EP1343587A2 - Dispositif d'extraction et d'emission de substances liquides - Google Patents

Dispositif d'extraction et d'emission de substances liquides

Info

Publication number
EP1343587A2
EP1343587A2 EP01985897A EP01985897A EP1343587A2 EP 1343587 A2 EP1343587 A2 EP 1343587A2 EP 01985897 A EP01985897 A EP 01985897A EP 01985897 A EP01985897 A EP 01985897A EP 1343587 A2 EP1343587 A2 EP 1343587A2
Authority
EP
European Patent Office
Prior art keywords
capillary
sieve
membrane
cannulas
chamber
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.)
Withdrawn
Application number
EP01985897A
Other languages
German (de)
English (en)
Inventor
Jens Albert
Thomas Henkel
Günter Mayer
Andreas Schober
Gregor Schlingloff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut fuer Physikalische Hochtechnologie eV
Original Assignee
Institut fuer Physikalische Hochtechnologie eV
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 Institut fuer Physikalische Hochtechnologie eV filed Critical Institut fuer Physikalische Hochtechnologie eV
Publication of EP1343587A2 publication Critical patent/EP1343587A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5025—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures for parallel transport of multiple samples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5025—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures for parallel transport of multiple samples
    • B01L3/50255—Multi-well filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B01J2219/00364—Pipettes
    • B01J2219/00367—Pipettes capillary
    • B01J2219/00369—Pipettes capillary in multiple or parallel arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B01J2219/00423—Means for dispensing and evacuation of reagents using filtration, e.g. through porous frits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00583—Features relative to the processes being carried out
    • B01J2219/00585—Parallel processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00583—Features relative to the processes being carried out
    • B01J2219/00603—Making arrays on substantially continuous surfaces
    • B01J2219/00659—Two-dimensional arrays
    • C—CHEMISTRY; METALLURGY
    • C40—COMBINATORIAL TECHNOLOGY
    • C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
    • C40B60/00—Apparatus specially adapted for use in combinatorial chemistry or with libraries
    • C40B60/14—Apparatus specially adapted for use in combinatorial chemistry or with libraries for creating libraries
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems

