Patents by Inventor Charles N. Peteros

Charles N. Peteros 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: 5564420
    Abstract: A Doppler flowmeter, which is capable of distinguishing reflected Doppler signals from spurious electrical interference signals, is provided with a multi-frequency transmitter, adapted to be coupled to a conduit through which liquid constituents may flow, for transmitting a first transmitted signal at a first frequency into the conduit during a first period of time and a second transmitted signal at a second frequency into the conduit during a second period of time, the second frequency being substantially different than the first frequency. The flowmeter includes a receiver for receiving signals including a first received signal received during the first period of time and a second received signal received during the second period of time, the first received signal having a third frequency and the second received signal having a fourth frequency.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: October 15, 1996
    Assignees: Minnesota Mining and Manufacturing Company, Viasat, Inc.
    Inventors: Richard A. Nazarian, Charles N. Peteros