ATE490018T1 - Verfahren zum reinigen und reinhalten einer membranfläche bei filtration - Google Patents
Verfahren zum reinigen und reinhalten einer membranfläche bei filtrationInfo
- Publication number
- ATE490018T1 ATE490018T1 AT03813834T AT03813834T ATE490018T1 AT E490018 T1 ATE490018 T1 AT E490018T1 AT 03813834 T AT03813834 T AT 03813834T AT 03813834 T AT03813834 T AT 03813834T AT E490018 T1 ATE490018 T1 AT E490018T1
- Authority
- AT
- Austria
- Prior art keywords
- pulses
- membrane
- membrane surface
- cleaning
- seconds
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 6
- 238000004140 cleaning Methods 0.000 title abstract 3
- 238000001914 filtration Methods 0.000 title abstract 3
- 238000011001 backwashing Methods 0.000 abstract 2
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
- B01D2321/2066—Pulsated flow
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- External Artificial Organs (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43557302P | 2002-12-19 | 2002-12-19 | |
| PCT/US2003/040950 WO2004056458A2 (en) | 2002-12-19 | 2003-12-18 | Methods for cleaning and maintaining membrane surface during filtration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE490018T1 true ATE490018T1 (de) | 2010-12-15 |
Family
ID=32682263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT03813834T ATE490018T1 (de) | 2002-12-19 | 2003-12-18 | Verfahren zum reinigen und reinhalten einer membranfläche bei filtration |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7531042B2 (de) |
| EP (1) | EP1585590B1 (de) |
| CN (1) | CN1761516A (de) |
| AT (1) | ATE490018T1 (de) |
| AU (1) | AU2003297476A1 (de) |
| DE (1) | DE60335214D1 (de) |
| ES (1) | ES2358668T3 (de) |
| WO (1) | WO2004056458A2 (de) |
Families Citing this family (67)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR421501A0 (en) | 2001-04-04 | 2001-05-03 | U.S. Filter Wastewater Group, Inc. | Potting method |
| AUPR692401A0 (en) | 2001-08-09 | 2001-08-30 | U.S. Filter Wastewater Group, Inc. | Method of cleaning membrane modules |
| AUPS300602A0 (en) | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| WO2005021140A1 (en) | 2003-08-29 | 2005-03-10 | U.S. Filter Wastewater Group, Inc. | Backwash |
| NZ546959A (en) | 2003-11-14 | 2008-03-28 | Siemens Water Tech Corp | Improved cleaning method for a porous membrane filtration module |
| WO2005092799A1 (en) | 2004-03-26 | 2005-10-06 | U.S. Filter Wastewater Group, Inc. | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
| DE102004048416B4 (de) * | 2004-04-02 | 2007-08-30 | Koch Membrane Systems Gmbh | Verfahren zum Begasen von Membranmodulen |
| CA2579168C (en) | 2004-09-07 | 2015-06-23 | Siemens Water Technologies Corp. | Membrane filtration with reduced volume cleaning step |
| AU2005284677B2 (en) | 2004-09-14 | 2010-12-23 | Evoqua Water Technologies Llc | Methods and apparatus for removing solids from a membrane module |
| US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
| CA2591408C (en) | 2004-12-24 | 2015-07-21 | Siemens Water Technologies Corp. | Cleaning in membrane filtration systems |
| NZ555987A (en) | 2004-12-24 | 2009-08-28 | Siemens Water Tech Corp | Simple gas scouring method and apparatus |
| CN1317056C (zh) * | 2005-03-28 | 2007-05-23 | 天津大学 | 中空纤维膜滤装置的冲洗方法 |
| JP2008539054A (ja) | 2005-04-29 | 2008-11-13 | シーメンス・ウォーター・テクノロジーズ・コーポレイション | 膜フィルターのための化学洗浄 |
| CN101287538B (zh) | 2005-08-22 | 2013-03-06 | 西门子工业公司 | 使用歧管以减少回洗的水过滤装置 |
| WO2007065229A1 (en) * | 2005-12-09 | 2007-06-14 | Siemens Water Technologies Corp. | Reduced backwash volume process |
| JP2009523062A (ja) * | 2006-01-12 | 2009-06-18 | シーメンス・ウォーター・テクノロジーズ・コーポレーション | ろ過プロセスにおける改良型運転方法 |
