ES525855A0 - Procedimiento y aparato de tratamiento anaerobio de aguas residuales en un filtro con relleno de material granular - Google Patents
Procedimiento y aparato de tratamiento anaerobio de aguas residuales en un filtro con relleno de material granularInfo
- Publication number
- ES525855A0 ES525855A0 ES525855A ES525855A ES525855A0 ES 525855 A0 ES525855 A0 ES 525855A0 ES 525855 A ES525855 A ES 525855A ES 525855 A ES525855 A ES 525855A ES 525855 A0 ES525855 A0 ES 525855A0
- Authority
- ES
- Spain
- Prior art keywords
- wastewater treatment
- granular material
- treatment procedure
- filter filled
- anaerobic wastewater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
- C12M27/20—Baffles; Ribs; Ribbons; Auger vanes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
- C12M29/08—Air lift
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/24—Recirculation of gas
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Genetics & Genomics (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Sustainable Development (AREA)
- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Biodiversity & Conservation Biology (AREA)
- Molecular Biology (AREA)
- Clinical Laboratory Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8216273A FR2533548B1 (fr) | 1982-09-28 | 1982-09-28 | Procede et appareil de traitement anaerobie d'eaux residuaires dans un filtre a remplissage de materiau granulaire |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8404664A1 ES8404664A1 (es) | 1984-06-01 |
ES525855A0 true ES525855A0 (es) | 1984-06-01 |
Family
ID=9277792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES525855A Granted ES525855A0 (es) | 1982-09-28 | 1983-09-22 | Procedimiento y aparato de tratamiento anaerobio de aguas residuales en un filtro con relleno de material granular |
Country Status (5)
Country | Link |
---|---|
US (1) | US4482458A (es) |
EP (1) | EP0105788A1 (es) |
DE (1) | DE105788T1 (es) |
ES (1) | ES525855A0 (es) |
FR (1) | FR2533548B1 (es) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4780415A (en) * | 1981-07-29 | 1988-10-25 | Gilbert Ducellier | Method of degrading organic products, by-products and scraps in an anaerobic medium |
JPH0634993B2 (ja) * | 1984-09-17 | 1994-05-11 | 学校法人早稲田大学 | 三相流動層水質浄化方法 |
US4780198A (en) * | 1985-03-26 | 1988-10-25 | Gore & Storrie Ltd. | Hybrid high rate anaerobic treatment apparatus |
US4676906A (en) * | 1985-03-26 | 1987-06-30 | Gore & Storrie Limited | Hybrid high rate anaerobic treatment process |
IT1184932B (it) * | 1985-03-27 | 1987-10-28 | Luigi Verde | Procedimento perfezionato per la depurazione delle acque mediante chiariflocculazione |
GB8515636D0 (en) * | 1985-06-20 | 1985-07-24 | Celltech Ltd | Fermenter |
DE3665056D1 (en) * | 1985-08-09 | 1989-09-21 | Degremont | Fluidized-bed reactor for the biological treatment of water |
NL8502330A (nl) * | 1985-08-23 | 1987-03-16 | Mutlireaktor Bv | Werkwijze en installatie voor de anaerobe zuivering van afvalwater. |
US4626354A (en) * | 1985-09-30 | 1986-12-02 | Zimpro Inc. | Method for anaerobic treatment of high strength liquors |
JPS62227498A (ja) * | 1986-03-31 | 1987-10-06 | Kurita Water Ind Ltd | 流動床式嫌気性処理装置 |
FR2619804B1 (fr) * | 1987-08-27 | 1991-06-28 | Sogea | Procede continu de reduction de la pollution dissoute dans un liquide par voie biologique |
NZ226453A (en) * | 1987-10-08 | 1990-04-26 | Gist Brocades Nv | Anaerobic purification of waste water using granular sludge in fluidised bed process |
