The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2020
Filed:
Oct. 30, 2018
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Yoshihisa Inoue, Nagaokakyo, JP;
Toshio Nishimura, Nagaokakyo, JP;
Keisuke Takeyama, Nagaokakyo, JP;
Ryota Kawai, Nagaokakyo, JP;
Yuichi Goto, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;
Abstract
A resonator that includes a base and one or more vibration arms with fixed ends connected to a front end of the base and open ends extending therefrom. Moreover, the vibration arms include first and second electrodes and a piezoelectric film that is disposed therebetween. The resonator further includes a protective film disposed opposing an upper face of the piezoelectric film and sandwiching the first electrode and a temperature characteristics adjusting film formed of a material different from a material of the protective film and that is provided on the fixed end side relative to the center of the vibration arms such that part of the protective film is exposed to a surface.