Patents by Inventor Daniel J. Haman

Daniel J. Haman 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).

  • Half-bridge control circuit
    Patent number: 7102320
    Abstract: A circuit is configured to detect an output state of a first half-bridge circuit and to generate a first signal and a second signal based on the output state to reproduce the output state at an output of a second half-bridge circuit.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: September 5, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Daniel J. Haman
  • Electrical load drive and control system
    Patent number: 4504779
    Abstract: A circuit for varying the power supplied from a D.C. power supply to a moderate to high powered load such as a motor is disclosed. Trapezoidal voltage and current waveforms are used approaching the maximum load power delivery available from sine wave drives and the minimum dissipation in the driver circuitry available with square wave drives, while at the same time minimizing the generation of undesirable electromagnetic interference (EMI).
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: March 12, 1985
    Assignee: Hewlett-Packard Company
    Inventor: Daniel J. Haman