| DE102006030833A1 (de) * | 2006-07-04 | 2008-01-10 | Pari GmbH Spezialisten für effektive Inhalation | Verfahren und Vorrichtung für die Reinigung der Verneblermembran in einem Inhalationstherapiegerät |
| NZ574640A (en) * | 2006-08-31 | 2011-12-22 | Siemens Water Tech Corp | Method of backwashing membrane filtration system with gas from source used to scour or aerate membrane |
| SG141244A1 (en) * | 2006-09-08 | 2008-04-28 | Ultra Flo Pte Ltd | Filter renewal system and a method thereof |
| DE102006044624B4 (de) * | 2006-09-19 | 2008-07-10 | Koch Membrane Systems Gmbh | Vorrichtung zur Begasung einer Flüssigkeit |
| WO2008051546A2 (en) | 2006-10-24 | 2008-05-02 | Siemens Water Technologies Corp. | Infiltration/inflow control for membrane bioreactor |
| WO2008123972A1 (en) | 2007-04-02 | 2008-10-16 | Siemens Water Technologies Corp. | Improved infiltration/inflow control for membrane bioreactor |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| CA2688455C (en) | 2007-05-29 | 2019-12-03 | Evoqua Water Technologies Llc | Pulsed random two phase gas/liquid flow for cleaning membrane surfaces |
| KR101320719B1 (ko) * | 2007-08-16 | 2013-10-29 | 코오롱인더스트리 주식회사 | 중공사막 모듈의 세정 장치 및 그 방법 |
| US20090107526A1 (en) * | 2007-10-31 | 2009-04-30 | Zhuge Jun | Co2 system for polymer film cleaning |
| US8574431B2 (en) * | 2008-03-18 | 2013-11-05 | Municipal Filtration Company, Llc | Filter system with gas agitation |
| CN101284213B (zh) * | 2008-05-30 | 2011-08-03 | 北京汉青天朗水处理科技有限公司 | 一种清洗膜分离设备的方法及装置 |
| KR101614520B1 (ko) | 2008-07-24 | 2016-04-21 | 에보쿠아 워터 테크놀로지스 엘엘씨 | 막 여과 모듈용 프레임 시스템 |
| US8652331B2 (en) | 2008-08-20 | 2014-02-18 | Siemens Water Technologies Llc | Membrane system backwash energy efficiency |
| AU2010101488B4 (en) | 2009-06-11 | 2013-05-02 | Evoqua Water Technologies Llc | Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane |
| US20110042311A1 (en) * | 2009-08-18 | 2011-02-24 | Aquan Clarus Holdings Pty Ltd. | Membrane system |
| US9358505B2 (en) | 2009-09-03 | 2016-06-07 | General Electric Company | Gas sparger for an immersed membrane |
| ES2738898T3 (es) | 2010-04-30 | 2020-01-27 | Evoqua Water Tech Llc | Dispositivo de distribución de flujo de fluido |
| FR2962921B1 (fr) * | 2010-07-23 | 2013-12-27 | Degremont | Procede de lavage d'un module de filtration d'eau comportant des membranes, et module de filtration pour la mise en oeuvre du procede |
| US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
| US9364805B2 (en) | 2010-10-15 | 2016-06-14 | General Electric Company | Integrated gas sparger for an immersed membrane |
| US8876089B2 (en) | 2011-09-15 | 2014-11-04 | Zenon Technology Partnership | Method and apparatus to keep an aerator full of air |
| SG11201401089PA (en) | 2011-09-30 | 2014-04-28 | Evoqua Water Technologies Llc | Improved manifold arrangement |
| AU2013200808B2 (en) | 2011-09-30 | 2014-11-06 | Evoqua Water Technologies Llc | Isolation valve |
| KR20130035415A (ko) | 2011-09-30 | 2013-04-09 | 코오롱인더스트리 주식회사 | 산기부 및 그것을 포함한 여과장치 |
| DE102011056633B4 (de) * | 2011-12-19 | 2014-02-13 | Highq-Factory Gmbh | Verfahren zum Reinigen eines Filters |
| US9463419B2 (en) * | 2012-01-09 | 2016-10-11 | General Electric Company | Pulse aeration for immersed membranes |
| WO2014004645A1 (en) | 2012-06-28 | 2014-01-03 | Siemens Industry, Inc. | A potting method |
| US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
| US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
| WO2015050764A1 (en) | 2013-10-02 | 2015-04-09 | Evoqua Water Technologies Llc | A method and device for repairing a membrane filtration module |
| WO2015171687A1 (en) | 2014-05-08 | 2015-11-12 | Georgia Tech Research Corporation | Cyclic filtration system |
| CN105274776B (zh) * | 2014-07-08 | 2019-03-08 | 青岛海尔智能技术研发有限公司 | 洗衣机及对洗衣机的过滤组件进行杀菌的控制方法 |
| CN104162367B (zh) * | 2014-09-03 | 2016-03-02 | 昆明滇池水务股份有限公司 | 一种高效节水、节药膜组器的清洗方法及装置 |
