Patents by Inventor Peter Marki

Peter Marki 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).

  • Structure-borne sound detector for an intruder alarm system
    Patent number: 5602529
    Abstract: The detector contains a structure-borne sound microphone connected to an electronic evaluation unit with a piezoelectric sensor (18) for structure-borne sound vibrations. This sensor has a vibrating bar (28), which is attached by means of hybrid technology to a carrier (27). The vibrating bar (28) is formed by a bimorph element and the carrier by an electrically conductive ceramic wafer.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: February 11, 1997
    Assignee: Cerberus AG
    Inventors: George Wegmann, Cornel Studach, Peter Marki, Peter Steiner, Peter Ryser