Research/Patents/US 4977547
US 4977547

METHOD OF DETECTING SOUND IN WATER USING PIEZOELECTRIC-POLYMER COMPOSITES WITH O-3 CONNECTIVITY

Assignee

Filed

Nov 15, 1988

Granted

Dec 11, 1990

Location

STATE COLLEGE PA US

Abstract

A hydrophone device is provided with a piezoelectric ceramic-polymer composite of 0-3 connectivity in which the piezoelectric filler comprises a solid solution of PBTiO3 -BiFeO3 wherein the solid solution contains 50-80 wt. % of the BiFeO3. The piezoelectric ceramic-polymer composite has large hydrostatic piezoelectric charge and voltage coefficients which are desirable in hydrophone devices.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 29, 1989

Rescinded

Jul 12, 1990

Duration

10 months

Inventor

  • 1JAYNE R. GINIEWICZ

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records