ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,949, issued on March 11, was assigned to P & L PIPE SURVEY B.V. (Hellevoetsluis, Netherlands).
"Apparatus and method for pipeline inspection using EMAT generated shear waves" was invented by Sergey Popov (Hellevoetsluis, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for detecting and classifying cracks in pipelines is disclosed. The method for detecting and classifying cracks comprises the steps of: emitting a first shear wave along a region of inspection, the first shear wave being polarized in a first direction; receiving the first shear wave; emitting a second shear wave along the region of inspection, the sec...