Patents by Inventor Simon Cartwright

Simon Cartwright 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).

  • Silicas
    Patent number: 5637636
    Abstract: An amorphous silica has a pore size distribution wherein 90% of the pores have a diameter above 15 nanometers, and less than 20% of the pore volume is in pores having a pore diameter between 10 and 20 nanometers, the amorphous silica having a CTAB surface area of less than 100 m.sup.2 /g, the amorphous silica having a matting efficiency of below 20 gloss units at an incidence angle of 60.degree. and a loading of 5% by weight. It can be prepared by a precipitation route. It is used in thixotropic paints and lacquers.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: June 10, 1997
    Assignee: Crosfield Limited
    Inventors: Simon Cartwright, Ian P. McKeown, Peter W. Stanier