78525738
Dec 2, 2004
Mar 14, 2006
Active Trademark
ceramic particles used in the foundry industry to make castings and abrasive grains sold as an unfinished product for industrial use
Chemicalsceramic pellets, shots, or spheres for use in oil well and gas well hydraulic fracturing operations and as a gravel pack material for sand control operations
Nonmetallic Building Materials