Patents by Inventor Sandra Dann

Sandra Dann 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).

  • Inorganic pigments
    Publication number: 20070144402
    Abstract: An inorganic pigment, the pigment comprising a compound which is an oxysulphide or oxyselenide of tin and a metal chosen from niobium or tantalum. The pigments are brightly colored in the color range from yellow, through orange to red, and are especially suitable for the coloration of glass and plastic substrates. Methods for the production of the pigments are also described.
    Type: Application
    Filed: November 15, 2004
    Publication date: June 28, 2007
    Inventors: Jonathan Booth, Sandra Dann, Duncan O'Brien