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:
Feb. 18, 2020
Filed:
Nov. 03, 2016
Chirp Microsystems, Inc., Berkeley, CA (US);
Stefon Shelton, Oakland, CA (US);
Andre Guedes, Lisbon, PT;
Richard Przybyla, Emeryville, CA (US);
Meng-Hsiung Kiang, Berkeley, CA (US);
David Horsley, Berkeley, CA (US);
CHIRP MICROSYSTEMS, INC., Berkeley, CA (US);
Abstract
A transducer includes first and second piezoelectric layers made of corresponding different first and second piezoelectric materials and three or more electrodes, implemented in two or more conductive electrode layers. The first piezoelectric layer is sandwiched between a first pair of electrodes and the second piezoelectric layer is sandwiched between a second pair of electrodes. The first and second pairs of electrodes contain no more than one electrode that is common to both pairs.