Definitions

  • the invention relates to a device for the controlled uptake and release of liquid substances, preferably for the uptake and release from or into micro- and nanotiter plates, wherein at the same time preferably all cavities of at least one row of a titer plate can be detected.
  • suction lifters for holding larger volumes are known, in which pipettes are provided at the same distance from each other in the form of a rake, all pipettes being connected together with a balloon, piston or similar assembly that can be pressurized with overpressure or underpressure, so that at the same time, several a liquid substance can be removed from adjacent containers.
  • a reactor for microchemical and / or microbiological reactions which comprises a pipette with a dosing approach (DE 196 42 777 AI), a reactive solid phase support with at least one immobilized reaction partner being provided in the pipette near its lower, narrowed end is.
  • a reactive solid phase support with at least one immobilized reaction partner being provided in the pipette near its lower, narrowed end is.
  • the surface of this elevation is preferably hydrophobic or solvent-repellent on the outside and inside by chemical coating or by a physical structuring or combinations of both (e.g. a self-cleaning surface "seif cleaning surface”).
  • the invention is based on the object of specifying a device with the aid of which a large number of different liquid substances can also be simultaneously absorbed from microplates or nanotiter plates, can be dispensed again in the same grid in defined partial volumes if required, and the possibility of carrying out one or more chemical substances or biological reactions in the device itself and a simultaneous absorption of liquid substances of different viscosity should be possible.
  • the essence of the invention is that at least in one row, equally spaced capillary cannulas are provided, which are brought into a communicating connection with a chamber to which an overpressure or underpressure can be applied, the capillary cannulas being embedded in a plate and at least the capillary cannula ends on the inside of the pressure chamber a sieve-like membrane is assigned and above each capillary cannula end there is a space for the absorption of a liquid substance, within which there is the possibility of carrying out chemical or biological reactions, the spaces being separated from one another and all the spaces together within those that can be pressurized with overpressure or underpressure Are arranged chamber, wherein the capillary cannulas are designed so that their internal volume is smaller than the volume that can be absorbed by each capillary.
  • the present invention permits a highly parallel liquid transfer and the removal of substance, in particular from micro or Namotiter plates of comparable design or comparable containers.
  • the proposed device can be used both for solid-phase-coupled syntheses and in particular for liquid-phase syntheses in all variants.
  • the decisive advantage of the device is that defined volumes of different viscosities can be simultaneously absorbed and dispensed, a highly parallel and efficient liquid transfer being ensured.
  • transfer operations for bioassay applications can be carried out effectively with this device, for example dilution series of library substances in the assay.
  • bioassays can also be carried out after washing, introducing the target substance into solution and after photo-cleaving the synthesized library substances.
  • Another possible use is the removal of substances for further analysis processes by transferring them into corresponding analysis vessels.
  • the integration of bioassay and synthesis made possible by the device also enables software-supported evaluation.
  • Figure 1 shows a possible embodiment of the device for receiving and dispensing liquid substances in a longitudinal section.
  • FIG. 2b shows a second possible embodiment of parts of the device essential to the invention
  • FIG. 2c shows a third possible option for parts of the device essential to the invention
  • Fig. 3 shows a preferred embodiment of the device with the formation of spaces of defined volume within which reactions can be carried out; and Fig. 4 shows, by way of example, a lower view of the device, which is provided with cannulas in several rows and columns, the mutual spacing of which is the cavity grid of a titer plate which can be put in place equivalent.
  • FIG. 1 shows schematically a possible embodiment of the device in a longitudinal section.
  • Capillary cannulas 1, which are equally spaced from one another, are provided in a row, which are brought into a communicating connection together with a chamber 2, which can be pressurized with an overpressure or negative pressure via a connector 8, the capillary cannulas 1, which are in particular designed as steel cannulas, which are inserted into a Plate 3 are inserted and fixed by gluing.
  • a sieve-like membrane 4 Depending on the design, ie depending on the size of the perforations provided for the sieve-like membranes 4, it can be achieved in the example according to FIG.
  • the assigned capillaries should have a volume of 1 nl to 120 nl.
  • any other dimensions with regard to the volumes mentioned are possible, however, in the event that 5 reactions are to be carried out in the rooms, it must be ensured that the respective rooms 5 have a larger volume than the capillary cannulas assigned to them to prevent crosstalk of reaction liquids between rooms 5.
  • FIG. 2a shows a first embodiment of parts of the device shown in FIG. 1 that are essential to the invention.
  • the spaces 5 mentioned and the sieve-like membranes 4 are through one-piece component 6 is formed, into which a plurality of recesses for forming the rooms 5 are made down to a floor area 61 and the respective remaining floor areas are provided with a perforation 62.
  • FIG. 2b shows a second embodiment of parts of the device shown in FIG. 1 which are essential to the invention.
  • the spaces 5 are formed by a component 6, into which a plurality of continuous recesses 63 are initially made, which are provided with separate sieve-like membranes 4 on the sides facing the capillary cannulas 1.
  • FIG. 2c shows a third embodiment of parts of the device shown in FIG. 1 which are essential to the invention.
  • the sieve-like membrane 4 is formed by a continuous membrane which covers all the recesses 63 and is introduced as a network between the plate 3 and the component 6 by gluing.
  • FIG. 1 A preferred embodiment of the device with the formation of spaces 5 of defined volume, within which reactions can be carried out, is shown in FIG.
  • two one-piece silicon or glass wafers 6a and 6b are provided, in each of which recesses are made congruent down to the bottom area and each have sieve-like membranes 4; 7 are introduced into the remaining floor areas by selective etching, which is known per se and therefore cannot be explained further here.
  • the wafers 6a and 6b thus produced are attached to the sieve-like membranes 4; 7 opposite side connected to each other by anodic bonding, gluing or other joining techniques, which are also common methods that require no further explanation here.
  • the sieve-like membrane 4 is given a sieve hole width of 10 ⁇ m and the membrane 7 has a sieve hole width of 1 ⁇ m.
  • the respective rooms 5, in each of which a reaction is to be carried out, have a volume of 1 ⁇ l in the example and the capillary cannulas 1 have a volume of 100 nl.
  • a liquid reaction can be carried out, for example, as follows: Five different dissolved reagents are each taken up in succession with the device by an appropriately set negative pressure and drawn through the capillary-side sieve 4, so that the volume remains in the reaction space. Any further volume taken up is mixed with that in the reaction space during this process. The more fine-pored membrane 7 prevents the liquid from entering the chamber 2. Depending on the materials used for the device, reactions can also be carried out at elevated temperature.
  • the chamber 2 which can be subjected to an overpressure or underpressure to be detachable from the plate 3 (as indicated in FIG. 1) or at least openable above the recesses 63 (not shown in more detail) in order to provide a second access option to create the rooms 5, so that the rooms 5, in the case of designs according to FIGS. 1 and 2a to 2c from above, can be filled with an agent, if appropriate, with a second device designed analogously to the device described. Likewise, with the provided opening possibility of the chamber 2, a flooding of the rooms 5 can be realized.
  • Frits so they perform the same function as the sieve-like membranes.
  • FIG. 4 shows an example of a lower view of a device, a plurality of capillary cannulas 1, which are equally spaced from one another in rows Z and columns Sp, being introduced into the plate 3 in a matrix-like manner and corresponding to the cavity distribution of a titer plate, not shown here. 4 space 5, not shown, for the absorption of a liquid substance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Clinical Laboratory Science (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un dispositif d'extraction et d'émission contrôlées de substances liquides. L'invention vise à mettre en oeuvre un dispositif permettant d'extraire et d'émettre simultanément une pluralité de substances liquides, même différentes, à partir de plaques de microtitrage ou de nanotitrage, et de réaliser une ou plusieurs réactions chimiques ou biologiques, ledit dispositif permettant par ailleurs de prélever des substances liquides de viscosités différentes. A cet effet, une ligne comporte des canules capillaires (1) disposées à intervalles réguliers, amenées en communication fluidique avec une chambre (2) pouvant être soumise à une surpression ou une sous-pression. Lesdites canules capillaires (1) sont encastrées dans une plaque (3), et une membrane de type passoire (4) est affectée au moins aux extrémités de canule capillaire (11) du côté intérieur de la chambre de pression, un espace (5) étant respectivement prévu au dessus de chaque extrémité de canule capillaire pour la réception d'une substance liquide. Ces espaces (5) sont séparés l'un de l'autre, et sont tous disposés dans la chambre (2) pouvant être soumise à une surpression ou une sous-pression.
EP01985897A 2000-12-18 2001-12-18 Dispositif d'extraction et d'emission de substances liquides Withdrawn EP1343587A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10063733 2000-12-18
DE10063733 2000-12-18
PCT/EP2001/014953 WO2002049763A2 (fr) 2000-12-18 2001-12-18 Dispositif d'extraction et d'emission de substances liquides

