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:
Jul. 12, 1988
Filed:
Jun. 02, 1986
NEC Corporation, Tokyo, JP;
Abstract
A piezoelelectric transducer usable preferably as a high-frequency ultrasonic probe for diagnostic inspection and the process for preparation thereof are disclosed. The piezoelectric transducer comprises a piezoelectric material layer, a pair of electrode layers formed respectively on the opposite surfaces of said piezoelectric material layer and for applying electric load across the piezoelectric material layer to thereby generate acoustic oscillation or for measuring electric energy generated due to the acoustic oscillation of the piezoelectric material layer, and an acoustic matching section containing at least one quarter-wave matching layer and formed on one of the electrode layers. The acoustic matching section includes an elelctric conductive layer therein. The acoustic matching section is formed by electro deposition, preferably by the electro painting method or electrophoretic method. The ultrasonic probe can be prepared of a frequency band higher than 7.5 MHz, even higher than 10 MHz and provides a clear image of a shallow portion from the surface of an object to be inspected such as a human body.