Patents by Inventor Youqin Xie

Youqin Xie 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).

  • Patent number: 5552032
    Abstract: A solid state ion-selective electrode device to detect a selected ion species in solution an electrode consisting of a homogeneous solid mixture. The mixture is a solid electrolyte composition possessing ionic conductivity and polyvinyl chloride, and optionally graphite. The electrode is substantially free of metallic silver. An electrical connection operates as a contact between the electrode device and a reference source. Methods for detecting the selected ion species in solutions, such as biological samples utilizing the above described electrodes, are also disclosed.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: September 3, 1996
    Assignee: Beckman Instruments, Inc.
    Inventors: Youqin Xie, John N. Harman, III