| RU2715536C1 (ru) * | 2015-05-01 | 2020-02-28 | Дед Си Воркс Лтд. | Система, устройство и способ для удаления загрязняющих осадков из фильтрационных мембран |
| US20180111097A1 (en) * | 2015-05-07 | 2018-04-26 | Sumitomo Electric Industries, Ltd. | Method of operating filtration apparatus and filtration apparatus |
| EP3322511B1 (de) | 2015-07-14 | 2022-09-07 | Rohm & Haas Electronic Materials Singapore Pte. Ltd | Belüftungsvorrichtung für filtrationssystem |
| US10450239B2 (en) | 2016-03-22 | 2019-10-22 | Dead Sea Works Ltd. | Spherical fertilizers and process for the production thereof |
| PL3529226T3 (pl) | 2016-10-22 | 2025-10-20 | Dead Sea Works Ltd. | Kompozycja nawozowa zawierająca środek wiążący |
| WO2018109773A1 (en) | 2016-12-17 | 2018-06-21 | Dead Sea Works Ltd. | A process for the production of potassium sulphate and magnesium sulphate from carnallite and sodium sulphate |
| CN110198779B (zh) | 2017-02-10 | 2022-06-28 | 艾斯尔欧洲合作社公司 | 杂卤石制粒方法 |
| CN107224880A (zh) * | 2017-06-30 | 2017-10-03 | 河南新投环保科技股份有限公司 | 一种平板膜在线清洗装置及其清洗方法 |
| WO2019075592A1 (zh) * | 2017-10-16 | 2019-04-25 | 陈永石 | 可改善处理均度的膜组件清洗装置 |
| CN109663505B (zh) * | 2017-10-27 | 2024-07-02 | 宁波乐惠国际工程装备股份有限公司 | 一种带有脉冲装置的过滤系统和一种过滤方法 |
| IL276686B2 (en) | 2018-02-27 | 2024-08-01 | Dead Sea Works Ltd | Potash dust granulation process |
| FI127838B (en) * | 2018-03-08 | 2019-03-29 | Sofi Filtration Oy | A method of cleaning a filter element and a filtering device |
| IL283118B2 (en) | 2018-11-23 | 2026-03-01 | ICL Europe Cooperatief UA | Occupied polyhalite and the process for its creation |
| CN113526728B (zh) * | 2021-07-22 | 2023-02-03 | 佛山市三水佛水供水有限公司 | 一种用于处理滤池反冲洗废水的快速膜滤装置及其使用方法 |
| CN116116230B (zh) * | 2023-04-04 | 2025-08-01 | 无锡药明生物技术股份有限公司 | 膜包清洁和使用方法 |
| CN120919714A (zh) * | 2025-09-17 | 2025-11-11 | 重庆望变电气(集团)股份有限公司 | 酸液过滤器的清污方法及酸液过滤控制系统 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0160014B1 (de) * | 1983-09-30 | 1993-01-07 | Memtec Limited | Reinigung von filtern |
| US4645542A (en) * | 1984-04-26 | 1987-02-24 | Anco Engineers, Inc. | Method of pressure pulse cleaning the interior of heat exchanger tubes located within a pressure vessel such as a tube bundle heat exchanger, boiler, condenser or the like |
| US4846976A (en) * | 1985-12-06 | 1989-07-11 | Memtec Limited | Treatment of emulsions |
| US5092355A (en) * | 1988-12-15 | 1992-03-03 | Westinghouse Electric Corp. | Pressure pulse method for removing debris from nuclear fuel assemblies |
| US5639373A (en) * | 1995-08-11 | 1997-06-17 | Zenon Environmental Inc. | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
| AUPM800694A0 (en) * | 1994-09-09 | 1994-10-06 | Memtec Limited | Cleaning of hollow fibre membranes |
| US6863823B2 (en) * | 2001-03-23 | 2005-03-08 | Zenon Environmental Inc. | Inverted air box aerator and aeration method for immersed membrane |
| US6656356B2 (en) * | 1998-10-09 | 2003-12-02 | Zenon Environmental Inc. | Aerated immersed membrane system |
| EP0813897A3 (de) * | 1996-06-21 | 1998-06-24 | Japan Pionics Co., Ltd. | Vorrichtung und Verfahren zur Entfernung von Staub |
| DE69916479T2 (de) * | 1998-10-09 | 2005-03-24 | Zenon Environmental Inc., Oakville | Zyklisch arbeitendes belüftungssystem für tauchmembranmodul |
| US6550747B2 (en) * | 1998-10-09 | 2003-04-22 | Zenon Environmental Inc. | Cyclic aeration system for submerged membrane modules |
| WO2001008789A2 (en) * | 1999-07-29 | 2001-02-08 | Zenon Environmental Inc. | Maintenance cleaning for membranes |
-
2003
- 2003-12-18 AT AT03813834T patent/ATE490018T1/de not_active IP Right Cessation
- 2003-12-18 WO PCT/US2003/040950 patent/WO2004056458A2/en not_active Ceased
- 2003-12-18 EP EP20030813834 patent/EP1585590B1/de not_active Expired - Lifetime
