Patents by Inventor Christopher Kwan

Christopher Kwan 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: 8085914
    Abstract: At least one exemplary embodiment of the present invention includes a method, comprising requesting real-time measurement data for a telephone network between a transit carrier and a predetermined terminating carrier; and automatically receiving the real-time measurement data via the Internet at an originating carrier associated with the transit carrier. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: December 27, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Min-Hsuan Chen, Richard Chiang, Christopher Kwan, Stephen R. Lang
  • Patent number: 7065194
    Abstract: At least one exemplary embodiment of the present invention includes a method, comprising automatically obtaining real-time measurement data for a telephone network between a transit carrier and a predetermined terminating carrier; and automatically providing the real-time measurement data via the Internet to an originating carrier associated with the transit carrier. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 20, 2006
    Assignee: AT&T Corp.
    Inventors: Min-Hsuan Chen, Richard Chiang, Christopher Kwan, Stephen R. Lang
  • Patent number: 5418793
    Abstract: A method and apparatus for conformance testing of complex entities, such as networks and their protocols. Networks that have their managed objects, attributes and notifications defined in industry standard ASN.1 notation can be methodically processed according to finite state machine models of their managed objects to provide optimum test cases for conformance testing. These test cases are optimum in that they are minimized according to a cost criterion, while designed to test each state of the finite state machine model at least once. A data base stores the optimum test cases of the managed objects to support testing of the defined and modeled network. The method further applies these optimum test cases via a test apparatus to a system-under-test, e.g. a network, to test conformance thereof to its specifications.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: May 23, 1995
    Assignee: AT&T Corp.
    Inventors: James C. M. Chang, Karim M. Ghafouri, Edmond N. Hong, Christopher Kwan, Amit Limaye, Ramesh Sathyanarayana