Publications (1)

Publication Number Publication Date
EP1343587A2 true EP1343587A2 (fr) 2003-09-17

Family

ID=7668092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01985897A Withdrawn EP1343587A2 (fr) 2000-12-18 2001-12-18 Dispositif d'extraction et d'emission de substances liquides

Country Status (3)

Country Link
US (1) US20040168728A1 (fr)
EP (1) EP1343587A2 (fr)
WO (1) WO2002049763A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003055589A2 (fr) * 2001-12-31 2003-07-10 Institut für Physikalische Hochtechnologie e.V. Plaque de microtitration pour l'execution en parallele de plusieurs microsyntheses, en particulier a temperatures elevees
FR2853565A1 (fr) * 2003-04-11 2004-10-15 Commissariat Energie Atomique Microdispositif de transfert collectif d'une pluralite de liquide
DE10356752A1 (de) * 2003-12-04 2005-06-30 Roche Diagnostics Gmbh Beschichtete Testelemente
US7588724B2 (en) * 2004-03-05 2009-09-15 Bayer Healthcare Llc Mechanical device for mixing a fluid sample with a treatment solution
US7771655B2 (en) * 2006-07-12 2010-08-10 Bayer Healthcare Llc Mechanical device for mixing a fluid sample with a treatment solution
DE102007005323A1 (de) * 2007-01-29 2008-07-31 Bioplan Consulting Gmbh Absaugeinrichtung
CN114308149B (zh) * 2021-11-29 2024-03-01 北京机械设备研究所 一种芯片密封装置和自封模块化的芯片设备

