Patents by Inventor Colin Austin Harris

Colin Austin Harris 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 for the manufacture of security paper
    Patent number: 5871615
    Abstract: Security paper carries an intricate tactile surface profile pattern which has been imparted to the paper during its manufacture, at a stage after initial de-watering but before final drying, by passing the paper through a nip between a forming surface corresponding to the desired pattern and a backing surface. The tactile pattern is of excellent durability, and its intricacy offers a high degree of security. The tactile pattern is visible when viewed under low angle light, which facilitates verification or authentication of security documents made using the patterned paper.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 16, 1999
    Assignee: The Wiggins Teape Group Limited
    Inventor: Colin Austin Harris