6
Nalco Act. Nalco Chemical Company, Nalco September 2000: US 75802836 (1. Chemicals)


8
Nalsperse. Nalco Chemical Company, Nalco, Edward O Yonter April 2000: US 75737288 (1. Chemicals)

9
Ironguard. Nalco Chemical Company, Nalco, Edward O Yonter April 2000: US 75681723 (1. Chemicals)