73167794
Apr 24, 1978
Nov 4, 1980
Chemicals and Chemical Compositions for Water Treatment-Namely, Oxygen Scavengers, Deposit Control Agents, Polymers, Paper-Making Chemicals, Emulsion Breakers, Crystallization Inhibitors, Sludge and Wastewater Conditioners, Scale-Removal Agents, Drainage Aids, Antioxidants, Resin Cleaners, and Oil Recovery Compounds; and Chemicals and Chemical Compositions for Use as Fuel Conditioners and for the Treatment of Internal Boiler or Furnace Systems-Namely, Fireside, Slag and Cold-End Additives, and Furnace Ash Conditioners
Chemicals