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专利名称：High frequency wave absorbing ceramics发明人：Toshiki Saburi,Nobuyuki Ohya,Toru
Yamazaki,Taisei Katoh
申请号：US07/125712申请日：19871125公开号：US04840926A公开日：190620
摘要：A high frequency wave absorbing ceramics can be used, for example, as an EMIpreventive filter for interrupting high frequency waves intruding into electronic circuits.The high frequency wave absorbing ceramics are composed of a ternary compositioncomprising from 55 to 85 mol % of lead iron niobate Pb(Fe.sub.1/2 Nb.sub.1/2)O.sub.3,from 10 to 40 mol % of lead iron tungstate Pb(Fe.sub.2/3 W.sub.1/3)O.sub. 3 and notmore than 20 mol % of lead nickel tantalate Pb(Ni.sub.1/3 Ta. sub.2/3)O.sub.3 based onthe total 100 mol % of a composition composed of lead iron niobate Pb(Fe. sub.1/2Nb.sub.1/2)O.sub.3, lead iron tungstate Pb(Fe.sub.2/3 W.sub.1/3)O. sub.3 and lead nickeltantalate Pb(Ni.sub.1/3 Ta.sub.2/3)O.sub.3.
申请人：NIPPONDENSO CO., LTD.
代理机构：Cushman, Darby & Cushman
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