ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,581, issued on Sept. 9, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Cover film for pen sensor and pen sensor" was invented by Jun Kadowaki (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cover film used together with a pen sensor including a plurality of sensor electrodes, and a sensor controller which detects a position of an active pen in reference to a distribution of signal levels each corresponding to an amount of electric charge induced in an individual one of the plurality of sensor electrodes by a pen signal transmitted from a pen tip electrode disposed at a tip of the active pen. The cover film includes a conductive ...