- 2003-12-18 US US10/740,657 patent/US7531042B2/en not_active Expired - Fee Related
- 2003-12-18 DE DE60335214T patent/DE60335214D1/de not_active Expired - Lifetime
- 2003-12-18 AU AU2003297476A patent/AU2003297476A1/en not_active Abandoned
- 2003-12-18 CN CNA2003801070247A patent/CN1761516A/zh active Pending
- 2003-12-18 ES ES03813834T patent/ES2358668T3/es not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60335214D1 (de) | 2011-01-13 |
| EP1585590B1 (de) | 2010-12-01 |
| EP1585590A2 (de) | 2005-10-19 |
| CN1761516A (zh) | 2006-04-19 |
| WO2004056458A2 (en) | 2004-07-08 |
| WO2004056458A3 (en) | 2005-03-03 |
| AU2003297476A1 (en) | 2004-07-14 |
| US20040139992A1 (en) | 2004-07-22 |
| US7531042B2 (en) | 2009-05-12 |
| ES2358668T3 (es) | 2011-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60335214D1 (de) | Verfahren zum reinigen und reinhalten einer membranfläche bei filtration | |
| DE60330037D1 (de) | Druckdampfstrahldüse sowie verfahren und gerät zur herstellung von vlies unter verwendung der düse | |
| ATA4552003A (de) | Vorrichtung und verfahren zum verbinden der stirnseiten von teilen | |
| ATE417185T1 (de) | Vorrichtung und verfahren zur behandlung einer injektionsflüssigkeit | |
| DE602004021727D1 (de) | Verfahren zum entfernen von verunreinigungen aus der mutterlauge bei der synthese von carbonsäure mit druckfiltration | |
| ATE240770T1 (de) | Verfahren zum abreinigen von rohrförmigen filterelementen | |
| DE69831095D1 (de) | Amplitudenmaske und vorrichtung und verfahren zum herstellen von filter mit langer gitterperiode unter verwendung derselben | |
| MY146707A (en) | Filtration apparatus | |
| DE602004018452D1 (de) | Kristall eines Nitrids der Gruppe III, Verfahren zur dessen Herstellung und Vorrichtung zur Herstellung eines Kristalls eines Nitrids der Gruppe III | |
| ATE409432T1 (de) | Verfahren zur verbesserung der herstellung von schaum während der zubereitung von getränken aus einer patrone und vorrichtung zu dessen implementierung | |
| ATA16402000A (de) | Membranfilteranlage und verfahren zum filtern | |
| ATE312661T1 (de) | Vorrichtung und verfahren zum herstellen von kristallinen teilchen | |
| DE60335931D1 (de) | Verfahren zur Herstellung einer Mikrostruktur, und Verfahren zur Herstellung eines Flüssigkeitsausstosskopfes | |
| DE60030214D1 (de) | Tintenbehälter, Tintenstrahlapparat, und Verfahren zum Herstellen des Tintenbehälters | |
| ATA113191A (de) | Verfahren zum herstellen von langgestreckten profilierten teilen und vorrichtung zur durchführung des verfahrens | |
| DE602004009411D1 (de) | Verfahren und vorrichtung zum zurückfalten von reifensturkturgliedern | |
| ATE253311T1 (de) | Verfahren zur herstellung von borsten zum applizieren von medien, nach dem verfahren hergestellte borsten und borstenware mit solchen borsten | |
| DE50214272D1 (de) | Piezoelektrisches bauelement und verfahren zu dessen herstellung | |
| DE50108379D1 (de) | Wasserlanzenbläser mit überwachungseinrichtung für die qualität des wasserstrahls und verfahren zu dessen betrieb | |
| DE60329344D1 (de) | Verfahren und Vorrichtung zum Herstellen von Metall-Schichten | |
| DE10318647B4 (de) | Verfahren und Vorrichtung zum Einstellen einer Einspritzeitdauer von Kraftstoff durch ein Einspritzventil | |
| DE60307965D1 (de) | Vorrichtung und Verfahren zum Ändern der Wiedergabegeschwindigkeit von gespeicherten Sprachsignalen | |
| DE60026899D1 (de) | Flüssigkeitsausstosskopf und Verfahren zu seiner Herstellung | |
| ATE228560T1 (de) | Verfahren zum reinigen von gegenständen, insbesondere filter für die nahrungsmittelproduktion | |
| DE69940377D1 (de) | Druckgerät und Verfahren zur Erzeugung eines gleichmässigen Druckes zum Niederhalten von Druckmedien |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |