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. 02, 1996
Filed:
Oct. 28, 1994
Yu Jin, Chicago, IL (US);
Shrinivas G Joshi, Brookfield, WI (US);
Other;
Abstract
A new type of acoustic wave which is nearly polarized in the shear horizontal direction, and which can propagate in thin elastic plates if the ratio h/.lambda. is less than about 3 where h is the plate thickness and .lambda. is the acoustic wavelength. Attractive properties of this quasi-SH wave include: (i) nearly nondispersive propagation, (ii) very large value of K.sup.2, the electromechanical coupling coefficient, and (iii) ability to propagate in contact with a liquid medium without suffering excessive attenuation. The nondispersive propagation and large value of K.sup.2 makes the wave attractive for use in signal processing and sensing devices. Further, the fact that the wave can propagate in contact with a liquid medium allows the wave to be used in sensors that have to operate in contact with a liquid medium.