U.S. federal trademark · Serial No. 72140699 · Reg. No. 0749282
ADDITIVES FOR DRILLING MUD USEFUL IN MAKING AN INVERT (WATER-IN-OIL) EMULSION DRILLING MUD-NAMELY, A LIQUID BLEND OF TEMPERATURE STABLE OIL AND WATER DISPERSIBLE HIGHLY POLYMERIZED FATTY MATERIAL WHICH WILL SERVE AS THE PRIMARY EMULSIFIER IN THE PREPARATION OF A WATER-IN-OIL EMULSION; AND A CONCENTRATE CONSISTING OF A MIXTURE OF CLAY, INORGANIC SALT AND AN ORGANIC CLAY TREATING AGENT IN THE FORM OF A DRY POWDER, WHICH WILL SERVE TO SUPPORT THE PRIMARY EMULSIFYING ACTION OF SAID LIQUID BLEND
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