Patents by Inventor Per Jan Neergaard

Per Jan Neergaard 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).

  • Device for shielding electronic units including a transmitting/receiving equipment, and especially for shielding mobile phones
    Patent number: 7365700
    Abstract: The invention relates to a device shielding especially an electronic unit with a transmitter, such as a mobile phone, against electromagnetic radiation. The device includes a crystal and an winding/spiral, where the winding/spiral is wound with the crystal arranged in the middle. One end of the winding extends immediately adjacent the antenna of the electronic unit. The device includes also a second winding of ferromagnetic material and a metallic film.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: April 29, 2008
    Inventors: Per Jan Neergaard, Karsten Frank Rye Madsen, Hannah B. Zweidorff, René Bozzini