DK241388A - Fremgangsmaade og apparat til rensning af hulfiberfilter - Google Patents

Fremgangsmaade og apparat til rensning af hulfiberfilter

Info

Publication number
DK241388A
DK241388A DK241388A DK241388A DK241388A DK 241388 A DK241388 A DK 241388A DK 241388 A DK241388 A DK 241388A DK 241388 A DK241388 A DK 241388A DK 241388 A DK241388 A DK 241388A
Authority
DK
Denmark
Prior art keywords
fiber filter
cleaning air
air fiber
cleaning
filter
Prior art date
Application number
DK241388A
Other languages
English (en)
Other versions
DK241388D0 (da
Inventor
Douglas Lyons Ford
Noel Barton
Original Assignee
Memtec Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Memtec Ltd filed Critical Memtec Ltd
Publication of DK241388D0 publication Critical patent/DK241388D0/da
Publication of DK241388A publication Critical patent/DK241388A/da

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02Membrane cleaning or sterilisation ; Membrane regeneration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/22Controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2313/00Details relating to membrane modules or apparatus
    • B01D2313/48Mechanisms for switching between regular separation operations and washing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/04Backflushing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/16Use of chemical agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18Use of gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
DK241388A 1986-09-04 1988-05-04 Fremgangsmaade og apparat til rensning af hulfiberfilter DK241388A (da)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPH784786 1986-09-04
AUPH992887 1987-01-19
PCT/AU1987/000301 WO1988001529A1 (en) 1986-09-04 1987-09-04 Cleaning of hollow fibre filters

Publications (2)

Publication Number Publication Date
DK241388D0 DK241388D0 (da) 1988-05-04
DK241388A true DK241388A (da) 1988-06-24

Family

ID=25643163

Family Applications (1)

Application Number Title Priority Date Filing Date
DK241388A DK241388A (da) 1986-09-04 1988-05-04 Fremgangsmaade og apparat til rensning af hulfiberfilter

Country Status (7)

Country Link
US (1) US4921610A (da)
EP (1) EP0280717A4 (da)
JP (1) JPH01501046A (da)
AU (1) AU605187B2 (da)
DK (1) DK241388A (da)
NO (1) NO177218C (da)
WO (1) WO1988001529A1 (da)

