| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
|---|
| 11/08/1977 | US4057495 Method for treating a waste water containing a nonionic surface active agent |
| 10/18/1977 | US4054526 Pressurized water treatment bottle |
| 10/18/1977 | US4054519 Hydraulic attrition unit for marine toilet |
| 10/18/1977 | US4054517 Chrome removal and recovery |
| 10/11/1977 | US4053403 Method of treating and degerminating bath water, particularly bath water contaminated by the germ bact. pseudomonas pyocanea, in medical tub-baths and underwater massage baths |
| 10/11/1977 | US4053399 Method and system for waste treatment |
| 10/11/1977 | US4053394 Process for separating and converting waste into useable products |
| 10/04/1977 | US4052301 Process for purifying waste water |
| 09/27/1977 | US4051039 Activated sewage plant and process |
| 09/20/1977 | US4049550 Water filtration module |
| 09/20/1977 | US4049545 Adding an alkaline coagulant to kill nitrifying bacteria, then an acidifying precipitating agent to cause aggregation of suspended solids |
| 09/13/1977 | US4048283 Removal of heavy metals from aqueous solutions |
| 09/06/1977 | US4046686 Reverse osmosis treatment of battery waste |
| 08/30/1977 | US4045347 System for pollution suppression |
| 08/30/1977 | US4045314 Using electrolytically produced hydrogen gas as fuel |
| 08/30/1977 | US4045171 Precipitating excess dye with group ia or iia halides or sulfates |
| 08/30/1977 | US4044696 Sewage disposal plant with evaporation/incineration means |
| 08/23/1977 | US4044106 Sodium hydroxide or carbonate |
| 08/23/1977 | US4043904 Waste water treatment method |
| 08/16/1977 | US4042509 Water treatment system |
| 08/16/1977 | US4042502 Detoxification of cyanides and cyanide-containing solutions |
| 08/16/1977 | US4042494 Pressure pipe treatment for sewage |
| 08/16/1977 | US4042473 Process for recovery of re-usable substances from a fixing bath in processes for development and fixing of photographic films and X-ray films |
| 08/16/1977 | US4041555 Marine holding tank |
| 08/09/1977 | US4040960 Waste water apparatus, pollution control |
| 08/09/1977 | US4040920 Chromium(vi)-containing; adding ferrous nitrate or chloride, neutralization with sodium hydroxide |
| 07/26/1977 | US4038184 Method of processing waste on ships and the like and arrangement for carrying out the method |
| 07/26/1977 | US4038071 Reduction of ion to free metal, precipitation |
| 07/12/1977 | US4035301 System for pollution suppression |
| 07/12/1977 | US4035296 Waste water, gases |
| 07/12/1977 | US4035269 Removal of mercury, chromium, copper compounds |
| 07/12/1977 | US4035228 From pulping process |
| 07/05/1977 | US4033875 Waste water treatment apparatus |
| 07/05/1977 | US4033867 Chromate reduction in aqueous medium |
| 07/05/1977 | US4033763 Process for recovery of selected metal values from waste waters |
| 07/05/1977 | US4032995 System and method for treating human waste |
| 06/21/1977 | US4030968 Disposal of paper pulp mill sludge |
| 06/14/1977 | US4029576 System for softening water |
| 06/14/1977 | US4029557 Treatment of water containing cyanide |
| 06/07/1977 | US4028427 Aqueous stream treatment in chlorinated hydrocarbon production |
| 05/24/1977 | US4025430 Removal of metal ions from waste water |
| 05/24/1977 | US4025426 Apparatus and method using activated carbon to purify liquid wastes |
| 05/17/1977 | US4024055 Lead oxide |
| 05/17/1977 | US4024054 Bubbles formed by cells of living organisms |
| 05/03/1977 | US4021347 Sewage treatment system |
| 04/19/1977 | US4018593 Process for recovering useful substances from culture media |
| 04/05/1977 | US4016180 Chemical concentration by adsorption |
| 03/29/1977 | US4014792 Reverse osmosis, storage |
| 03/29/1977 | US4014787 Agglomeration of small particles, filtration |
| 03/22/1977 | US4013562 Portable water filter |
| 03/22/1977 | US4013557 Sewage treatment apparatus |
