Patents by Inventor Fern Dowdall

Fern Dowdall 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 substrates for security documents
    Patent number: 8950679
    Abstract: The invention relates to improvements in security substrates for security documents. The security substrate has at least two sets of regions having a machine detectable characteristic, in which only a first set of regions is applied to a first surface of the substrate. At least two sets of regions together form a machine readable code.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: February 10, 2015
    Assignee: De La Rue International Limited
    Inventors: James Peter Snelling, Fern Dowdall
  • Security Substrates for Security Documents
    Publication number: 20130062416
    Abstract: The invention relates to improvements in security substrates for security documents. The security substrate has at least two sets of regions having a machine detectable characteristic, in which only a first set of regions is applied to a first surface of the substrate. At least two sets of regions together form a machine readable code.
    Type: Application
    Filed: February 16, 2011
    Publication date: March 14, 2013
    Inventors: James Peter Snelling, Fern Dowdall