Families Citing this family (110)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460639B (sv) * 1987-08-31 1989-11-06 Gambro Dialysatoren Anordning foer diffusion och/eller filtrering samt foerfarande foer framstaellning av densamma
FR2665086B1 (fr) * 1990-07-30 1992-12-18 Lorraine Carbone Procede et dispositif de decolmatage en microfiltration tangentielle.
FR2666245B1 (fr) * 1990-08-31 1992-10-23 Lyonnaise Eaux Procede de commande des modes de fonctionnement d'un appareil automatique de filtration d'eau sur membranes tubulaires.
FR2668078B1 (fr) * 1990-10-17 1992-12-24 Dumez Lyonnaise Eaux Procede pour le retrolavage de membrane tubulaires de filtration, et dispositif de mise en óoeuvre.
US5198116A (en) * 1992-02-10 1993-03-30 D.W. Walker & Associates Method and apparatus for measuring the fouling potential of membrane system feeds
DE4209588C2 (de) * 1992-03-25 1995-02-02 Guetling Gmbh Ölabscheider mit integrierter Mikrofiltrations-Einrichtung und Verfahren zu ihrer Reinigung
US5403489A (en) * 1993-06-24 1995-04-04 Minnesota Mining And Manufacturing Company Solid phase extraction method and apparatus
US5403479A (en) * 1993-12-20 1995-04-04 Zenon Environmental Inc. In situ cleaning system for fouled membranes
JPH07236818A (ja) * 1994-02-25 1995-09-12 Dick Deguremon Kk 内圧式中空糸モジュールの逆洗方法
FR2723002B1 (fr) * 1994-07-26 1996-09-06 Hospal Ind Dispositif et procede pour preparer un liquide de traitement par filtration
AUPM800694A0 (en) * 1994-09-09 1994-10-06 Memtec Limited Cleaning of hollow fibre membranes
US5505854A (en) * 1994-09-09 1996-04-09 Electric Power Research Institute Two continuous filtration system for supplying filtrate to automatic analyzers
ES2331809T3 (es) * 1995-03-15 2010-01-15 Siemens Water Technologies Corp. Sistema de control y monitorizacion de filtracion.
US6077435A (en) * 1996-03-15 2000-06-20 Usf Filtration And Separations Group Inc. Filtration monitoring and control system
US5958243A (en) * 1996-07-11 1999-09-28 Zenon Environmental Inc. Apparatus and method for membrane filtration with enhanced net flux
US5888401A (en) * 1996-09-16 1999-03-30 Union Camp Corporation Method and apparatus for reducing membrane fouling
US20040232076A1 (en) * 1996-12-20 2004-11-25 Fufang Zha Scouring method
EP0952885B1 (en) * 1996-12-20 2010-09-22 Siemens Water Technologies Corp. Scouring method
US6120688A (en) * 1997-02-25 2000-09-19 Zenon Environmental, Inc. Portable reverse osmosis unit for producing drinking water
US6641733B2 (en) * 1998-09-25 2003-11-04 U. S. Filter Wastewater Group, Inc. Apparatus and method for cleaning membrane filtration modules
US6402954B1 (en) * 1997-12-01 2002-06-11 O'keefe, Jr. Patrick J. Method and apparatus for monitoring and cleaning a fluid filter system
US6074551A (en) * 1998-04-30 2000-06-13 Culligan Water Conditioning Of Fairfield County Automatic cleaning system for a reverse osmosis unit in a high purity water treatment system
EP0989404B1 (de) * 1998-09-23 2008-06-25 WTW Wissenschaftlich-Technische Werkstätten GmbH & Co. KG Wasser- und Abwasseranalysevorrichtung
TWI222895B (en) 1998-09-25 2004-11-01 Usf Filtration & Separations Apparatus and method for cleaning membrane filtration modules
AUPP985099A0 (en) * 1999-04-20 1999-05-13 Usf Filtration And Separations Group Inc. Membrane filtration manifold system
US6322703B1 (en) 1999-04-20 2001-11-27 Asahi Kasei Kabushiki Kaisha Method for purifying aqueous suspension
US6168714B1 (en) * 1999-05-17 2001-01-02 North Carolina A&T University Flux-enhanced cross-flow membrane filter
US6627082B2 (en) 1999-06-10 2003-09-30 Envirogen, Inc. System and method for withdrawing permeate through a filter and for cleaning the filter in situ
US6331251B1 (en) * 1999-06-10 2001-12-18 Envirogen, Inc. System and method for withdrawing permeate through a filter and for cleaning the filter in situ
US20050178729A1 (en) * 1999-07-30 2005-08-18 Rabie Hamid R. Maintenance cleaning for membranes
US6589426B1 (en) * 1999-09-29 2003-07-08 Zenon Environmental Inc. Ultrafiltration and microfiltration module and system
AUPQ680100A0 (en) * 2000-04-10 2000-05-11 Usf Filtration And Separations Group Inc. Hollow fibre restraining system
AUPR064800A0 (en) * 2000-10-09 2000-11-02 Usf Filtration And Separations Group Inc. Improved membrane filtration system
AUPR094600A0 (en) * 2000-10-23 2000-11-16 Usf Filtration And Separations Group Inc. Fibre membrane arrangement
AUPR143400A0 (en) * 2000-11-13 2000-12-07 Usf Filtration And Separations Group Inc. Modified membranes
FR2817768B1 (fr) * 2000-12-13 2003-08-29 Lyonnaise Eaux Eclairage Procede de regulation d'une installation de filtration sur membranes
AUPR421501A0 (en) 2001-04-04 2001-05-03 U.S. Filter Wastewater Group, Inc. Potting method
AUPR584301A0 (en) * 2001-06-20 2001-07-12 U.S. Filter Wastewater Group, Inc. Membrane polymer compositions
AUPR692401A0 (en) 2001-08-09 2001-08-30 U.S. Filter Wastewater Group, Inc. Method of cleaning membrane modules
AUPR774201A0 (en) * 2001-09-18 2001-10-11 U.S. Filter Wastewater Group, Inc. High solids module
ATE333318T1 (de) * 2001-11-16 2006-08-15 Us Filter Wastewater Group Inc Methode zur reinigung von membranen
SE521186C2 (sv) * 2001-11-30 2003-10-07 Tetra Laval Holdings & Finance Förfarande och anordning för testning av rengöringseffektivitet för ett filter i ett filtersystem
CN100518908C (zh) * 2002-01-09 2009-07-29 美国海德能公司 用于改进空心纤维薄膜的过滤性能的方法
KR100421052B1 (ko) * 2002-01-24 2004-03-04 삼성전자주식회사 탈이온수 제조 장치 및 그 사용 방법
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
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
TWI296205B (en) * 2002-09-27 2008-05-01 Mitsubishi Rayon Co Hollow fiber membrane module, hollow fiber membrane module unit, membrane filtering device using the same, and operating method thereof
CA2501628C (en) 2002-10-10 2012-12-04 U.S. Filter Wastewater Group, Inc. A filtration and backwashing arrangement for membrane modules
AU2002953111A0 (en) 2002-12-05 2002-12-19 U. S. Filter Wastewater Group, Inc. Mixing chamber
