Patents by Inventor Derek Grosvenor

Derek Grosvenor 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).

  • Glazing compositions for ceramic articles
    Patent number: 4004935
    Abstract: A glazed ceramic article in which the glaze includes titanium dioxide at least some of which is in the form of a metal titanate or a metal titano silicate and having a gloss of from 9 to 55 units at 45.degree. illumination. Also a glazing composition is described prepared by a semi-fritting technique in which the composition includes a mixture of a finely divided frit and an unfritted crystalline silica with the titanium dioxide being included in the frit together with alumina and a source of strontium, calcium or magnesium.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: January 25, 1977
    Assignee: Tioxide Group Limited
    Inventors: Derek Grosvenor, John Robert Frederick Nicholson