Gas separation – With nonliquid cleaning means for separating media – With heating or cooling means
Reexamination Certificate
2005-01-18
2005-01-18
Lawrence, Frank M. (Department: 1724)
Gas separation
With nonliquid cleaning means for separating media
With heating or cooling means
C055S482000, C055S487000, C055S523000, C055S524000, C055SDIG001, C055SDIG003, C060S299000, C060S311000, C423S213200, C423S213500, C423S215500, C422S177000
Reexamination Certificate
active
06843817
ABSTRACT:
The present invention provides a ceramic filter to be used at a high temperature, and it contains a substance having preferential reactivity with an ash component contained in materials captured by the ceramic filter and not removed by a high temperature treatment such as combustion over the principal component of the ceramic filter; the reaction between the ash component being not removed by a high temperature treatment such as combustion of the filter and remaining accumulated and the filter component to cause melting of the filter being suppressed to attain a long period of service.
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Noda Naomi
Yamada Kanji
Greene Jason M.
Lawrence Frank M.
NGK Insulators Ltd.
Parkhurst & Wendel L.L.P.
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