Patents by Inventor Steven D. Lenz

Steven D. Lenz 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: 5319974
    Abstract: To determine the depth of a body of water, ultrasonic pulses are transmitted from a point above the water at a known distance. Reflections from the water are received and the time of each of the leading edge of the reflections and the trailing edge are recorded as well as the amplitude. This information is used to sort the reflections and the most significant reflections are used to calculate the level of the water.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: June 14, 1994
    Assignee: Isco, Inc.
    Inventors: Steven D. Lenz, Raymond Hulinsky