Patents by Inventor Daniel P. Heyman

Daniel P. Heyman 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).

  • Method for preventing overload condition in a circuit switched arrangement
    Patent number: 6731740
    Abstract: A method that alleviates congestion problems in prior art networks by insuring that selected classes of calls have a reserved capacity, thus insuring a capability to service at least the selected level of traffic. In an illustrated embodiment, a selected capacity is reserved for voice calls, in contrast to data calls. When a connection request is made and there is unoccupied capacity, a voice call is always serviced, but a data call is serviced only if the number of established data connections is less than capacity of the path required for establishing a connection for the request, minus the capacity reserved for voice call.
    Type: Grant
    Filed: December 22, 2001
    Date of Patent: May 4, 2004
    Assignee: AT&T Corp.
    Inventors: Gagan L. Choudhury, Daniel P. Heyman, Alan Edward Kaplan, Vaidyanathan Ramaswami