US5230794A (en) * | 1987-10-08 | 1993-07-27 | Biothane Corporation | Fluidized-bed apparatus |
FR2626868B1 (fr) * | 1988-02-08 | 1990-06-08 | Sogea | Procede et dispositif de reduction de la pollution dissoute dans un liquide |
NL8801221A (nl) * | 1988-05-09 | 1989-12-01 | Meyn Maschf | Inrichting en werkwijze voor het anaeroob zuiveren van afvalwater. |
DE3829497A1 (de) * | 1988-08-31 | 1990-03-08 | Kernforschungsanlage Juelich | Verfahren und vorrichtung zur biotechnologischen behandlung von fluessigkeiten in einem vertikalen schuettkoerperbett |
CA2062682C (en) * | 1991-03-13 | 1997-11-25 | Sidney E. Clark | Method and apparatus for anaerobic sludge digestion |
FR2685691A1 (fr) * | 1991-12-26 | 1993-07-02 | Dumez Sa Lyonnaise Eaux | Procede d'epuration biologique de liquides charges d'impuretes. |
US5298164A (en) * | 1992-07-28 | 1994-03-29 | United States Filter Corporation | Emission reduction of organic volatiles from aerobic biological reactors |
US5330652A (en) * | 1993-02-26 | 1994-07-19 | Aquafuture, Inc. | Fluidized bed reactor and distribution system |
US5486291A (en) * | 1993-11-10 | 1996-01-23 | Ocean Arks International, Inc. | Ecological fluidized bed method for the treatment of polluted water |
US5494574A (en) * | 1994-08-09 | 1996-02-27 | Envirogen, Inc. | Mechanically mixed packed bed bioreactor |
US5527455A (en) * | 1995-01-23 | 1996-06-18 | Hoffa; Gary | Fluidized bed biological filter system for fish tanks |
NL9500171A (nl) * | 1995-01-31 | 1996-09-02 | Pacques Bv | Werkwijze voor aerobe zuivering van afvalwater. |
US5651890A (en) * | 1995-04-04 | 1997-07-29 | Trost; Paul B. | Use of propane as stripper gas in anaerobic digestion of wastewaters |
DE19644457A1 (de) * | 1995-10-27 | 1997-04-30 | Sam Kwang Aqua Clear Inc | Granulärer Träger zur Behandlung von Schmutzwasser oder Abwasser, Verfahren zu dessen Herstellung und Vorrichtung zur Behandlung von Schmutzwasser oder Abwasser unter Verwendung des granulären Trägers |
US5705057A (en) * | 1996-03-25 | 1998-01-06 | Hoffa; Gary | Fluidized bed biological filter assembly for fish tanks |
US5733454A (en) * | 1996-04-26 | 1998-03-31 | Ehh Holding Co., Inc. | Process and apparatus for the treatment of flowable waste |
KR100243834B1 (ko) | 1996-12-02 | 2000-02-01 | 김승욱 | 폐수처리장치 |
NL1005013C2 (nl) * | 1997-01-16 | 1998-07-20 | Astraco Beheer Bv | Regelen van een filterinrichting voor het zuiveren van vervuilde en in het bijzonder nitraten bevattende vloeistof. |
US5811259A (en) * | 1997-07-29 | 1998-09-22 | Ecomat, Inc. | Biochemical reactor |
US5942116A (en) * | 1997-08-01 | 1999-08-24 | Clark; Sidney E. | Anaerobic sludge digester |
US6159365A (en) * | 1998-01-09 | 2000-12-12 | American Envirocare, Inc. | Method and apparatus for treating contaminated water |
DE19815616A1 (de) * | 1998-04-07 | 1999-10-14 | Zeppelin Silo & Apptech Gmbh | Verfahren und Vorrichtung zum Reinigen von Abwasser |
US6105593A (en) * | 1998-05-22 | 2000-08-22 | Jet, Inc. | Fixed film media cleaner apparatus and method |
US6106719A (en) * | 1998-09-14 | 2000-08-22 | Director-General Of Agency Of Industrial Science And Technology | Process for treating liquid waste using light under anaerobic conditions |
US6436288B1 (en) | 1999-02-08 | 2002-08-20 | Mississippi State University | Bast medium biological reactor treatment system for remediation and odor suppression of organic waste streams |
