US Patent Issued to NIHON DEMPA KOGYO on Aug. 12 for "Crystal unit, semimanufactured crystal unit, and method for manufacturing crystal unit" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,388,415, issued on Aug. 12, was assigned to NIHON DEMPA KOGYO Co. LTD. (Tokyo).

"Crystal unit, semimanufactured crystal unit, and method for manufacturing crystal unit" was invented by Kiyoharu Matsuo (Saitama, Japan) and Takahiro Ohtsuka (Saitama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A crystal unit includes a crystal element, excitation electrodes, and a container. The crystal element vibrates in a thickness-shear mode. The excitation electrodes are disposed on front and back surfaces of the crystal element. The crystal element is mounted to the container. The excitation electrodes are disposed on the crystal element. When a thickness o...