Patents by Inventor Tomasz Celkowski

Tomasz Celkowski 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).

  • Pay-per use for data-network-based public access services
    Patent number: 6243450
    Abstract: An apparatus for vending public multimedia services has a telephone, a multimedia terminal, a payment receiver for receiving an authorization to accept charges for enabling use of at least one of the telephone and the multimedia terminal, a file receiver for receiving a file, the file containing a field with cost per unit time for a service and a field with a modifier for the cost per unit time for the service, memory for storing the file, and a usage cost determiner for determining a usage cost based on a time of use of the service and information in the file.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: June 5, 2001
    Assignee: Nortel Networks Corporation
    Inventors: Bernie G. Jansen, Tomasz Celkowski, Nick Isgro