ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,543, issued on March 17, was assigned to SEIKO EPSON Corp. (Japan).
"Method for manufacturing vibrator element" was invented by Keiichi Yamaguchi (Ina, Japan), Hiyori Sakata (Shinagawa, Japan), Shigeru Shiraishi (Ina, Japan) and Ryuta Nishizawa (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for manufacturing a vibrator element including a first vibration arm and a second vibration arm that each have a first surface and a second surface. The manufacturing method includes a preparation step of preparing a quartz crystal substrate, a first protective film forming step of forming a first protective film on a first su...