Patents by Inventor Tuan T. Phan

Tuan T. Phan 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: 7286333
    Abstract: Switch card apparatus are disclosed. In one embodiment, a circuit includes a first portion having a first switch adapted to be coupled to a first voltage, a second portion including a second switch, and a third portion including a third switch. The first portion activates the first switch to couple the first voltage to the second portion. Similarly, the second portion activates the second switch in response to a second input signal and the first voltage to couple a second voltage to the third portion. Finally, the third portion activates the third switch in response to a third input signal and in response to the second voltage from the second portion to couple a control voltage to a load. Embodiments of the invention provide the desired reliability suitable for a variety of electrical systems, including arming and firing applications over a wide voltage and wide current range.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: October 23, 2007
    Assignee: The Boeing Company
    Inventors: Ronald A. Kubinski, Tuan T. Phan, Gregory H. Smith, Huan N. Nguyen