US6984331B2 (en) * 2003-05-14 2006-01-10 Steris Inc. Filter cleaning and decontaminating system
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
US8268176B2 (en) 2003-08-29 2012-09-18 Siemens Industry, Inc. Backwash
AU2004289373B2 (en) 2003-11-14 2010-07-29 Evoqua Water Technologies Llc Improved module cleaning method
DE602004025607D1 (de) * 2003-12-07 2010-04-01 Univ Ben Gurion Verfahren und system zur verbesserung der rückgewinnung und verhinderung der bildung von ablagerungen durch fällung bei druckgetriebenen membranverfahren
US20050194315A1 (en) * 2004-02-27 2005-09-08 Adams Nicholas W.H. Membrane batch filtration process
KR100453329B1 (ko) * 2004-03-08 2004-10-21 주식회사 나노엔텍 밀도 조절형 섬유사 정밀여과장치
US8758621B2 (en) 2004-03-26 2014-06-24 Evoqua Water Technologies Llc Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
WO2005107929A2 (en) 2004-04-22 2005-11-17 Siemens Water Technologies Corp. Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
JP2008504122A (ja) * 2004-07-02 2008-02-14 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 気体輸送膜
EP1773477B1 (en) 2004-07-05 2011-09-07 Siemens Water Technologies Corp. Hydrophilic membranes
US7410587B2 (en) * 2004-08-03 2008-08-12 Scilog, Inc. Liquid handling for filtration and preparative chromatography
NZ588094A (en) 2004-08-20 2012-04-27 Siemens Water Tech Corp Potting head for hollow fibre filter module
AU2005282211B2 (en) 2004-09-07 2011-04-21 Evoqua Water Technologies Llc Reduction of backwash liquid waste
US8506806B2 (en) 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
EP1807181A4 (en) 2004-09-15 2009-04-22 Siemens Water Tech Corp CONTINUOUS ADJUSTABLE VENTILATION
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
MY141919A (en) * 2004-12-03 2010-07-30 Siemens Water Tech Corp Membrane post treatment
ATE549076T1 (de) 2004-12-24 2012-03-15 Siemens Industry Inc Reinigung in membranfiltrationssystemen
CA2591580A1 (en) 2004-12-24 2006-06-29 Siemens Water Technologies Corp. Simple gas scouring method and apparatus
US20060266705A1 (en) * 2005-04-22 2006-11-30 Arnold Janson Refreshing chemicals during membrane cleaning
CN101184548B (zh) 2005-04-29 2011-10-05 西门子水技术公司 用于膜滤器的化学清洗剂
NZ563980A (en) * 2005-06-20 2011-07-29 Siemens Water Tech Corp Cross linking treatment of polymer membranes
ES2599640T3 (es) * 2005-07-12 2017-02-02 Zenon Technology Partnership Control de procedimiento para un sistema de membrana sumergido
WO2007006104A1 (en) 2005-07-14 2007-01-18 Siemens Water Technologies Corp. Monopersulfate treatment of membranes
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
US7563363B2 (en) 2005-10-05 2009-07-21 Siemens Water Technologies Corp. System for treating wastewater
WO2007044415A2 (en) 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Method and apparatus for treating wastewater
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
US7455765B2 (en) 2006-01-25 2008-11-25 Siemens Water Technologies Corp. Wastewater treatment system and method
US20110059462A1 (en) * 2006-02-21 2011-03-10 University Of South Florida Automated particulate concentration system
US8293098B2 (en) 2006-10-24 2012-10-23 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
EP2129629A1 (en) 2007-04-02 2009-12-09 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
CN100556798C (zh) * 2007-04-27 2009-11-04 华中科技大学 透析分离纯化法制备钙磷生物材料的生产装置
EP2152390B1 (en) 2007-05-29 2012-05-23 Siemens Industry, Inc. Membrane cleaning with pulsed airlift pump
NL2000799C2 (nl) * 2007-08-08 2009-02-10 Prime Water Internat N V Inrichting voor het filtreren van verontreinigd water.
US7895084B2 (en) * 2008-05-15 2011-02-22 Doapp, Inc. Method and system for providing purchasing on a wireless device
EP2331242B1 (en) 2008-07-24 2018-09-05 Evoqua Water Technologies LLC Frame system for membrane filtration modules
AU2009282912B2 (en) 2008-08-20 2014-11-27 Evoqua Water Technologies Llc Improved membrane system backwash energy efficiency
WO2010142673A1 (en) 2009-06-11 2010-12-16 Siemens Water Technologies Corp. Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane
US9314742B2 (en) 2010-03-31 2016-04-19 Toyota Motor Engineering & Manufacturing North America, Inc. Method and system for reverse osmosis predictive maintenance using normalization data
US8221628B2 (en) 2010-04-08 2012-07-17 Toyota Motor Engineering & Manufacturing North America, Inc. Method and system to recover waste heat to preheat feed water for a reverse osmosis unit
EP2563501B1 (en) 2010-04-30 2019-05-15 Evoqua Water Technologies LLC Fluid flow distribution device
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US8505324B2 (en) 2010-10-25 2013-08-13 Toyota Motor Engineering & Manufacturing North America, Inc. Independent free cooling system
JP6060074B2 (ja) 2011-04-25 2017-01-11 日本碍子株式会社 セラミックフィルターの洗浄方法
CN103958024B (zh) 2011-09-30 2016-07-06 伊沃夸水处理技术有限责任公司 改进的歧管排列
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
AU2013280452B2 (en) 2012-06-28 2017-07-20 Evoqua Water Technologies Llc A potting method
WO2014052071A1 (en) 2012-09-26 2014-04-03 Evoqua Water Technologies Llc Membrane securement device
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
KR20150059788A (ko) 2012-09-27 2015-06-02 에보쿠아 워터 테크놀로지스 엘엘씨 침지된 막을 위한 가스 스코어링 장치
EP2745916B1 (en) * 2012-12-18 2018-01-24 Grundfos Holding A/S Method of cleaning a liquid fluid filter
EP3052221B1 (en) 2013-10-02 2022-12-14 Rohm & Haas Electronic Materials Singapore Pte. Ltd Device for repairing a membrane filtration module
RU2606986C2 (ru) 2014-10-27 2017-01-10 Закрытое Акционерное Общество "Аквафор Продакшн" (Зао "Аквафор Продакшн") Система очистки жидкости
WO2016117081A1 (ja) * 2015-01-22 2016-07-28 株式会社クボタ 管状ろ過膜の洗浄方法
US10214430B2 (en) 2015-03-04 2019-02-26 Israel Aerospace Industries Ltd. Water treatment system and method
CN107847869B (zh) 2015-07-14 2021-09-10 罗门哈斯电子材料新加坡私人有限公司 用于过滤系统的通气装置
JP6960791B2 (ja) * 2017-07-19 2021-11-05 株式会社クラレ 中空糸膜濾過装置の洗浄方法及び中空糸膜濾過装置
RU2686199C1 (ru) * 2018-09-27 2019-04-24 Общество С Ограниченной Ответственностью "Аквафор" (Ооо "Аквафор") Система очистки жидкости

