Patents by Inventor Eira T. Seppälä

Eira T. Seppälä 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).

  • Electromagnetic wave transmission lines using magnetic nanoparticle composites
    Patent number: 9011752
    Abstract: The disclosure pertains to a method of orientating particles by their easy axes in a selected area of a composite comprising the particles dispersed in a matrix. The method comprises liquefying and then solidifying the matrix at the selected area while applying an external magnetic field on the composite. The composite can be used for a transmission line component for directing high frequency electromagnetic waves. The particles are preferably superparamagnetic nanocrystallite particles and matrix is preferably a polymeric material.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: April 21, 2015
    Assignee: Nokia Corporation
    Inventors: Eira T. Seppälä, Markku T. Heino, Reijo K. Lehtiniemi, Markku A. Oksanen