Patents by Inventor Pasi Hakala

Pasi Hakala 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).

  • Checking the identification number of a mobile subscriber
    Patent number: 5907804
    Abstract: The invention relates to method for checking a personal identification number (PIN) of a subscriber in a mobile equipment (500) employed in a mobile communications system (600), the mobile equipment containing a protected subscriber identity (IMSI, ITSI). The method comprises the steps of requesting (203) the user of the mobile equipment the personal identification number (PIN) of the subscriber, checking (103) the validity of the personal identification number entered by the user, repeating (109) these steps provided that the user does not enter the valid personal identification number, and, when the number of requests (203) and checks (103) of the identification number exceeds a predetermined threshold value, blocking (111) the mobile equipment.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: May 25, 1999
    Assignee: Nokia Telecommunications Oy
    Inventors: Osmo Schroderus, Pasi Hakala