Patents by Inventor Terence Thistlethwaite

Terence Thistlethwaite 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).

  • Catalyst precursors
    Patent number: 4772579
    Abstract: Catalyst precursor units, e.g. for ammonia synthesis catalysts, comprise an iron oxide composition in the form of sintered shaped units of substantially uniform cross section having a plurality, e.g. 13 to 50 or more, through passages of substantially uniform cross section. The passages preferably have a diameter of less than 1.5, particularly less than 0.7, mm.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: September 20, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Terence Thistlethwaite, Johan H. H. ter Maat, Peter J. Davidson
  • Bed packing material
    Patent number: 4729982
    Abstract: A bed packing material, e.g. for use as a catalyst precursor, in the form of regular, preferably cylindrical, units having a multiplicity of through passages of small cross section so that the units have a low voidage, GV, a high ratio of the geometric surface area, GSA, to the volume V, of the equivalent cylindrical unit having no passages, and a high ratio of GSA to the product of GV and the surface area, A, of the equivalent cylindrical unit having no passages.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: March 8, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Terence Thistlethwaite, Johan H. H. T. Maat, Peter J. Davidson