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2457844C3 (de) * 1974-12-06 1978-06-08 Vadim Petrovitsch Abramov Steuervorrichtung für periodisch arbeitende Filter
US4332264A (en) * 1980-03-03 1982-06-01 United Healthcare Association Automated cleaning system for dialyzers
DE3116610C2 (de) * 1981-04-27 1986-06-19 Ruslan Ivanovič Batyrev Verfahren zur Steuerung einer Filteranlage
US4414113A (en) * 1982-09-29 1983-11-08 Ecodyne Corporation Liquid purification using reverse osmosis hollow fibers
EP0160014B1 (en) * 1983-09-30 1993-01-07 Memtec Limited Cleaning of filters
AT381645B (de) * 1984-08-30 1986-11-10 Frings & Co Heinrich Verfahren und vorrichtung zur langzeit-ultrafiltration einer fluessigkeit
JPS61119276A (ja) * 1984-11-14 1986-06-06 株式会社 ニツシヨ− 限外濾過量制御装置
JPH0649137B2 (ja) * 1984-11-15 1994-06-29 バクスター・インターナショナル・インコーポレーテッド 濾過装置に於る濾液流量制御システム及びその方法
DE3687024T2 (de) * 1985-03-05 1993-03-11 Memtec Ltd Konzentrierung von feststoffen in einer suspension.
FR2586202B1 (fr) * 1985-08-13 1989-11-17 Meridional Oenologie Centre Procedes et dispositifs de decolmatage en marche d'un filtre tangentiel