US6048459A (en) * | 1999-04-09 | 2000-04-11 | Mockba Corporation | Method and apparatus for fluidization of particulate bed materials |
US6361694B1 (en) | 2000-06-26 | 2002-03-26 | Paul B. Trost | Enhanced biomass digestion through intermittent injection of propane |
CA2361116A1 (en) * | 2000-11-07 | 2002-05-07 | International Waste Management Systems Plc. | Biological fluidised bed apparatus |
US6942798B2 (en) * | 2001-01-19 | 2005-09-13 | Miller, Iii Herman P. | Vacuum retort anaerobic digestion system and process |
FR2821345B1 (fr) * | 2001-02-27 | 2003-11-14 | Degremont | Procede d'epuration biologique des eaux residuaires en cultures mixtes |
US6544421B2 (en) * | 2001-03-31 | 2003-04-08 | Council Of Scientific And Industrial Research | Method for purification of waste water and “RFLR” device for performing the same |
US6527948B2 (en) * | 2001-03-31 | 2003-03-04 | Council Of Scientific And Industrial Research | Apparatus for purification of waste water and a “RFLR” device for performing the same |
US20030085174A1 (en) * | 2001-04-19 | 2003-05-08 | Zappi Mark E | On-site biological treatment of contaminated fluids |
BE1014261A3 (nl) * | 2001-06-20 | 2003-07-01 | Organic Waste Systems Naamloze | Werkwijze en inrichting voor het anaeroob vergisten van organisch materiaal. |
BR0214176A (pt) * | 2001-11-14 | 2004-08-31 | Dharma Living Systems Inc | Sistema e método para tratamento avançado de águas de rejeito, e, método para comercialização |
EP1451112A4 (en) * | 2001-11-14 | 2006-06-21 | Dharma Living Systems Inc | INTEGRATED HYDROPONIC AND SOLID FILM WASTEWATER TREATMENT SYSTEMS AND RELATED METHODS |
WO2003045853A1 (fr) * | 2001-11-28 | 2003-06-05 | Ebara Corporation | Procede et dispositif de filtration a biomembrane |
US20030209476A1 (en) * | 2002-04-18 | 2003-11-13 | Josse Juan Carlos | Biological fluidized bed apparatus |
US6531058B1 (en) * | 2002-05-13 | 2003-03-11 | Juan Carlos Josse | Biological fluidized bed apparatus |
US6863816B2 (en) * | 2002-06-17 | 2005-03-08 | Dharma Living Systems, Inc. | Tidal vertical flow wastewater treatment system and method |
US6881338B2 (en) | 2002-06-17 | 2005-04-19 | Dharma Living Systems, Inc. | Integrated tidal wastewater treatment system and method |
MD2334G2 (ro) * | 2002-08-30 | 2004-06-30 | Государственный Университет Молд0 | Procedeu de epurare anaerobă a apelor reziduale şi dispozitiv pentru realizarea acestuia |
US7029586B2 (en) * | 2003-02-28 | 2006-04-18 | Dharma Living Systems, Inc. | Integrated tidal wastewater treatment system and method |
WO2005026054A2 (en) * | 2003-09-05 | 2005-03-24 | Dharma Living Systems, Inc. | Drain and flood wastewater treatment system and associated methods |
US7347940B2 (en) * | 2004-06-17 | 2008-03-25 | Worrell Water Technologies, Llc | Nitrogen removal system and method for wastewater treatment lagoons |
US7309434B2 (en) * | 2004-06-28 | 2007-12-18 | Potts David A | Apparatus and method for wastewater treatment |
MD2795G2 (ro) * | 2004-09-15 | 2006-02-28 | Государственный Университет Молд0 | Procedeu de epurare biochimică anaerobă-aerobă a apelor reziduale |
US7147781B2 (en) * | 2005-04-08 | 2006-12-12 | Mijodrag Gordic | Backwash system and method for waste water treatment system |
CN100347284C (zh) * | 2005-05-20 | 2007-11-07 | 清华大学 | 一种无需外源气的气升式环流反应器 |
US20070051675A1 (en) * | 2005-06-14 | 2007-03-08 | Paul Lindh | Filter device and method for filtering |
