The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2011
Filed:
Dec. 02, 2005
Tor Schaug-pettersen, Trondheim, NO;
Svein Ellingsrud, Trondheim, NO;
Terje Eidesmo, Ranheim, NO;
Jan-aage Langeland, Garnes, NO;
Tor Schaug-Pettersen, Trondheim, NO;
Svein Ellingsrud, Trondheim, NO;
Terje Eidesmo, Ranheim, NO;
Jan-Aage Langeland, Garnes, NO;
Electromagnetic Geoservices AS, Trondheim, NO;
Abstract
A source arrangement for generating electrogmagnetic (EM) wavefields, comprising an EM signal generator, at least three electrodes (-) 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.