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:
Jan. 27, 2026
Filed:
Dec. 14, 2020
Université DE Lille, Lille, FR;
Centrale Lille Institut, Villeneuve d'Ascq, FR;
Université Polytechnique Hauts-de-france, Valenciennes, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Yncrea Hauts DE France, Lille, FR;
Sorbonne Université, Paris, FR;
Michaël Boudoin, Lezennes, FR;
Jean-Louis Thomas, Montgeron, FR;
Antoine Riaud, La Roche sur Yon, FR;
Olivier Boumatar, Lille, FR;
Abstract
An electroacoustic device for generating an acoustic wave includes: a piezoelectric substrate; first electrodes arranged on the piezoelectric substrate, each first electrode including first tracks that spiral around a spiral axis in a first winding direction; and second electrodes arranged on the piezoelectric substrate, each second electrode including second tracks that spiral around the spiral axis in a second winding direction opposite to the first winding direction.