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:
Oct. 14, 2025
Filed:
Aug. 18, 2020
Vermon SA, Tours, FR;
Cyril Meynier, Tours, FR;
Dominique Gross, Tours, FR;
VERMON SA, Tours, FR;
Abstract
An ultrasonic device, comprising an ultrasonic transducer () comprising: a membrane () suspended above a cavity () arranged on the upper surface side of a substrate (); a piezoelectric layer () attached to a surface of the membrane (); a first electrode (E) arranged on the lower surface side of the cavity (); and a second electrode (E) arranged on the upper surface side of the cavity (), in contact with the piezoelectric layer (), the device further comprising a control circuit (CTRL) connected to the first (E) and second (E) electrodes and capable of applying a first control voltage (VDC) on the first electrode (E), and a second control voltage (VAC) different from the first voltage on the second electrode (E).