BR9708907A - Processo e aparelho para a produção de água potável - Google Patents
Processo e aparelho para a produção de água potávelInfo
- Publication number
- BR9708907A BR9708907A BR9708907A BR9708907A BR9708907A BR 9708907 A BR9708907 A BR 9708907A BR 9708907 A BR9708907 A BR 9708907A BR 9708907 A BR9708907 A BR 9708907A BR 9708907 A BR9708907 A BR 9708907A
- Authority
- BR
- Brazil
- Prior art keywords
- drinking water
- production
- filtration
- recirculation
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
- C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
- C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
- C02F2209/006—Processes using a programmable logic controller [PLC] comprising a software program or a logic diagram
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/211—Solar-powered water purification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
''PROCESSO E APARELHO PARA A PRODUçãO DE áGUA POTáVEL''. Esta invenção compreende um processo e uma aparelhagem para a produção de água potável purificada a partir de fontes de água fresca superficial ou freática não empregando pré-tratamento químico ou coagulantes, por meio de utilização de um meio de filtração positivamente carregado para atrair os sólidos suspensos tipicamente negativamente carregados, presentes na fonte de água. O processo, que pode ser portátil, inclui um sistema de filtração possuindo um componente de retro-lavagem/recirculação/filtração e uma etapa de desinfecção. Este processo inclui adicionalmente um controlador de sistema que recebe sinais elétricos dos controles de bóia para controlar as etapas de filtração, recirculação e de retro-lavagem. Este processo produz água potável que atende ou excede as diretrizes exigidas pela Organização Mundial de Saúde para turbidez e conteúdo microbiológico.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/642,535 US5873996A (en) | 1996-05-03 | 1996-05-03 | Community drinking water purification system |
PCT/US1997/007106 WO1997041960A1 (en) | 1996-05-03 | 1997-04-29 | Drinking water filtration system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9708907A true BR9708907A (pt) | 2000-05-09 |
Family
ID=24576990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9708907A BR9708907A (pt) | 1996-05-03 | 1997-04-29 | Processo e aparelho para a produção de água potável |
Country Status (5)
Country | Link |
---|---|
US (2) | US5873996A (pt) |
EP (1) | EP0904155A1 (pt) |
AU (1) | AU2746497A (pt) |
BR (1) | BR9708907A (pt) |
WO (1) | WO1997041960A1 (pt) |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19717009A1 (de) * | 1997-04-23 | 1998-10-29 | Digmesa Ag | Verfahren zum Befüllen eines Trinkwassertanks und Vorrichtung zur Trinkwasserversorgung |
US6224778B1 (en) * | 1998-03-18 | 2001-05-01 | Charles T. Peltzer | Method for manufacturing a system for mixing fluids |
GB2350358B (en) * | 1998-10-29 | 2003-07-23 | Imi Cornelius | Water treatment |
US8958917B2 (en) | 1998-12-17 | 2015-02-17 | Hach Company | Method and system for remote monitoring of fluid quality and treatment |
US7454295B2 (en) | 1998-12-17 | 2008-11-18 | The Watereye Corporation | Anti-terrorism water quality monitoring system |
US9056783B2 (en) | 1998-12-17 | 2015-06-16 | Hach Company | System for monitoring discharges into a waste water collection system |
GB9921659D0 (en) * | 1999-09-14 | 1999-11-17 | Imi Cornelius Uk Ltd | Water treatment |
AU758846B2 (en) * | 1999-12-21 | 2003-04-03 | John Anthony Walkom | Mobile water treatment system |
US6436283B1 (en) | 2000-03-07 | 2002-08-20 | Eddie D. Duke | Portable rainwater collecting and purifying system |
US6379539B1 (en) | 2000-03-09 | 2002-04-30 | Eric Ubelhor | Point of entry water treatment system |
US6342155B1 (en) * | 2000-07-17 | 2002-01-29 | Kintech Technology Co., Ltd. | Apparatus for making fluoridated and drinking water |
US20020079267A1 (en) * | 2000-08-01 | 2002-06-27 | Savage E. Stuart | Process for direct filtration of wastewater |
US6495052B1 (en) | 2000-10-24 | 2002-12-17 | Ontario Limited | System and method for treatment of water |
KR100504584B1 (ko) * | 2000-12-14 | 2005-08-03 | 주식회사 포스코 | 코크스폐수의 부유물질 자동 제거 장치 |
