Patents Assigned to Laserplus Oy
  • Method and device for making visually observable markings onto transparent material
    Patent number: 6442974
    Abstract: The object of the invention is a method and a device for making visually distinguishable markings on the lower surface of a transparent material (5), using a vehicle (1). The marking is provided by causing a mixing of the transparent material and the vehicle by using a laser beam directed through the transparent material. The method can also be used to make markings on laminated glass without damaging the laminate.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: September 3, 2002
    Assignee: Laserplus Oy
    Inventors: Aku Paananen, Juha Liukkonen