Patents by Inventor Erik Björnemo

Erik Björnemo 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).

  • Joint estimation of electromagnetic earth responses and ambient noise
    Patent number: 10613246
    Abstract: A method and system for estimation of electromagnetic earth responses in a marine electromagnetic survey. A method may comprise estimating initial values of the electromagnetic earth responses and ambient noise applicable to the marine electromagnetic survey; and processing electromagnetic data based on the initial values of the electromagnetic earth responses and the ambient noise to obtain a joint estimation of updated values of the electromagnetic earth responses and the ambient noise, wherein the electromagnetic data was acquired with one or more electromagnetic sensors, wherein the electromagnetic data contains measurements of an electromagnetic field.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: April 7, 2020
    Assignee: PGS Geophysical AS
    Inventors: Johan Mattsson, Peter Lindqvist, Erik Björnemo
  • Joint Estimation of Electromagnetic Earth Responses and Ambient Noise
    Publication number: 20170227668
    Abstract: A method and system for estimation of electromagnetic earth responses in a marine electromagnetic survey. A method may comprise estimating initial values of the electromagnetic earth responses and ambient noise applicable to the marine electromagnetic survey; and processing electromagnetic data based on the initial values of the electromagnetic earth responses and the ambient noise to obtain a joint estimation of updated values of the electromagnetic earth responses and the ambient noise, wherein the electromagnetic data was acquired with one or more electromagnetic sensors, wherein the electromagnetic data contains measurements of an electromagnetic field.
    Type: Application
    Filed: August 18, 2015
    Publication date: August 10, 2017
    Applicant: PGS Geophysical AS
    Inventors: Johan Mattsson, Peter Lindqvist, Erik Björnemo
  • Uncertainty-based frequency-selected inversion of electromagnetic geophysical data
    Patent number: 9575205
    Abstract: Disclosed are methods and apparatus using frequency-selected electromagnetic inversion to obtain sub-surface geophysical characteristics. One embodiment relates to a computer-implemented method for inverting an electromagnetic geophysical data signal to obtain an earth response. The method involves computing uncertainties associated with an electromagnetic geophysical data signal and selecting subset of frequencies based on the uncertainties. The electromagnetic geophysical data signal may then be inverted for the subset of the frequencies to determine the earth response. Other embodiments, aspects, and features are also disclosed.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 21, 2017
    Assignee: PGS Geophysical AS
    Inventor: Erik Björnemo