Patents by Inventor Edward J. Twarog

Edward J. Twarog 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).

  • System and method for suppressing conducted emissions by a cryptographic device comprising an integrated circuit
    Patent number: 6748535
    Abstract: System and method for performing cryptographic operations include providing at least one processor for performing cryptographic operations, memory coupled to the processor for use in performing the cryptographic operations; and a storage component coupled to the processor for storing and retrieving information calculated and used in the cryptographic operations. The processor, memory and storage component are securely enclosed whereby direct access to the cryptographic operations is prevented. At least the processor is comprised in an integrated circuit. A first power source, which is external to the secure enclosure, is coupled to and supplies power to the processor, the memory and the storage component. A second power source, which is within the housing of the integrated circuit, is coupled to and supplies power to at least the processor.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: June 8, 2004
    Assignee: Pitney Bowes Inc.
    Inventors: Frederick W. Ryan, Jr., Monroe A. Weiant, Jr., Edward J. Twarog
  • System and method for suppressing conducted emissions by a cryptographic device
    Patent number: 6594760
    Abstract: System and method for performing cryptographic operations include providing at least one processor for performing cryptographic operations, memory coupled to the processor for use in performing the cryptographic operations; and a storage component coupled to the processor for storing and retrieving information calculated and used in the cryptographic operations. The processor, memory and storage component are securely enclosed whereby direct access to the cryptographic operations is prevented. A first power source, which is external to the secure enclosure, is coupled to and supplies power to the processor, the memory and the storage component. A second power source, which is internal to the secure enclosure, is coupled to and supplies power to at least the processor.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 15, 2003
    Assignee: Pitney Bowes Inc.
    Inventors: Frederick W. Ryan, Jr., Monroe A. Weiant, Jr., Edward J. Twarog
  • Multi function sensing device for printing apparatus
    Patent number: 5842800
    Abstract: A printing apparatus is disclosed which has various operating components, and which includes a single sensing means for sensing certain operational characteristics of the operating components to monitor the operational status thereof for the purpose of either providing an operator perceptible indication that a certain operational characteristic of one of the operating components is not in a condition for normal operation of the printing apparatus.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: December 1, 1998
    Assignee: Pitney Bowes Inc.
    Inventors: William F. Bailey, David W. Hubbard, Sungwon R. Moh, James R. Ralph, Edward J. Twarog