Patents by Inventor Carl K. Fredrickson

Carl K. Fredrickson 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).

  • METHODS FOR DETECTING HUMANS
    Publication number: 20100027378
    Abstract: A method of detecting a human, that includes (a) measuring the ultrasonic signal emitted from human footsteps; (b) measuring the human body motion Doppler signature; reviewing the measurements of steps (a) and (b); and (d) determining the presence of a human.
    Type: Application
    Filed: October 27, 2008
    Publication date: February 4, 2010
    Inventors: James M. Sabatier, Alexander E. Ekimov, Carl K. Fredrickson