US7150153B2 (en) * | 2001-11-13 | 2006-12-19 | David Browe | Renewable portable stored energy power generating apparatus with alternate water source capability |
CA2387777C (en) | 2002-05-28 | 2008-04-01 | Ms Filter Inc. | Potable water treatment plant and method of maintaining same |
US20040130851A1 (en) * | 2002-10-25 | 2004-07-08 | Faris Sadeg M. | Fluid deionization system |
WO2004056447A1 (fr) * | 2002-12-20 | 2004-07-08 | Casteels, Francis, P. | Procede et dispositif de filtration de liquides conducteurs de l electricite contenant des particules en suspension et/ou colloïdales chargees electriquement |
US8920619B2 (en) | 2003-03-19 | 2014-12-30 | Hach Company | Carbon nanotube sensor |
WO2005035128A2 (en) * | 2003-10-08 | 2005-04-21 | Clemson University | Carbonaceous waste treatment system and method |
CN100503312C (zh) * | 2003-12-08 | 2009-06-24 | 艾巴斯股份有限公司 | 涉及基础设施服务的设备和方法 |
US7122116B2 (en) * | 2004-02-24 | 2006-10-17 | R-Kind Water Systems, Inc. | Water treatment system |
WO2006020254A2 (en) * | 2004-07-16 | 2006-02-23 | Skagit Farmers Supply | Water purification system and method |
US7241384B1 (en) | 2004-10-01 | 2007-07-10 | Angel Torres-Collazo | Floating strainer |
US7497957B2 (en) * | 2005-01-21 | 2009-03-03 | Bernard Frank | System, method and apparatus for end-to-end control of water quality |
CA2505565C (en) * | 2005-04-28 | 2008-09-16 | Camco Inc. | Apparatus and method for controlling a clothes dryer |
US20060251551A1 (en) * | 2005-05-09 | 2006-11-09 | Brian Johnson | Apparatus and method for ozone gas distribution |
US20070007213A1 (en) * | 2005-07-08 | 2007-01-11 | Macpherson John W Jr | Water filtration process and apparatus |
WO2007011352A1 (en) * | 2005-07-18 | 2007-01-25 | Bernard Frank | Method for end-to-end control of water quality |
US20070193932A1 (en) * | 2005-07-18 | 2007-08-23 | William Nightingale | Water purification system and method |
US7799236B2 (en) * | 2005-08-30 | 2010-09-21 | Lg Chem, Ltd. | Gathering method and apparatus of powder separated soluble component |
EP1760046B1 (de) * | 2005-09-06 | 2011-08-03 | Oase GmbH | Kompaktes Wasserreinigungsgerät für Teiche |
US7811460B2 (en) * | 2006-03-07 | 2010-10-12 | U.S. Environmental Protection Agency | Process and apparatus for removal of biocolloids from water |
CA2542673A1 (en) * | 2006-04-10 | 2007-10-10 | Peter Klaptchuk | Method and apparatus for pathogenic and chemical reduction in fluid waste |
US20090078319A1 (en) * | 2006-05-05 | 2009-03-26 | Chaim Schwimmer | Method for providing fresh spring water to occupants of a facility directly from a sealable collapsible, insulated, and sanitary container centrally located in the facility |
US20080266758A1 (en) * | 2007-04-25 | 2008-10-30 | Hurt Steven B | Mobile utilities station |
US8192619B2 (en) * | 2007-08-07 | 2012-06-05 | Whirlpool Corporation | Portable filtration and ozonation apparatus |
US8133400B2 (en) * | 2007-08-07 | 2012-03-13 | Whirlpool Corporation | Portable ozonation apparatus for storing and purifying liquid |
GB2451875B (en) * | 2007-08-15 | 2012-05-16 | Mono Pumps Ltd | Filtration system |
US7775374B1 (en) * | 2007-11-15 | 2010-08-17 | Barker Jack E | Self powered water purification system |
US20100224558A1 (en) * | 2009-03-09 | 2010-09-09 | Jack Barker | Water Filtration System |
US20100300544A1 (en) * | 2009-06-02 | 2010-12-02 | Waterdogs Water Recovery, LLC | Rainwater recovery and treatment system |
GB2479729B (en) * | 2010-04-19 | 2013-03-06 | Leighton Harris James | A water flocculation, filtration, purification and storage unit capable of serving a community of 2000 people or for use in disaster and relief situations |
US20140014584A1 (en) * | 2010-04-22 | 2014-01-16 | Steven Wayne Cone | Wastewater purification system and method |
BR112012027588A2 (pt) | 2010-04-27 | 2016-08-09 | Bcr Environmental Corp | aparelho de tratamento de águas residuais para alcançar biossólidos de classe b usando o dióxido de cloro |
US8778175B2 (en) | 2010-06-14 | 2014-07-15 | E. Neal Caldwell | Water filter system |
ES2371807B1 (es) * | 2010-06-18 | 2012-11-21 | Optima Renovables, S.L | Aparato potabilizador de agua por osmosis inversa. |
US8980105B2 (en) | 2011-05-20 | 2015-03-17 | Michael J. Fleck | Personal advanced oxidation water treatment system |
