Patents by Inventor David Trop

David Trop 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: 6871062
    Abstract: A subscriber to a wireless service provider can make calls in a conventional manner, and can receive calls from a caller in a mode in which the caller rather than the subscriber is charged. More particularly, a request for connection to the subscriber from the caller is received by an administrating server which determines if the call can be charged to the caller and then generates such a charge. Preferably the administrating server is part of a payment platform provided to generate an account for the subscriber to pay for outgoing (and, selectively, incoming) calls.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: March 22, 2005
    Assignee: IDT Corporation
    Inventors: David Trop, Eli Silberstein
  • Publication number: 20020147002
    Abstract: A subscriber to a wireless service provider can make calls in a conventional manner, and can receive calls from a caller in a mode in which the caller rather than the subscriber is charged. More particularly, a request for connection to the subscriber from the caller is received by an administrating server which determines if the call can be charged to the caller and then generates such a charge. Preferably the administrating server is part of a payment platform provided to generate an account for the subscriber to pay for outgoing (and, selectively, incoming) calls.
    Type: Application
    Filed: January 16, 2001
    Publication date: October 10, 2002
    Inventors: David Trop, Eli Silberstein
  • Publication number: 20020094800
    Abstract: A paging system is arranged to deliver a page from a caller to a subscriber with an optional vocal message being transcribed into a digital message. The identity of the caller and the digital message, if any, are shown on the screen of a pager associated with the subscriber. The subscriber can contact the caller by calling a special number which is not necessarily the same number as the caller's telephone number. The subscriber is then automatically connected to the caller. The cost of the page and the return call can be charged to either the subscriber or the caller.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 18, 2002
    Inventors: David Trop, Eli Silberstein