Also Published As

Publication number Publication date
AU7963787A (en) 1988-03-24
EP0280717A4 (en) 1988-10-24
WO1988001529A1 (en) 1988-03-10
EP0280717A1 (en) 1988-09-07
NO881925D0 (no) 1988-05-03
AU605187B2 (en) 1991-01-10
DK241388D0 (da) 1988-05-04
NO177218B (no) 1995-05-02
NO177218C (no) 1995-08-09
JPH01501046A (ja) 1989-04-13
US4921610A (en) 1990-05-01
NO881925L (no) 1988-06-28

Similar Documents

Publication Publication Date Title
DK241388D0 (da) Fremgangsmaade og apparat til rensning af hulfiberfilter
DK461487D0 (da) Fremgangsmaade og apparat til rensning af roeggas.
DK418188D0 (da) Fremgangsmaade og apparat til rensning af spildgasser eller spildluft
DK398586A (da) Fremgangsmaade og apparat til rensning af afgangsluft
DK270487A (da) Fremgangsmaade og apparat til fremstilling af mandelmasse
DK259189A (da) Fremgangsmaade og apparat til fremstilling af mikrokapsler
DK630387A (da) Fremgangsmaade og apparat til fremstilling af fyldstofholdigt papir
DK312886D0 (da) Fremgangsmaade og apparat til rensning af hydrogen
DK471381A (da) Fremgangsmaade og apparat til rengoering af bassiner
DK152963C (da) Apparat til rengoering af taepper og lignende
DK674688D0 (da) Fremgangsmaade og apparat til brygning af filtreret kaffe
DK378388A (da) Fremgangsmaade og apparat til fremstilling af pyramidestubformede daaseemner
DK336583D0 (da) Fremgangsmade og apparat til fremstilling af persienner
DK300589A (da) Fremgangsmaade og apparat til fremstilling af lynlaase
DK156889D0 (da) Fremgangsmaade og apparat til rensning af jordlag
NO840358L (no) Fremgangsmaate og apparat til vasking av tremassefibre
DK419088D0 (da) Fremgangsmaade og apparat til fremstilling af vekselspaending
DK583187A (da) Fremangsmaade og apparat til profilering af raaemner til optiske fibre
NO862530D0 (no) Fremgangsmaate og apparat til rengjoering av filterelementer
DK295087D0 (da) Fremgangsmaade og apparat til oparbejdning af saagods
DK458288A (da) Fremgangsmaade og apparat til maaling af loddemiddeltykkelse
DK227888A (da) Fremgangmaade og apparat til rensning af vaesker
NO169668C (no) Fremgangsmaate og apparat for elektroplettering av fibre
DK81389D0 (da) Fremgangsmaade og apparat til separering af bakterier
NO844187L (no) Fremgangsmaate og anordning for fremstilling av fibermasse

Legal Events

Date Code Title Description
AHS Application shelved for other reasons than non-payment