Patents by Inventor Siu C. C. Yeung

Siu C. C. Yeung 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).

  • Directed flow diagnostic device and method
    Patent number: 5006464
    Abstract: Am improved device and method for analyte assay in liquid samples, wherein a porous membrane with an immobilized receptor which is capable of directly or indirectly binding to the analyte is separated from a body of absorbent material capable of absorbing the liquid sample by a septum capable of substantially separating the porous membrane from the absorbent body while substantially directing the flow of the liquid sample from the porous membrane to the absorbent body.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: April 9, 1991
    Assignee: E-Y Laboratories, Inc.
    Inventors: Albert E. Chu, Peter K. Chun, Siu C. C. Yeung