ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,544, issued on March 18, was assigned to Yokogawa Electric Corp. (Tokyo).
"Current measurement device" was invented by Kazuma Takenaka (Musashino, Japan), Kotaro Ogawa (Musashino, Japan), Minako Terao (Musashino, Japan) and Naoki Noguchi (Musashino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A current measurement device (1 to 3) includes a first sensor (SE1) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated by a current (I) flowing through a measurement target conductor (MC), a hollow magnetic shielding member (12) that includes a cutout portion (CP2) into which the measu...