Patents by Inventor Peter R. Fielden

Peter R. Fielden 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).

  • Flow injection analysis
    Patent number: 5156814
    Abstract: A liquid pump, particularly though not exclusively suitable for use in flow injection analysis, and comprising a reservoir 3 an outlet tube 6 for conducting liquid 2 from the reservoir and a device for introducing gas into the liquid in the reservoir to displace liquid therefrom through the tube. The gas may be introduced in the form of a series of rapid pulses of controlled duration and frequency and is introduced at a fixed level relative to the entrance to the outlet tube.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: October 20, 1992
    Assignees: University of Manchester Institute of Science & Technology, Imperial Chemical Industries PLC, Peter R. Fielden
    Inventors: Peter R. Fielden, John R. P. Clarke