Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process and apparatus for purifying waste waters

Process and apparatus for purifying waste waters

US Patent 4236974 · Granted Dec 2, 1980

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Calorimeter1985
Brushless D-C motor1983
Process and apparatus for the concentration of an alkaline solution1983
Process and apparatus for the concentration of an alkaline solution1982
Reversible direct current motor with a permanent magnet rotor and electronic com1981
Control signal transmitter for the commutating device of an electronically commu1981
Electronic motor having a multi-pole external rotor1981
Process for purifying polluted fluids1981
Evaporator for concentrating mineral acid, particularly sulphuric acid1981
Direct current motor with polyphase stator winding and electronic commutating de1980
Heat transfer installation having storage reservoir containing a salt as a heat 1980