Treatment of water, waste water, or sewage (C02F3/00 - C02F9/00 take precedence)

Child Classifications

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• C02F 1/001 +3 CPC CPC only CPC only
• C02F 1/005 CPC only CPC only
• C02F 1/006 CPC only CPC only
• C02F 1/008 CPC only CPC only
• C02F 1/02 by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D) since 1980 +1 CPC IPC+CPC Available in IPC and CPC
• C02F 1/20 by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D) since 1980 IPC+CPC Available in IPC and CPC
• C02F 1/22 by freezing since 1980 IPC+CPC Available in IPC and CPC
• C02F 1/24 by flotation (C02F1/465 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
• C02F 1/26 by extraction since 1980 +1 CPC IPC+CPC Available in IPC and CPC
• C02F 1/28 by sorption (using ion-exchange C02F1/42; sorbent compositions B01J) since 1980 +5 CPC IPC+CPC Available in IPC and CPC
• C02F 1/30 by irradiation since 1980 +3 CPC IPC+CPC Available in IPC and CPC
• C02F 1/34 with mechanical oscillations since 1980 IPC+CPC Available in IPC and CPC
• C02F 1/38 by centrifugal separation since 1980 +1 CPC IPC+CPC Available in IPC and CPC
• C02F 1/40 Devices for separating or removing fatty or oily substances or similar floating material (cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; devices in sewers for separating liquid or solid substances from sewage E03F5/14, e.g. for use in drains leading to the sewer E03F5/16) since 1980 IPC+CPC Available in IPC and CPC
• C02F 1/42 by ion-exchange (ion-exchange in general B01J) since 1980 +3 CPC IPC+CPC Available in IPC and CPC
• C02F 1/44 by dialysis, osmosis or reverse osmosis since 1980 +6 CPC IPC+CPC Available in IPC and CPC
• C02F 1/46 by electrochemical methods since 1980 +4 CPC IPC+CPC Available in IPC and CPC
• C02F 1/48 with magnetic or electric fields (C02F1/46 takes precedence) since 1980 +4 CPC IPC+CPC Available in IPC and CPC
• C02F 1/50 by addition or application of a germicide or by oligodynamic treatment since 1980 +1 CPC IPC+CPC Available in IPC and CPC
• C02F 1/52 by flocculation or precipitation of suspended impurities since 1980 +8 CPC IPC+CPC Available in IPC and CPC
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