Patents by Inventor Fiona C. R. Morrison

Fiona C. R. Morrison 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).

  • Refractory liner compositions
    Patent number: 4913408
    Abstract: A refractory liner composition which consists essentially of carbon and a composite selected from the group consisting of zirconia and O'-sialon and zirconia and silicon oxynitride.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: April 3, 1990
    Assignee: Vesuvius Crucible Company
    Inventors: Dale B. Hoggard, Han K. Park, Fiona C. R. Morrison
  • Pigment compositions
    Patent number: 4898619
    Abstract: A pigment which comprises crystallites of iron oxide having an average particle size of less than 100 nanometers doped with from 10% to 80% by weight of aluminium as Al.sup.3+ based on the weight of iron, having the general formula (Al.sub.x Fe.sub.2-x)O.sub.3, where x=0.34 to 1.24 and having an orange color with the following color measurements:L (Lightness)>45.degree.C (Strength)>40.degree.H (Hue) 50.degree. to 60.degree.A pigment precursor composition is also provided which, on firing, produces the pigment as defined above.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: February 6, 1990
    Assignee: Cookson Group PLC
    Inventors: John F. Clifford, Fiona C. R. Morrison