US7850849B2 (en) | 2005-11-18 | 2010-12-14 | Universidade Do Minho | Anaerobic reactor for the removal of long chain fatty acids from fat containing wastewater |
US7785467B2 (en) * | 2007-05-15 | 2010-08-31 | Eagle Green Energy, LLC | Method, composition and apparatus for high temperature production of methane from poultry waste |
CN101790381B (zh) * | 2007-08-28 | 2014-08-27 | 巴克斯特国际公司 | 生产病毒疫苗的方法 |
US9593300B2 (en) | 2009-03-12 | 2017-03-14 | Prasad S Kodukula | Device for fuel and chemical production from biomass-sequestered carbon dioxide and method therefor |
US8066879B2 (en) * | 2009-06-17 | 2011-11-29 | Absolute Aeration | Method for treating waste water |
US8152998B2 (en) * | 2010-05-28 | 2012-04-10 | Ashbrook Simon-Hartley, LP | Screenless granular media filters and methods of use |
EP3316983B1 (en) * | 2015-07-03 | 2021-09-22 | Paques I.P. B.V. | Apparatus and method for purification of a fluid by means of a filter bed |
EP3231859A1 (de) * | 2016-04-11 | 2017-10-18 | MIAL GmbH | Für die kultivierung photosynthetisch aktiver zellen geeignetes reaktionssystem und dessen verwendung |
US10982233B2 (en) | 2016-11-07 | 2021-04-20 | Eagle Green Energy Ii Llc | Method of processing organic matter |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2889929A (en) * | 1954-09-03 | 1959-06-09 | Dorr Oliver Inc | Combined anaerobic treatment and clarification unit |
US3853752A (en) * | 1970-12-02 | 1974-12-10 | J Tymoszczuk | Process and apparatus for treating wastes by a combined activated sludge and biological filter bed |
US3968034A (en) * | 1970-12-02 | 1976-07-06 | Jerzy Tymoszczuk | Process and apparatus for treating wastes by a combined activated sludge and biological filter bed |
US3788476A (en) * | 1971-09-23 | 1974-01-29 | D Othmer | Sewage treatment system |
US3846289A (en) * | 1972-06-19 | 1974-11-05 | Ecolotrol | Waste treatment process |
US4009099A (en) * | 1974-07-12 | 1977-02-22 | Ecolotrol, Inc. | Apparatus and process for removing ammonia nitrogen from waste water |
JPS51142860A (en) * | 1975-04-30 | 1976-12-08 | Dowa Mining Co Ltd | Method for oxidation treatment of fe2+ in waste liquor |
US4111808A (en) * | 1975-12-11 | 1978-09-05 | Fair John H | Apparatus for sludge digestion |
BE885575Q (fr) * | 1977-01-07 | 1981-02-02 | Shattock Geoffrey F | Traitement des boues par degradation biologique |
JPS54108464A (en) * | 1978-02-14 | 1979-08-25 | Chiyoda Chem Eng & Constr Co Ltd | Method of biologically treating drainage by downward flow |
FR2446259A1 (fr) * | 1979-01-12 | 1980-08-08 | Degremont | Procede et appareil pour l'elimination de la pollution azotee des eaux |
CA1123579A (en) * | 1979-08-02 | 1982-05-18 | Xuan T. Nguyen | Turbulent transport contactor |
US4322296A (en) * | 1980-08-12 | 1982-03-30 | Kansas State Univ. Research Foundation | Method for wastewater treatment in fluidized bed biological reactors |
-
1982
- 1982-09-28 FR FR8216273A patent/FR2533548B1/fr not_active Expired
-
1983
- 1983-09-22 US US06/534,621 patent/US4482458A/en not_active Expired - Lifetime
- 1983-09-22 ES ES525855A patent/ES525855A0/es active Granted
- 1983-09-23 DE DE198383401859T patent/DE105788T1/de active Pending
- 1983-09-23 EP EP83401859A patent/EP0105788A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0105788A1 (fr) | 1984-04-18 |
ES8404664A1 (es) | 1984-06-01 |
DE105788T1 (de) | 1984-08-16 |
FR2533548A1 (fr) | 1984-03-30 |
US4482458A (en) | 1984-11-13 |
FR2533548B1 (fr) | 1985-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20000201 |