ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,623, issued on Aug. 4, was assigned to PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).
"Metal collector and use of it" was invented by Tetsuya Sato (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A metal collector for a pipeline disclosed herein includes: a first magnet arranged on an outer surface of a pipeline in a state where a N pole is directed toward an inner side of the pipeline and a S pole is directed toward an outer side; a second magnet arranged on another part of the outer surface of the pipeline in a state where a S pole is directed toward the inner side and a N pole is directed toward the outer side; a magnetic circuit forming...