measurement of fluorescence are described.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: May 8, 1990
    Assignee: Chimerix Corporation
    Inventors: Salvador M. Fernandez, Hann-Ping Wang, Yong-Sheng Chao, Ernest F. Guignon
  • Method and appartatus for improved time-resolved fluorescence spectroscopy
    Patent number: 4855930
    Abstract: A method and apparatus for time-resolved fluorescence spectroscopy is described in which laser light from a single pulse is used to excite fluorescent photons in a sample, which fluorescence is detected by a PMT optimized for linearity and response time to produce photoelectrons which generate a current at the PMT anode. This current is discharged through an R/C network to produce a voltage amplitude waveform which is converted to an optical image, intensified, stored and digitized. The digitized version of the optical image is processed in a data processor to calculate the true fluorescence impulse response.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: August 8, 1989
    Assignee: Chimerix Corporation
    Inventors: Yong-Sheng Chao, Salvador M. Fernandez, Ernest F. Guignon