Process for the manufacture of ceramic articles,and product derived from such process

Claim 2

A PROCESS FOR MANUFACTURING CERAMIC ARTICLES, INCLUDING THE STEPS OF PRODUCING A SUBSTANTIALLY UNIFORM MIXTURE OF A PLURALITY OF CERAMIC MATERIAL INCLUDING CLAY IN PROPORTIONS DETERMINED BY A PARTICULAR END PRODUCT TO BE PRODUCED, DIVIDING UP THE MIXTURE INTO PORTIONS TO WHICH ARE IMPARTED ANY SHAPE WITHOUT ANY PREDEERMINED RELATION TO THE SHAPE OF ANY END PRODUCT TO BE PRODUCED, REACTING THE SHAPED MIXTURE BY HEATING TO A TEMPERATURE OF PREDETERMINED MAGNITUDE SUFFICIENT TO CARRY TO A DESIRED END POINT EFFECTUATION OF CHEMICAL AND PHYSICAL CHANGES IN THE SHAPED MIXTURE, DISINTEGRATING THE REACTION PRODUCT INTO THE FINE PARTICLES, ELIMINATING FROM THE DISINTEGRATED PARTICLES ALL PARTICLES OF A SIZE OUTSIDE CERTAIN PREDETERMINED LIMITS, MAKING A CERAMIC SUSPENSION OF THE PARTICLES WITHIN THE PREDETERMINED LIMITS IN A CARRIER LIQUID UNDER CONTROLLED VSOSITY CONDITIONS, FORMING A CERAMIC CASTING FROM THE CERAMIC SUSPENSION BETWEEN OPPOSED MOLD FACES ONE OF WHICH IS PERVIOUS TO AND AN ABSORBENT FOR THE CARRIER LIQUID AND THE OTHER IS IMPERVIOUS TO AND DOES NOT ABSORB THE CARRIER LIQUID SO THAT THE CERAMIC PARTICLES DEPOSIT AND BUILD UP SUBSTANTIALLY ONLY ON THE PERVIOUS FACE, SEPARATING THE CASTING FROM THE MOLD, AND SINTERING THE CASTING AT A TEMPERATURE SUBSTANTIALLY BELOW THE REACTION TEMPERATURE.

Claim 3

A PROCESS FOR MANUFACTURING CERAMIC ARICLES, INCLUDING THE STEPS OF PRODUCING A SUBSTANTIALLY UNIFORM VISCOUS MIXTURE OF A PLURALITY OF CERAMIC MATERIALS INCLUDING CLAY IN A MIXTURE LIQUID IN PROPORTIONS DETERMINED BY A PARTICULAR END PRODUCT TO BE PRODUCED, DIVIDING UP THE VISCOUS MIXTURE INTO RELATIVELY SMALL PORTIONS TO WHICH ARE IMPARTED ANY SHAPE WITHOUT ANY PARTICULAR RELATION TO THE SHAPE OF ANY END PRODUCT TO BE PRODUCED, REACTING THE SHAPED MIXTURE BY HEATING TO A TEMPERATURE OF PREDETERMINED MAGNITUDE SUFFICIENT TO CARRY TO A DESIRED END POINT EFFECTUATION OF CHEMICAL AND PHYSICAL CHANGES IN THE SHAPED MIXTURE, DISINTEGRATING THE REACTION PRODUCT INTO FINE PARTICLES, PROCESSING THE DISINTEGRATED PARTICLES TO RETAIN ONLY PARTICLES OF A SIZE OF 44 MICRONS OR SMALLER AND OF WHICH PROCESSED PARTICLES NOT MORE THAN BETWEEN 9.5% AND 35% ARE OF THE SIZE OF 1 MICRON OR SMALLER, MAKING A CERAMIC SUSPENSION OF THE PROCESSED PARTICLES IN A CARRIER LIQUID UNDER CONTROLLED VISCOSITY CONDITIONS, FORMING A CASTING FROM THE CERAMIC SUSPENSION BETWEEN OPPOSED MOLD FACES ONE OF WHICH IS PERVIOUS TO AND AN ABSORBENT FOR THE CARRIER LIQUID AND THE OTHER IS IMPERVIOUS TO AND DOES NOT ABSORB THE CARRIER LIQUID SO THAT THE CERAMIC PARTICLES DEPOSIT AND BUILD UP SUBSTANTIALLY ONLY ON THE PERVIOUS FACE, SEPARATING THE CASTING FROM THE MOLD, AND SINTERING THE CASTING AT A TEMPERATURE SUBSTANTIALLY BELOW THE REACTION TEMPERATURE.

Claim 4

A PROCESS FOR MANUFACTURING CERAMIC ARICLES, INCLUDING THE STEPS OF PRODUCING A SUBSTANTIALLY UNIFORM VISCOUS MIXTURE OF A PLURALITY OF CERAMIC MATERIALS INCLUDING CLAY IN A MIXTURE LIQUID IN PROPORTIONS DETERMINED BY A PARTICULAR END PRODUCT TO BE PRODUCED, DIVIDING UP THE VISCOUS MIXTURE INTO RELATIVELY SMALL PORTIONS TO WHICH ARE IMPARTED ANY SHAPE WITHOUT ANY PARTICULAR RELATION TO THE SHAPE OF ANY END PRODUCT TO BE PRODUCED, REACTING THE SHAPED MIXTURE BY HEATING TO A TEMPERATURE OF PREDETERMINED MAGNITUDE SUFFICIENT TO CARRY TO A DESIRED END POINT EFFECTUATION OF CHEMICAL AND PHYSICAL CHANGES IN THE SHAPED MIXTURE, DISINTEGRATING THE REACTION PRODUCT INTO FINE PARTICLES, PROCESSING THE DISINTEGRATED PARTICLES TO RETAIN ONLY PARTICLES OF A SIZE OF 44 MICRONS OR SMALLER AND OF WHICH PROCESSED PARTICLES NOT MORE THAN BETWEEN 9.5% AND 35% ARE OF THE SIZE OF 1 MICRON OR SMALLER, MAKING A CERAMIC SUSPENSION OF THE PROCESSED PARTICLES IN A CARRIER LIQUID UNDER CONTROLLED VISCOSITY CONDITIONS, FORMING A CASTING FROM THE CERAMIC SUSPENSION BETWEEN OPPOSED MOLD FACES ONE OF WHICH IS PERVIOUS TO AND AN ABSORBENT FOR THE CARRIER LIQUID AND THE OTHER IS IMPERVIOUS TO AND DOES NOT ABSORB THE CARRIER LIQUID SO THAT THE CERAMIC PARTICLES DEPOSIT AND BUILD UP SUBSTANTIALLY ONLY ON THE PERVIOUS FACE, SEPARATING THE CASTING FROM THE MOLD, AND SINTERING THE CASTING AT A TEMPERATURE SUBSTANTIALLY BELOW THE REACTION TEMPERATURE.