US9096444B2 (en) * | 2012-05-17 | 2015-08-04 | Hamilton Sundstrand Space Systems International, Inc. | Low pressure drop remediation bed for water based coolant loops |
WO2014049430A2 (en) * | 2012-09-28 | 2014-04-03 | Elo Nielsen | Mobile water filtration unit and control system, and related devices, components, systems and methods |
US9751782B2 (en) * | 2013-03-14 | 2017-09-05 | Dubois Chemicals, Inc. | Wastewater treatment system and method |
WO2014197563A1 (en) * | 2013-06-04 | 2014-12-11 | Flow Control Llc. | Solar powered portable submersible water pump |
JP5512032B1 (ja) * | 2013-12-05 | 2014-06-04 | 三菱重工業株式会社 | 循環水利用システムの課金装置、循環水利用システム |
JP5518245B1 (ja) | 2013-12-05 | 2014-06-11 | 三菱重工業株式会社 | 循環水利用システム群の遠隔監視方法及び遠隔監視システム |
CN104264739B (zh) * | 2014-10-21 | 2015-12-02 | 重庆中设工程设计股份有限公司 | 旁河地下取水地表水回灌反冲洗工程结构 |
ES2592980B1 (es) * | 2016-09-23 | 2017-09-08 | Bmi Portfolio, S.L.U. | Unidad autónoma potabilizadora |
US20200148551A1 (en) * | 2017-05-07 | 2020-05-14 | Aqua Research Llc | Water Treatment Tank Method And Apparatus |
CN113800670A (zh) * | 2020-06-17 | 2021-12-17 | 埃欧孚(上海)检测技术有限公司 | 一种用于纺织废水检测、处理一体化的检测系统 |
WO2022101332A1 (en) * | 2020-11-12 | 2022-05-19 | Rainwell Ab | Slow sand water filter suitable for off-grid use |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2049920A1 (de) * | 1970-10-10 | 1972-04-13 | Adsorptionstech Lab | Verfahren zur Gewinnung von Trinkwasser |
US3701423A (en) * | 1970-05-12 | 1972-10-31 | Ecodyne Corp | Method and apparatus for filtering a liquid |
US3651942A (en) * | 1970-06-22 | 1972-03-28 | Martin J Berardi | Reactor filter assembly |
US3886071A (en) * | 1973-01-29 | 1975-05-27 | Ecodyne Corp | Filter |
US3870033A (en) * | 1973-11-30 | 1975-03-11 | Aqua Media | Ultra pure water process and apparatus |
US4196081A (en) * | 1978-04-13 | 1980-04-01 | Pavia Edgar H | Apparatus for emergency water purification |
US4211654A (en) * | 1978-08-04 | 1980-07-08 | Weber Leslie A | Apparatus for aerobic treatment of contaminated liquid |
US4181607A (en) * | 1978-09-15 | 1980-01-01 | The United States Of America As Represented By The Secretary Of The Interior | Removal of asbestos fibers from water |
US4385998A (en) * | 1981-08-14 | 1983-05-31 | The United States Of America As Represented By The Secretary Of The Interior | Removal of suspended solids from water |
US4647374A (en) * | 1985-06-11 | 1987-03-03 | Ziaylek Michael P | Floating intake head for water hoses |
JPS6223407A (ja) * | 1985-06-17 | 1987-01-31 | Fujimasa Kiko Kk | 流体中の微小不純物除去方法 |
US4752397A (en) * | 1986-06-30 | 1988-06-21 | Aluminum Company Of America | Process for removing heavy metal ions from solutions using adsorbents containing activated hydrotalcite |
US5114576A (en) * | 1990-02-15 | 1992-05-19 | Trineos | Prevention of contaminants buildup in captured and recirculated water systems |
US5133871A (en) * | 1990-06-12 | 1992-07-28 | Ehud Levy | Water filter |
US5211852A (en) * | 1990-12-28 | 1993-05-18 | Martin Marietta Magnesia Specialties Inc. | Process for removal of metal ions from water |
US5328758A (en) * | 1991-10-11 | 1994-07-12 | Minnesota Mining And Manufacturing Company | Particle-loaded nonwoven fibrous article for separations and purifications |
CA2111063C (en) * | 1993-02-18 | 1996-04-23 | Gary M. Bach | Reinforced cell material |
WO1995005231A1 (en) * | 1993-08-12 | 1995-02-23 | Contamco Corporation | Improved electrostatic filter |
-
1996
- 1996-05-03 US US08/642,535 patent/US5873996A/en not_active Expired - Fee Related
-
1997
- 1997-04-29 AU AU27464/97A patent/AU2746497A/en not_active Abandoned
- 1997-04-29 BR BR9708907A patent/BR9708907A/pt not_active Application Discontinuation
- 1997-04-29 EP EP97921425A patent/EP0904155A1/en not_active Ceased
- 1997-04-29 WO PCT/US1997/007106 patent/WO1997041960A1/en not_active Application Discontinuation
- 1997-10-22 US US08/955,888 patent/US5997750A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0904155A1 (en) | 1999-03-31 |
AU2746497A (en) | 1997-11-26 |
WO1997041960A1 (en) | 1997-11-13 |
US5997750A (en) | 1999-12-07 |
US5873996A (en) | 1999-02-23 |
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