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:
Nov. 04, 2025
Filed:
Nov. 19, 2021
Katholieke Universiteit Leuven, Leuven, BE;
KATHOLIEKE UNIVERSITEIT LEUVEN, Leuven, BE;
Abstract
An ultrasonic transducer multilayer structure, including: a semiconductor layer stack defining a diode, a micro-machined ultrasonic transducer, MUT, layer stack being electrically in series with said diode and comprising a first electrically conductive layer disposed at least partly on the diode, a cavity extending over a region comprising at least a portion of the semiconductor layer stack and the first electrically conductive layer, wherein the MUT layer stack comprises a membrane extending at least partly over said region. The ultrasonic transducer multilayer structure may be used in a sensor apparatus for measuring at least one characteristic of an object. The sensor apparatus is used for medical imaging, such as cardiac imaging, obstetrics, gynecology, abdominal imaging, intravascular imaging, and mammography, or non-destructive testing (NDA), fingerprint sensors, range finders, gesture recognition, ultrasonic haptic feedback, ultrasonic communication or MEMs speakers.