Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 27, 2009
Patent Application Number
10949742
Date Filed
September 24, 2004
Patent Primary Examiner
Patent abstract
There are provided steps of polarizing a ceramic composition including a perovskite compound containing Pb, Zr, Ti and Mn as main components and a heat treatment step for keeping the polarized ceramic composition within a temperature range lower than Tc (Tc denoting the Curie temperature of the ceramic composition) for 1 to 100 minutes.
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