Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including specified molding pressure or controlling of...
Reexamination Certificate
2008-03-25
2008-03-25
Lopez, Carlos (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including specified molding pressure or controlling of...
C264S122000, C264S125000, C264S669000
Reexamination Certificate
active
07347966
ABSTRACT:
A method for manufacturing a ceramic heater includes mixing a conductive ceramic powder, an insulating ceramic powder, a sintering aid powder, and a solvent so as to obtain a slurry, drying the slurry so as to obtain a heating-element material powder, forming a green resistance-heating element from the heating-element material powder, embedding the green resistance-heating element in a ceramic substrate, and firing a resultant assembly. Water is used as the solvent. Drying of the slurry is performed by use of a fluidized-bed drying apparatus, a rotary drying apparatus, or a vibratory drying apparatus and, the apparatus being employed in combination with a medium for pulverization.
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Perry's Chemical Engineer's Handbook, 7thEdition, 1997, Sections 12 and 14.
Lopez Carlos
Lowe Hauptman & Ham & Berner, LLP
NGK Spark Plug Co. Ltd.
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