US Patent Issued to MURATA MANUFACTURING on April 14 for "Piezoelectric device" (Japanese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,667, issued on April 14, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).

"Piezoelectric device" was invented by Munehito Chatani (Nagaokakyo, Japan) and Shinsuke Ikeuchi (Nagaokakyo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A layered portion includes, at least above an opening, a first single-crystal piezoelectric body layer, a second single-crystal piezoelectric body layer, an intermediate electrode layer, a lower electrode layer, and an upper electrode layer. The first single-crystal piezoelectric body layer includes a material that produces a difference in etching rate between a positive side and a negative side of a po...