Patents by Inventor Colin Shenton

Colin Shenton 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).

  • Security device
    Patent number: 5199744
    Abstract: A substrate, such as a banknote or travellers' check, carries a security device including in association at least one embossed transitory image, such as a latent or transient image and an embossed linear area. The arrangement is such that when the embossed region of the substrate is viewed from different angles each image and linear area can be visually discerned.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: April 6, 1993
    Assignee: De La Rue plc
    Inventor: Colin Shenton