Patents by Inventor Andrew T. Sayer

Andrew T. Sayer 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).

  • Destruction process
    Patent number: 5308458
    Abstract: A process for the decomposition of photocatically degradable organic material includes exposing the organic material to ultraviolet light as the material is passing across the surface of a spinning disc. The surface of the disc carries anatase titanium dioxide adhering to the disc. The anatase titanium dioxide acts as a catalyst in the degradation process and preferably has a high surface area.Organic materials such as hydrocarbons alcohols, acids, esters and others are destroyed by this environmentally acceptable process.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: May 3, 1994
    Assignee: Tioxide Group Services Limited
    Inventors: Donald Urwin, Andrew T. Sayer, Colin Howarth, Craig Wallis
  • Destruction process
    Patent number: 5163626
    Abstract: A process for the decomposition of photocatalytically decomposable organic material includes exposing the organic material to ultraviolet light as the material is passed across the surface of a spinning disc. The organic material is in the form of a liquid dispersion, preferably an aqueous dispersion and the dispersion also contains anatase titanium dioxide which acts as a catalyst in the decomposition process. Preferably the anatase titanium dioxide has a high surface area.Organic materials such as hydrocarbons, alcohols, acids, esters and others are destroyed in this environmentally acceptable process.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: November 17, 1992
    Assignee: Tioxide Group Services Limited
    Inventors: Donald Urwin, Andrew T. Sayer, Colin R. Howarth, Craig Wallis