Patents by Inventor Lauri Levanto

Lauri Levanto 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).

  • Patent number: 5175758
    Abstract: A telephone system with which a connection between two subscribers can be established, at least one of them being a mobile subscriber. The system includes a paging network composed of one or several extensive paging ranges, each of them having a paging transmitter (H1, H2) of its own, a small cellular network with an exchange and a plurality of base stations (T), and mobile telephones with which a pager has been integrated. When calling a mobile telephone, the transmitter of the paging range in which the telephone is known or assumed to be transmits a paging message to the telephone, whereby, when the telephone is in the neighborhood of the base station, the exchange of the cellular network establishes immediately a connection between the subscribers. No paging calls are lost because they are stored in the exchange of the cellular network, and on an appropriate occasion the pager of the telephone and the exchange compare the paging messages stored in the memories.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: December 29, 1992
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Lauri Levanto, Jukka T. Ranta
  • Patent number: 5170494
    Abstract: According to the invention, the power and weight of a radio telephone can be modified by connecting the same basic unit (1) a desired power unit (2 or 4). The signals received and transmitted between the units (1 and 2 or 4) pass apart from each other.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: December 8, 1992
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Lauri Levanto
  • Patent number: 5016002
    Abstract: A matrix display for the display of alphanumeric characters one of the elements of the basically 5.times.3 matrix divided into two parts (P5a, P5b). The matrix can also be applied to a printer.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: May 14, 1991
    Assignee: Nokia-Mobira Oy
    Inventor: Lauri Levanto