Patents Assigned to Inter Marketing Oy
  • Sensor for verification of genuineness of security paper
    Patent number: 5122754
    Abstract: A method and a device for automatic verification of genuineness of a banknote or a document comprising a watermark is described. A two-part, doubly active capacitive sensor device (4, 6, 7) is used. A symmetry property of the sensor output signal is changed in a predetermined manner when a correct watermark is present in a coinciding position with shape-adapted capacitor electrodes (4, 6).
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: June 16, 1992
    Assignee: Inter Marketing OY
    Inventor: Einar Gotaas
  • Device for indentifying coins
    Patent number: 5033602
    Abstract: A device for electronically identifying coins, or the like, is described in which coins fed along a feed path are illuminated by light passed from a light source essentially perpendicularly to the feed path. A photosensitive sensor receives the light which passes the coin and converts it to an electric signal representative of the coin diameter. The device utilizes a column-like light source and a lens assembly intermediate the coin and the sensor whereby the size requirements of the sensor are reduced.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: July 23, 1991
    Assignee: Inter Marketing Oy
    Inventors: Tapani Saarinen, Jaakko A. Rasanen