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US 6,479,923 B1Granted
Piezoelectric ceramic, method for producing piezoelectric ceramic, and piezoelectric oscillator
AssigneeMurata Manufacturing Co., Ltd.
InventorsAkihito Okuda, Akinobu Takamura, Masataka Kida, Yoshiaki Kohno
Life of this patent
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Abstract
A piezoelectric ceramic comprising lead titanate as a primary component, wherein the primary component contains a titanium oxide crystalline phase. Methods for producing the ceramic, and piezoelectric oscillators making use of the ceramic are also disclosed.
Claims4
A piezoelectric ceramic comprising a lead titanate phase containing dispersed therein a titanium oxide crystalline phase, wherein the average grain size of the titanium oxide crystalline phase is about 4-28 μm.
Dependencies are inferred from the claim text.