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:
Jun. 18, 2019
Filed:
May. 11, 2016
Applicant:
Measurement Specialties, Inc., Hampton, VA (US);
Inventor:
Minoru Toda, Lawrenceville, NJ (US);
Assignee:
MEASUREMENT SPECIALTIES, INC., Hampton, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/04 (2006.01); H01L 41/16 (2006.01); H01L 41/22 (2013.01); B06B 1/06 (2006.01); G10K 9/122 (2006.01); G10K 11/00 (2006.01);
U.S. Cl.
CPC ...
H01L 41/22 (2013.01); B06B 1/067 (2013.01); G10K 9/122 (2013.01); G10K 11/002 (2013.01);
Abstract
An ultrasonic transducer comprising a piezoelectric element, an acoustic matching layer arranged on a surface of the piezoelectric element and having a thickness of at least one-quarter of a wavelength of a center resonant frequency of the transducer, and a front metal layer arranged on a surface of the acoustic matching layer opposite that of the piezoelectric element and having a thickness equal to one-half of the wavelength of the center resonant frequency.