| Patents for B01D 37 - Processes of filtration (4,716) |
|---|
| 11/06/1979 | US4173419 Rotary mixer |
| 10/02/1979 | CA1063740A1 Process for dewatering sludge-type material and an installation for carrying out the process |
| 09/18/1979 | US4168236 Consecutive, independent dewatering apparatus for improved sludge treatment |
| 09/11/1979 | CA1062171A1 Oil filter with oil additive generator |
| 08/22/1979 | EP0003499A1 Process for the manufacture of water-soluble condensation products, their use in papermaking and process-aids containing these condensation products |
| 08/21/1979 | US4165283 Multi-stage purification system |
| 08/07/1979 | CA1059926A1 Purification of papermarking waste water using pulp stock rejects as filter aid |
| 07/31/1979 | US4162973 Water polishing system |
| 07/10/1979 | US4160734 For removing liquid, solid and semi-solid wastes |
| 06/26/1979 | US4159248 Denatering, sewage treatment |
| 06/19/1979 | US4158627 Method and apparatus for extracting waste material |
| 06/12/1979 | US4157962 Filtration method and apparatus |
| 06/05/1979 | US4157305 Drying and centrifuging |
| 05/29/1979 | US4156649 Dewatering ore concentrates with branched alkyl ethoxylated alcohol |
| 05/29/1979 | CA1055293A1 Method and device for dewatering of suspensions |
| 05/08/1979 | US4153552 Method for regenerating filters |
| 05/08/1979 | US4153549 Sodium dialkyl sulfosuccinates as dewatering aids in the filtration of mineral concentrates |
| 05/01/1979 | US4152261 Process and a filter for filtering a liquid containing solids having a substantially different specific gravity relative to the liquid |
| 04/24/1979 | US4151080 Continuously monitoring dewatering of slurry |
| 03/27/1979 | US4146473 Dewatering of mineral suspensions |
| 03/22/1979 | WO1979000129A1 Purifying process and device for waste waters in a multi-stage filtering installation |
| 03/21/1979 | EP0001101A2 Process and apparatus for the purification of waste water in a multistage filter device |
| 03/20/1979 | US4145284 Method for making polymeric filter aids and products thereof |
| 03/13/1979 | US4144169 Filter unit |
| 03/13/1979 | US4144166 Compositions, apparatus and methods useful for releasing solid lubricating oil additive |
| 03/13/1979 | CA1050440A1 Filtering with constant pressure drop across medium |
| 03/06/1979 | CA1049702A1 Sewage system with reusable flush medium |
| 02/27/1979 | US4141824 Tangentially fed upflow sand filter method and apparatus |
| 02/22/1979 | WO1979000086A1 Method and apparatus for regenerating filters |
| 02/13/1979 | CA1048338A1 Apparatus for processing cattle excrement |
| 01/30/1979 | US4137396 Filtration process for purifying polyols |
| 01/30/1979 | CA1047657A1 Backwash recovery |
| 01/23/1979 | CA1046946A1 Continuous or semi-continuous filtering method |
| 01/16/1979 | US4134857 Use of tannic or gallic acid to produce low beverage soluble iron content filter aid |
| 01/16/1979 | CA1046427A1 Filter cake removal by applying detaching coating to filter bands |
| 01/11/1979 | WO1979000012A1 Automatic control of the closing strength needed for making tight the filter elements in a press filter |
| 01/02/1979 | US4132642 Process for filtering a cellulose acetate solution |
| 11/28/1978 | US4127440 Process for purifying waste water obtained by a papermaking process |
| 11/14/1978 | US4125466 Treatment of sludge comprising biological aggregate |
| 10/10/1978 | CA1040108A1 Process and device for filtering media |
| 10/03/1978 | US4118778 Method of and an apparatus for controlling the quantity of filter aid fed to a sedimentation filter in a given unit of time during filtration |
| 10/03/1978 | US4118319 Treatment of sludge |
| 09/12/1978 | US4113618 Method of and apparatus for solid-liquid separation |
| 08/29/1978 | US4110218 Liquid cleaning apparatus having cyclonic separators |
| 08/08/1978 | US4105558 Apparatus for draining of muddy liquids |
| 08/08/1978 | US4105550 Preparation of sterile products |
| 08/08/1978 | US4105547 Filtering process |
| 08/01/1978 | US4104164 Recirculating filter |
