Patents by Inventor Syein Ellingsrud

Syein Ellingsrud 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).

  • Source For Electromagnetic Surveying
    Publication number: 20080122444
    Abstract: A source arrangement for generating electrogmagnetic (EM) wavefields, comprising an EM signal generator, at least three electrodes (141-144) connected to the generator, and a control system. The electrodes are spaced apart but not all in line. The control system is arranged to apply non-coincident time-varying signals or transmissions from the generator between different pairs of the electrodes. The non-coincidence can be by applying the signals sequentially or by applying the signals out of phase.
    Type: Application
    Filed: December 2, 2005
    Publication date: May 29, 2008
    Inventors: Tor Schaug-Pettersen, Syein Ellingsrud, Terje Eidesmo, Jan-Aage Langeland