Patents by Inventor Alan J. Tooth

Alan J. Tooth 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).

  • Sheet materials
    Patent number: 4462866
    Abstract: A sheet material such as paper is provided during manufacture with an elongate element partially disposed within the thickness of the paper sheet but exposed at spaced locations one one side of the sheet. The paper may be used in making security documents such as banknotes and checks.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: July 31, 1984
    Assignee: Portals Limited
    Inventors: Alan J. Tooth, Neil Pask
  • Security papers
    Patent number: 4183989
    Abstract: A security paper which contains a security device e.g. a strip, thread or planchette having at least two machine verifiable security features thereon, one of which is a magnetic material, which may be magnetically coded or printed in a predetermined pattern on the device, and a second of which is a luminescent material, an X-ray absorbent or a metal. The provision of several features on one device provides a large increase in document security.
    Type: Grant
    Filed: November 29, 1977
    Date of Patent: January 15, 1980
    Assignee: Portals Limited
    Inventor: Alan J. Tooth