Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2011-03-22
2011-03-22
Griffin, Walter D (Department: 1774)
Gas separation
Specific media material
Ceramic or sintered
C055S522000, C422S169000, C422S170000, C422S171000, C422S172000, C422S177000, C422S178000, C422S179000, C422S180000, C422S181000, C422S182000, C060S297000, C502S303000
Reexamination Certificate
active
07909904
ABSTRACT:
A method for producing a ceramic honeycomb structure comprises providing a honeycomb body having a side surface, a first cut end surface, a second cut end surface opposite the first end surface, and a maximum width (W), and removing material from at least one of the cut end surfaces of the honeycomb body to reduce the length (L), wherein the step of removing material comprises abrasively removing material from at least one of the ends with a rotating abrasive tool, such as by grinding, and wherein L/W is greater than 0.75. The method may achieve end flatness, parallelism, surface roughness and length accuracy, or combinations thereof which heretofore, were unachievable. Face finished ceramic honeycomb structures having low surface roughness (Ra), high degree of parallelism and accurate lengths are also disclosed.
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Corning Incorporated
Griffin Walter D
McNutt Matthew B.
Orlando Amber
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