Patents by Inventor Matthias Herget

Matthias Herget 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).

  • Marker for use in a magnetic anti-theft security system and method for making same
    Patent number: 6166636
    Abstract: A marker for employment in a magnetic anti-theft security system is composed of an oblong alarm strip of an amorphous ferromagnetic alloy and at least one activation strip applied onto the alarm strip and composed of a semi-hard magnetic alloy. One or more spatially separated regions that are composed of a non-magnetic phase are introduced into the activation strip with a thermal treatment. The semi-hard magnetic alloy has a coercive force H.sub.c of 15 through 100 A/cm and a remanence B.sub.r of at least 0.8 T.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 26, 2000
    Assignee: Vacuumschmelze GmbH
    Inventors: Matthias Herget, Ottmar Roth