ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,974, issued on March 11, was assigned to AKER TECHNOLOGY Co. LTD. (Taichung, Taiwan).

"Crystal oscillator and method of making the same" was invented by Ray-Hua Horng (Taichung, Taiwan) and Yi-Lun Lin (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A crystal oscillator includes a piezoelectric substrate having a thinned portion with opposite upper and lower surfaces respectively defining upper and lower surface work portions, and at least one side portion having at least one recessed portion with a bottom surface flush with the upper surface of the thinned portion. A top electrode layer has a top work portion disposed on the upper ...