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:
Apr. 14, 2026
Filed:
Dec. 23, 2021
The University of Tokyo, Tokyo, JP;
THE UNIVERSITY OF TOKYO, , JP;
Abstract
An ultrasonic device is provided for transmitting ultrasonic waves. The ultrasonic device comprises an electrostatic drive device and an impedance matching layer. The electrostatic drive device includes a first electrode and a second electrode. The first electrode is a drive membrane and is disposed with tension applied at a position facing the second electrode. The second electrode has a through hole. At least one of the first electrode and the second electrode is a laminated membrane in which a plurality of materials with different conductivities are laminated. The impedance matching layer includes a matching membrane and gas. The matching membrane has a resonance loss equal to or less than transmitted acoustic power, and is disposed with tension applied at a position facing the first electrode. The gas is sealed between the matching membrane and the first electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile