ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,814, issued on Dec. 30, was assigned to MAXIS-01 Corp. (Tokyo).

"Electrode structure of crystal unit, crystal unit, and crystal oscillator" was invented by Noboru Takahashi (Tokyo), Ryo Kobayashi (Tokyo) and Yukihiro Okamoto (Hyogo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is able to reduce a CI value without requiring precise processing of a crystal blank.An electrode structure of a crystal unit (1) according to the present invention includes driven electrodes (21, 22) arranged at least at a center on main surfaces (11, 12) of a crystal blank (10). The driven electrodes (21, 22) have a structure in which vibration ...