ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,790, issued on May 20, was assigned to Rosen IP AG (Stans, Switzerland).
"Inspection or cleaning pig" was invented by Michael Schulte (Meppen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pig is provided for passing through a pipeline having a pipeline wall. The pig comprises at least one functional unit for cleaning the pipeline and/or for receiving pipeline information. The pig also comprises at least one magnet unit which is provided for magnetizing the pipeline wall, and which has a plurality of magnets. The magnet unit has a plurality of segments each with at least one magnet. The magnetizing devices of mutually adjacent segments ar...