Patents by Inventor Lori A. Leu

Lori A. Leu 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).

  • Differential pressure sensing means and method
    Patent number: 4827772
    Abstract: A differential pressure sensing means and method includes an inlet receiving a fluid having a first pressure. Another inlet receives a fluid having a second pressure. A plurality of pressure sensing devices are connected to the first and second inlets. Each pressure sensing device senses a pressure differential within a different predetermined range of pressures and provides a pressure signal representative thereof. An output circuit connected to the plurality of pressure signals provides a pressure signal selected from one of the signals provided by the plurality of pressure sensing devices so as to provide a pressure signal representative of the pressure difference between the first and second pressures of the fluids.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: May 9, 1989
    Assignee: Texaco Inc.
    Inventors: Brian K. Baker, Rei-Nan R. Hwan, Lori A. Leu