U.S. federal trademark · Serial No. 72465949 · Reg. No. 0993557
LIGNOSULPHONIC ACID COMPOUNDS AND PARTIALLY OR SUBSTANTIALLY DESULPHONATED DERIVATIVES OR MODIFICATIONS OF THE SAME, INCLUDING COMPOSITIONS OF MATTER CONTAINING A SUBSTANTIAL PROPORTION OF THE ABOVE MATERIALS FOR USE IN THE FIELDS OF DISPERSANTS, EMULSIFIERS, DEFLOCCULANTS, FLOTATION AGENTS, EXTENDERS, GRINDING AIDS, DRILLING MUDS AND ADHESIVES
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