Patents by Inventor Liisi Schulman

Liisi Schulman 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 for reducing scattering of electromagnetic waves
    Patent number: 8164505
    Abstract: A structure made of in certain frequency bands invisible material includes a transmission line network. The structure has a matching layer at the boundary of the material, supporting structures inside the transmission line network and that the transmission line network has been matched with the surrounding space.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: April 24, 2012
    Assignee: Aalto University Foundation
    Inventors: Jukka Venermo, Sergei A. Tretyakov, Olli Luukonen, Pekka Alitalo, Liisi Schulman
  • STRUCTURE FOR REDUCING SCATTERING OF ELECTROMAGNETIC WAVES
    Publication number: 20110102098
    Abstract: A structure made of in certain frequency bands invisible material includes a transmission line network. The structure has a matching layer at the boundary of the material, supporting structures inside the transmission line network and that the transmission line network has been matched with the surrounding space.
    Type: Application
    Filed: June 3, 2008
    Publication date: May 5, 2011
    Applicant: HELSINKI UNIVERSITY OF TECHNOLOGY
    Inventors: Jukka Venermo, Sergei A. Tretyakov, Olli Luukonen, Pekka Alitalo, Liisi Schulman