Patents Assigned to Arjo Wiggins Security Sas
  • Security paper
    Patent number: 7041364
    Abstract: The invention relates to security paper (1) including at least one zone (2; 3) that reacts with nonpolar solvents. The paper also includes a barrier (4) that is impermeable to nonpolar solvents between a first outside face (10) of the security paper and the zone (2; 3) that reacts with the solvents.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: May 9, 2006
    Assignee: Arjo Wiggins Security Sas
    Inventor: Sandrine Rancien