| 03/15/1977 | US4012322 Macerator-sterilizer sewage treatment system |
| 03/15/1977 | US4012318 Adjusting ph |
| 03/08/1977 | US4011161 Treatment of waste water produced in the manufacture of expandable polystyrene |
| 02/22/1977 | US4009104 Marine sanitation method and device |
| 02/22/1977 | US4009101 Recycle treatment of waste water from nickel plating |
| 02/15/1977 | US4008161 Purification |
| 02/15/1977 | US4008159 Renovation of waste water |
| 02/08/1977 | US4007117 Polyelectrolyte flocculant |
| 02/08/1977 | US4007115 Process for treating spent monensic acid antibiotic fermentation broth containing relatively high concentrations of fatty and proteinaceous residues |
| 02/01/1977 | US4006081 Method for preventing gelation of thermosetting resins in waste water |
| 02/01/1977 | US4006080 Process for the treatment of acidic waste liquid containing dissolved salts |
| 01/25/1977 | US4005011 Method for treating effluent resulting from the manufacture of synthetic dyestuffs and related intermediate chemicals |
| 01/18/1977 | US4003833 Detoxification of aqueous waste streams containing cyanide |
| 01/18/1977 | US4003832 Method of applying ozone and sonic energy to sterilize and oxidize waste water |
| 01/11/1977 | US4002525 Chemical recovery from waste liquors utilizing indirect heat exchangers in multi-stage evaporation plus contact steam stripping |
| 12/28/1976 | US4000033 Removal of color and organic matter from kraft process bleach effluents |
| 12/21/1976 | US3998714 Two stage oxidation for disinfection of ammonia-materials |
| 11/30/1976 | US3994804 Sewage sludge treatment system |
| 11/16/1976 | US3991781 Apparatus for and method of automatically cleaning an obstructed valve |
| 11/09/1976 | US3990971 Metal cyanide complex compound disposal |
| 11/09/1976 | US3990969 Purification of waste water from sulphate pulp bleaching plants |
| 10/19/1976 | US3986953 Treatment of waste rolling oil |
| 10/19/1976 | US3986951 Aluminum compounds, precipitation, chlorine, sodium chloride, hydroxide, and hypochlorite |
| 10/19/1976 | US3986344 Method and means for reclaiming heat from a sewage disposal system |
| 10/12/1976 | US3985858 Treatment of zinc hydroxide slurry and recovery of zinc-containing product therefrom |
| 10/12/1976 | US3985648 Method and system for purifying liquid |
| 10/05/1976 | US3984314 Process for selective removal and recovery of cyanide values by ion exchange |
| 09/21/1976 | US3981965 Suppression of water pollution caused by solid wastes containing chromium compounds |
| 08/31/1976 | US3977970 Water treatment, saturation with air or gas, gravity filter |
| 08/24/1976 | US3976571 Extraction |
| 08/17/1976 | US3975257 Apparatus for removing particles and chemicals from a fluid solution |
| 08/17/1976 | US3975256 Apparatus for treatment of aqueous sewage composition |
| 08/17/1976 | US3975247 Treating sewage and recovering usable water and solids |
| 08/10/1976 | US3974075 Toilet system |
| 08/10/1976 | US3974070 Process for purifying tap water |
| 08/10/1976 | US3973987 Reverse osmosis |
| 08/03/1976 | US3972811 Waste converter system and method |
| 07/27/1976 | US3971947 Ultraviolet water purifier |
| 07/27/1976 | US3971338 Aquarium apparatus |
| 07/20/1976 | US3970553 Heavy metal adsorbent process |
| 07/13/1976 | US3969246 From waste water |
| 07/13/1976 | US3968756 Method for incineration of a sludge containing chromium substance and apparatus therefor |
| 06/22/1976 | US3965006 Liquid waste disposal |
| 06/08/1976 | US3962077 Process for the purification of waste waters |
| 06/01/1976 | US3961027 Cyclic process for re-use of waste water generated during the production of UO2 |
| 06/01/1976 | US3960725 Method for sludge treatment |
| 06/01/1976 | US3960723 Magnetization of iron chromium system |
| 05/25/1976 | US3959144 Apparatus for biological and chemical purification of water by agglomeration |
| 05/25/1976 | US3959133 Alum recovery and waste disposal in water treatment |