Patents by Inventor Duncan Lee

Duncan Lee 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
    Patent number: 7594961
    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: Grant
    Filed: November 15, 2004
    Date of Patent: September 29, 2009
    Assignee: Loughborough University Enterprises Limited
    Inventors: Jonathan Charles Shepley Booth, Sandra Elizabeth Dann, Duncan Lee John O'Brien
  • Fraud deterred product and service coupons
    Publication number: 20040210484
    Abstract: A membership user coupon program for printed and electronic coupons having built-in measures to deter fraud committed by a retailer and/or a consumer during the redemption and/or reimbursement of the coupon. The system and process provide traceability prior to the issuance and/or printing of the coupon, prior to a retailer acceptance of the coupon and at the point of sale.
    Type: Application
    Filed: May 6, 2004
    Publication date: October 21, 2004
    Inventor: Duncan Lee
  • Fraud deterred product and service coupons
    Patent number: 6766301
    Abstract: A membership user coupon program for printed and electronic coupons having built-in measures to deter fraud committed by a retailer and/or a consumer during the redemption and/or reimbursement of the coupon. The system and process provide traceability prior to the issuance and/or printing of the coupon, prior to a retailer acceptance of the coupon and at the point of sale.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: July 20, 2004
    Inventors: Mike Daniel, Duncan Lee