Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 37 - Processes of filtration
Patents for B01D 37 - Processes of filtration (4,716)
07/1981
07/08/1981EP0031522A2 Process for the filtration of beverages
07/08/1981EP0031346A1 Dry cleaning of pressure filters for liquids.
07/07/1981US4277337 Deposit filtering apparatus for filtering turbid liquids
07/07/1981US4277336 Cleaning solvents
06/1981
06/23/1981US4274971 Filtration process using polyolefin fibrids as filter aids
06/23/1981US4274966 Method and device for purifying sewage
05/1981
05/26/1981US4269707 Apparatus and method
05/19/1981CA1101568A1 Filtration aid
05/05/1981US4265748 Lubricant filter for internal combustion engines
04/1981
04/07/1981US4260489 Treatment of oily sludge
04/07/1981US4260485 Filtration of a coal liquid slurry using polyisobutylene and an alcohol
04/01/1981EP0026069A1 Apparatus and method for separating entrained particulate matter from a conveying fluid
03/1981
03/24/1981US4257259 Continuous analysis of beverages
03/18/1981EP0025314A2 Method of cleaning a filter press and filter press
03/18/1981EP0025257A1 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer
03/18/1981EP0025256A1 Filtration of a coal liquid slurry using polyisobutylene and an alcohol
03/10/1981US4255269 Method and apparatus for adapting the composition of a drilling fluid for use in making a hole in the earth by rotary drilling
03/10/1981US4255261 Separation drum for belt filter with suction recovery of solids
03/10/1981US4255258 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer and an alcohol
03/03/1981US4254255 Aqueous reaction of polyamine with alkylene dihalide in presence of emulsifier
02/1981
02/24/1981US4252648 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer
02/24/1981US4252647 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer
02/24/1981US4252646 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer and an alcohol
02/19/1981WO1981000359A1 Method and filter for separating filterable particles from a liquid suspension
02/17/1981US4251364 Dissolved in hydrocarbon oil
02/17/1981CA1096067A1 Ore beneficiation
02/11/1981EP0023899A1 Device for dewatering aqueous suspensions and slurries
02/10/1981US4250032 Filtration, fluidizing with sea water, neutralizing soda
01/1981
01/27/1981US4247395 Sewage treatment process and apparatus
01/22/1981WO1981000058A1 Dry cleaning of pressure filters for liquids
01/21/1981EP0022463A1 Settling-filter device for the filtration of turbid liquids, and filtration process using such a device
01/20/1981US4246102 Water treatment by precipitation filtration and flocculation
01/20/1981US4245483 System for purifying contaminated refrigerant and reproducing the same for use with freezing liquid spray refrigerator
01/13/1981US4244905 Method and apparatus for the manufacture of mold bodies, particularly pellets from secondary slurries of the metallurgical industry
01/13/1981CA1093749A1 Expanded styrene-polymers and polyolefin micro-bits and their preparation
01/07/1981EP0021811A1 Method of and apparatus for treating liquid stored in a machine tool system settling tank
12/1980
12/23/1980US4240910 Method and apparatus for clarifying coke quenching water
12/10/1980EP0019928A1 Solid-liquid separation process
12/09/1980US4238334 Purification of liquids with treated filter aid material and active particulate material
12/09/1980US4238331 Process for treating sea water containing waxy lipids
12/09/1980US4238329 Coating filter with mixture of diatomaceous earth; adding mixture upstream; complexing
11/1980
11/26/1980EP0019552A1 Process for the purification of waste water and/or industrial water containing hydrocarbons
11/26/1980EP0019351A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer
11/26/1980EP0019350A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer and an alcohol
11/26/1980EP0019176A1 Process for dewatering waste water sludges on compartment filter presses
11/18/1980US4234429 System for separating particulate matter into soluble and insoluble portions
11/13/1980WO1980002386A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer and an alcohol
11/13/1980WO1980002385A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer
11/13/1980WO1980002384A1 Filtration of a coal liquid slurry using polyisobutylene
11/13/1980WO1980002383A1 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer and an alcohol
11/13/1980WO1980002382A1 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer
11/13/1980WO1980002381A1 Filtration of a coal liquid slurry using polyisobutylene and an alcohol
11/12/1980EP0018721A1 Filtration of a coal liquid slurry using polyisobutylene
11/12/1980EP0018720A1 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer and an alcohol
11/04/1980US4231868 With a dewatering aid comprising n-substituted sulfosuccinamate
11/04/1980US4231665 Filter aid dispensing arrangement
10/1980
10/28/1980US4230574 Method for filtering frying oil
10/21/1980US4229297 Method of separating oil from oil-containing liquid
10/14/1980US4228004 Method and apparatus for removal of by-products of chemical vapor deposition from oil for vacuum pump
10/14/1980US4227999 Ultrafiltration process and apparatus
10/07/1980US4226716 Rotary filter
10/07/1980US4226715 Apparatus and method for separating entrained particulate matter from a conveying fluid
10/07/1980CA1087110A1 Apparatus for removing gas from a liquid system
10/01/1980EP0016220A1 Process of filtration.
09/1980
09/30/1980US4225433 Adding a flocculant
09/30/1980US4224821 Apparatus and method for sensing the quality of dewatered sludge
09/23/1980US4224153 Process and a filter for filtering a liquid containing solids having a substantially different specific gravity relative to the liquid
09/23/1980US4224135 Cross-flow electrofilter and method
09/16/1980US4222873 Plate and frame filter press having modified flow pattern method
08/1980
08/26/1980CA1084489A1 Filtration process for purifying polyols
08/19/1980US4218316 Method of clarifying and removing water from water-solids suspensions
08/19/1980CA1084182A1 Method for separating pollutants from liquid
07/1980
07/01/1980US4210537 Liquid treatment apparatus
06/1980
06/10/1980US4207186 Alcohols and ethers
06/03/1980US4206063 Dewatering aid composition
05/1980
05/27/1980US4204962 Continuous analysis of beverages
05/20/1980CA1077862A1 Removing of bark fines from aqueous suspensions
05/13/1980US4202910 Filtration of vegetable based matter
05/13/1980US4202768 Backwash water recycling system
05/06/1980US4201670 Method of and device for filtering liquids
05/06/1980US4201668 Treatment of sludge comprising biological aggregate
04/1980
04/15/1980US4198298 System and apparatus for control and optimization of filtration process
04/08/1980CA1075165A1 Adaptable filtering enclosure
04/03/1980WO1980000542A1 Process of filtration
03/1980
03/11/1980US4192746 Liquid clarification system
03/11/1980US4192743 Process of dewatering sludge-type material and installation for carrying out the process
03/05/1980EP0008425A2 Method for the determination of the dewatering aptitude of sludge samples
03/04/1980US4191655 Dewatering composition
02/1980
02/26/1980US4190532 Removal of impurities from liquids
02/12/1980CA1071541A1 Pool filtering system
02/06/1980EP0007343A1 Method and apparatus for regenerating filters
01/1980
01/29/1980US4186089 Rotary filters
01/08/1980CA1069378A1 Consecutive, independent dewatering apparatus and method for improved sludge treatment
12/1979
12/18/1979US4179381 Intake distributor for a settling tank filter
12/18/1979US4179264 Combustion of hydrocarbon gases
12/11/1979US4177653 Slush filtration method
12/04/1979US4177142 Mixture of oppositely charged filter aid material
12/04/1979US4177141 Pre-impregnation
11/1979
11/20/1979US4175158 Conversion of a boron compound to boron oxide by heating
11/13/1979US4174282 Precoated filters for ultrapure water for steam gneration of electicity
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