U.S. federal trademark · Serial No. 86333002 · Reg. No. 4695359
Ammonia for industrial purposes; Bentonite; Calcined clay; Chemical additives for drilling muds; Chemical additives for oils; Chemicals for industrial purposes; China clay; Drilling muds for use in oil well drilling; Inorganic salts for industrial purposes; Salts of alkaline metals
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.