Liquid purification or separation – Filter – Material
Reexamination Certificate
2011-06-21
2011-06-21
Kim, John (Department: 1777)
Liquid purification or separation
Filter
Material
C075S303000, C075S325000, C075S326000, C075S327000, C075S236000, C210S488000, C210S490000, C210S503000, C210S504000, C210S505000, C210S506000, C210S509000, C210S510100, C501S080000, C501S081000, C501S082000, C501S083000
Reexamination Certificate
active
07963402
ABSTRACT:
The present invention relates to a ceramic filter device for molten metal filtration comprising a major ceramic phase and a minor carbon phase bonded by phosphate bond, a method for producing such filter devices, and the use of such filter devices for the filtration of molten steel.
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Kim John
RatnerPrestia
Sud-Chemie Hi-Tech Ceramics Inc.
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