Inventor

SELL GUENTHER

DE3 patents

Patents

3 patents

US4251371AFeb 17, 1981

Device for the biological purification of waste water

HOECHST AG14 citations69

US4381268AApr 26, 1983

Device for gassing liquids or suspensions

HOECHST AG4 citations59

US4517093AMay 14, 1985

Process for the biological purification of waste water

HOECHST AG2 citations58