Patents by Inventor Donata Gunz-Castelberg

Donata Gunz-Castelberg 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).

  • Anti-glare device
    Patent number: 5930047
    Abstract: An active anti-glare filter system in the form of a monoblock or solid unit which can be easily inserted into areas of protective helmets and goggles as a replacement or alternate filter includes an active and a passive optical filter elements, electronics which control the active optical filter element and a current supply, preferably in the form of a solar cell, which powers the electronics. Transparent cover plates surround the foregoing elements and are joined together and protected by a jointing mass.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: July 27, 1999
    Assignee: Xelux Holding AG
    Inventors: Stefan Gunz, Donata Gunz-Castelberg, Manfred Castelberg