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:
May. 13, 2025
Filed:
Mar. 08, 2022
Rohm Co., Ltd., Kyoto, JP;
Takashi Naiki, Kyoto, JP;
Takaya Nagahata, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
Abstract
A transducer includes a piezoelectric element that includes a piezoelectric membrane which is interposed between a pair of electrodes, a membrane body that includes a vibration membrane displaceable in a membrane thickness direction, the piezoelectric element being laminated on the vibration membrane, a package that includes an internal space which houses the piezoelectric element and the membrane body, and an abutment pad that is disposed in the internal space and limits displacement of the vibration membrane by abutting the piezoelectric element or the vibration membrane when the vibration membrane is displaced in the membrane thickness direction.