ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,807, issued on Dec. 16, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen" was invented by Shigeru Yamashita (Saitama, Japan), Masamitsu Ito (Saitama, Japan) and Toshihiko Horie (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic fi...