Patents by Inventor Margaret Steel

Margaret Steel 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).

  • Metal carbide-containing refractory materials
    Patent number: 6013226
    Abstract: Metal carbide-containing refractory materials are prepared by pyrolysing blanks comprising reactive metal sources and carbon-containing precursors under fluid pressure, e.g., using hot isostatic pressing techniques. Refractory composites containing ceramic fillers, reinforcing materials such as carbon fillers, excess carbon or excess metal are readily prepared thereby.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: January 11, 2000
    Assignee: Surface Transforms Ltd.
    Inventors: Margaret Steel, Philip Norton-Berry
  • Spray drying process with spinning atomizer
    Patent number: 5279708
    Abstract: A process for obtaining a substantially dry particulate solid in the form of particles with a narrow particle size distribution which comprises atomising a feedstock comprising a solution or dispersion of the solid in a liquid medium into droplets with a narrow size distribution and a volume median diameter from 100 to 250 micrometers in a spray dryer whereby the droplets are converted into the dry particulate solid within the spray dryer.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: January 18, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: William M. L. Wood, Margaret Steel, Philip Norton-Berry