| 05/30/1978 | US4092245 Liquid purification method |
| 04/25/1978 | US4086266 Filtering through a desorbed, sterilized teflon filter element |
| 04/25/1978 | US4086166 Water filtering and dispensing apparatus |
| 03/28/1978 | US4081376 Emergency running apparatus in a filtering apparatus |
| 03/07/1978 | US4077880 Sieves, sand pack |
| 03/07/1978 | US4077133 Procedure for dehydrating and drying fine-grained products and in addition a device to be used for the execution of the procedure |
| 02/21/1978 | US4075098 Masking elements for dissolving oil improving body in an oil filter |
| 02/21/1978 | US4075097 Soluble polymer containing oil additives |
| 01/24/1978 | US4070175 For fertilizers |
| 01/03/1978 | US4066559 Additive permeable |
| 12/20/1977 | US4064071 Mixing with aqueous alkali metal silicates, drying |
| 12/13/1977 | US4062779 Apparatus for thickening and extracting the liquid from a sludge |
| 12/13/1977 | US4062776 Sludge concentrator and conditioner |
| 12/13/1977 | US4062669 N-Organo-N-phosphonomethylglycine-N-oxides and plant growth regulant and phytotoxicant compositions containing same |
| 12/06/1977 | US4061572 Oil filter |
| 11/08/1977 | US4057496 Method and device for filtration |
| 11/01/1977 | US4056363 Apparatus for the fabrication of pure alumina from Al2 O3 and silica containing raw materials by leaching with hydrochloric acid |
| 10/11/1977 | US4053413 Apparatus for removing particles from water for sprinklers and the like |
| 10/11/1977 | US4053397 Method of recovering backwash liquid with exhausted resin |
| 09/27/1977 | US4051039 Activated sewage plant and process |
| 09/27/1977 | US4051033 Filter device |
| 09/13/1977 | US4048071 Liquid filtering device |
| 09/06/1977 | US4046690 Filtering coal-derived oil through a filter media precoated with particles partially solubilized by said oil |
| 08/30/1977 | US4045342 Method and apparatus for filtering |
| 08/23/1977 | US4043917 Liquid filter apparatus |
| 08/09/1977 | US4040960 Waste water apparatus, pollution control |
| 08/02/1977 | US4039305 Apparatus for removing gas from a liquid system |
| 06/14/1977 | US4029579 Of a fiber and liquid |
| 05/31/1977 | US4026806 Filter including fluid-flow control |
| 05/10/1977 | US4022691 Mixing chamber for thickening sewage sludge by means of a flocculation agent combined with overflow drainage means |
| 04/19/1977 | US4018899 Process for recovering feed products from animal manure |
| 04/19/1977 | US4018681 Filtration of cellulosic solutions |
| 04/12/1977 | US4017399 Method and apparatus for filtration of slurries |
| 04/12/1977 | US4017395 Recirculating sewerage system |
| 03/29/1977 | US4014794 Oil filter adapter |
| 03/29/1977 | US4014790 Apparatus for recycling filtration media |
| 03/29/1977 | US4014788 Removing of bark fines from aqueous suspensions |
| 03/29/1977 | US4014474 Method for treating particulate masses from complex ores or ore products by froth flotation |
| 01/04/1977 | US4001115 Filtration system with storage and dilution reservoirs |
| 12/14/1976 | US3997441 Pressure filter separator |
| 11/16/1976 | US3992293 Method of filtering liquids containing dissolved carbon dioxide |
| 11/16/1976 | US3991781 Apparatus for and method of automatically cleaning an obstructed valve |
| 11/09/1976 | US3990973 Apparatus for measuring ultrafiltration rate |
| 11/02/1976 | US3989184 Apparatus for collecting and classifying a mixture of solid, gaseous and liquid constituents |
| 10/05/1976 | US3983871 Apparatus for direct blood transfusion |
| 09/07/1976 | US3979289 Filtration method |
| 08/31/1976 | US3977973 Fry kettle with integral continuous filter |
| 08/17/1976 | US3975274 Process and device for filtering media |
| 08/17/1976 | US3974528 Sewage system with reusable flush medium |
| 08/10/1976 | US3974068 Ultrafiltration process and apparatus using low hydrostatic pressure to prevent concentration polarization |
| 08/03/1976 | US3972779 Means for controlling dewaxing apparatus |
| 07/27/1976 | US3971720 Method of and apparatus for processing cattle excrement |