Patents by Inventor Ulf Jonstromer

Ulf Jonstromer 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: 6142369
    Abstract: An electronic transaction system for conducting electronic financial transactions including a smart card configured to store a plurality of payer electronic credits and a communication module configured to transmit the electronic credits from the smart card to a party selected from a plurality of addressable parties accessible through a Public Switched Telephone Network. The smart card having a storage device configured to store the electronic credits and a computational device configured to debit or credit the electronic credits. The communications module including an actuation device configured to generate a signal for transmitting the electronic credits to the party, a routing device configured to produce an address of the party, a video display unit configured to display credit transfer data, and a keypad configured to enter details of an electronic transfer. Wherein, the payer remains in physical control of the smart cart at all times during conduct of the transaction.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 7, 2000
    Assignee: Au-System
    Inventor: Ulf Jonstromer