Patents by Inventor Keith S. Rizkowski

Keith S. Rizkowski 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).

  • Programmable pulse shaper for sonobouy apparatus
    Patent number: 5065370
    Abstract: This invention discloses electronic circuit that can be either embedded in n oceanographic sonobuoy housing or used as stand-alone equipment and which establishes and generates sonar signals of a repetition rate, pulse length, and amplitude pulse shape which are all programmably variable, selectable and determinable. A plurality of predetermined sonar pulse "profiles" are stored in a read only memory (ROM). A particular profile is selected from this memory and this profile is generated point by point at a selected frequency.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: November 12, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Keith S. Rizkowski, David E. Zeidler