Patents Represented by Attorney Park & Associates IP Law LL

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  • Method of manufacturing a piezoelectric ceramic
    Patent number: 7467448
    Abstract: Disclosed are a piezoelectric ceramic structurally crystal-oriented through the crystallizing control of an amorphous material under an electric field and a method of manufacturing the same. The amorphous material is applied with an electric field to produce the crystal-oriented piezoelectric ceramic. The material is amorphous Li2B4O7 consisting of Li2O and B2O3 in a ratio of 1:2, and is employed in information technology, device technology, mechanical technology and so forth.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: December 23, 2008
    Assignee: Key Sung Metal Co., Ltd.
    Inventors: Yong Suk Yang, Su Jae Kim, Jong Soo Kim