Patents Assigned to JOH. ENSCHEDE B.V.
  • Patent number: 7027613
    Abstract: The invention relates to a digital security image, to be arranged on or in carrier, particularly a document, such as bonds or other documents the authenticity or origin of which is of importance, and having at least a first and second security characteristic visually almost imperceptibly incorporated in the digital security image, wherein the first security characteristic is detectably copied on a copy when copying the document and the second security characteristic is not copied onto said copy when copying the document, as well as a method for arranging and for detecting such a security element, as well as equipment for it. Additionally the invention relates to an image and an image in electronic form, provided with the security element according to the invention.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: April 11, 2006
    Assignee: Koninklijke Joh. Enschede B.V.
    Inventor: Joost Alexander Spierenburg
  • Publication number: 20040252860
    Abstract: The invention relates to a digital security image, to be arranged on or in carrier, particularly a document, such as bonds or other documents the authenticity or origin of which is of importance, and having at least a first and second security characteristic visually almost imperceptibly incorporated in the digital security image, wherein the first security characteristic is detectably copied on a copy when copying the document and the second security characteristic is not copied onto said copy when copying the document, as well as a method for arranging and for detecting such a security element, as well as equipment for it. Additionally the invention relates to an image and an image in electronic form, provided with the security element according to the invention.
    Type: Application
    Filed: July 10, 2003
    Publication date: December 16, 2004
    Applicant: JOH. ENSCHEDE B.V.
    Inventor: Joost Alexander Spierenburg