Patents by Inventor Laurence O'Toole

Laurence O'Toole 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).

  • Method and apparatus for the creation of a self-authenticating document
    Patent number: 7757091
    Abstract: A self-authenticating printed document (101) comprises text and a symbol (102) printed on the document (101). The symbol (102) includes a verification value, which is representative of the entire data content of the text, and error correction codes for correcting the text. The verification value is used to check the integrity of the text after the document has been corrected using the error correction codes.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: July 13, 2010
    Assignee: Abathorn Limited
    Inventors: John Duffell, Laurence O'Toole, Thomas Martin
  • Method and apparatus for the creation of a self-authenticating document
    Publication number: 20040169366
    Abstract: A self-authenticating printed document (101) comprises text and a symbol (102) printed on the document (101). The symbol (102) includes a verification value, which is representative of the entire data content of the text, and error correction codes for correcting the text. The verification value is used to check the integrity of the text after the document has been corrected using the error correction codes.
    Type: Application
    Filed: April 14, 2004
    Publication date: September 2, 2004
    Inventors: John Duffell, Laurence O'Toole, Thomas Martin