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833155A1 (de) * 1978-07-28 1980-02-14 Metallgesellschaft Ag Vorrichtung zum dosieren und/oder verteilen von fluessigen medien
DE3171592D1 (en) * 1980-09-25 1985-09-05 Terumo Corp Plasma separator
US4816155A (en) * 1986-07-14 1989-03-28 Klr Machines, Inc. Juice drainage system
US5000921A (en) * 1986-10-24 1991-03-19 Hanaway Richard W Multiple pipette samples
FR2617963B1 (fr) * 1987-07-10 1991-12-06 Cohen Daniel Procede et dispositif de repartition d'un volume primaire d'un fluide avantageusement un liquide, en un nombre determine de volumes secondaires presentant une relation predefinie entre eux, par l'emploi d'orifices d'evacuation repartis symetriquement dans une chambre de repartition elle-meme symetrique
US5002667A (en) * 1990-10-30 1991-03-26 National Research Council Of Canada Fluid fractionating, stacked permeable membrane envelope assembly, and a fluid distributing and permeable membrane sealing collar
US5209259A (en) * 1991-01-15 1993-05-11 E. I. Du Pont De Nemours And Company Fluid distribution system having noise reduction mechanism
US5407274A (en) * 1992-11-27 1995-04-18 Texaco Inc. Device to equalize steam quality in pipe networks
ATE173539T1 (de) * 1995-02-01 1998-12-15 Rossendorf Forschzent Elektrisch steuerbare mikro-pipette
US5560811A (en) * 1995-03-21 1996-10-01 Seurat Analytical Systems Incorporated Capillary electrophoresis apparatus and method
US5856100A (en) * 1995-12-08 1999-01-05 The Institute Of Physical And Chemical Research Method for purification and transfer to separation/detection systems of DNA sequencing samples and plates used therefor
EP0865824B1 (fr) * 1997-03-20 2004-05-19 F. Hoffmann-La Roche Ag Dispositif de pipetage micromécanique
CA2391758C (fr) * 1999-08-13 2010-02-16 Cartesian Technologies, Inc. Appareil pour la manipulation d'echantillons de liquides
WO2001077640A2 (fr) * 2000-04-05 2001-10-18 Alexion Pharmaceuticals, Inc. Procedes et dispositifs de stockage et de distribution de liquides
US6289914B1 (en) * 2000-08-16 2001-09-18 Novartis Ag Microflow splitter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0249763A3 *

Also Published As

Publication number Publication date
US20040168728A1 (en) 2004-09-02
WO2002049763A3 (fr) 2002-10-10
WO2002049763A2 (fr) 2002-06-27

Similar Documents

Publication Publication Date Title
DE19950809B4 (de) Verfahren und Vorrichtung für eine Flüssigkeitsübertragung
EP1171232B1 (fr) Dispositif de manipulation de fluide a conversion de format
DE60207708T2 (de) Mikrofluidik-Systeme zum Kombinieren diskreter Fluidvolumen
DE60221036T2 (de) Vorrichtung zum Erzeugen von Emulsionen und Mikrokapseln
DE69821302T2 (de) System zur Handhabung von Verbindungen, bestehend aus Gefässen und Trägern
EP1313551B1 (fr) Dispositif et procede pour deposer sans contact des microgouttelettes sur un substrat
EP1160573A2 (fr) Plaque de microtitrage et dispositif de pipetage multivoies couplé à celui
WO1999046045A1 (fr) Porte-echantillon
DE10326607A1 (de) Vorrichtung zum Handhaben von Flüssigkeiten
DE3220444A1 (de) Pipetten-probenehmer
EP1070963B1 (fr) Bac de rinçage
DE19941871A1 (de) Vorrichtung und Verfahren zum Aufbringen einer Mehrzahl von Mikrotröpfchen auf ein Substrat
EP1161995B1 (fr) Procédé et dispositif pour absorber un milieu dans un dispositif capillaire
EP1343587A2 (fr) Dispositif d'extraction et d'emission de substances liquides
EP1165227B1 (fr) Reacteur a microcolonnes
EP1351766B1 (fr) Dispositif et procede de dosage de petites quantites de liquide
DE102010047384B4 (de) Vorrichtung und Verfahren zur Erzeugung oder zur Ablage eines Fluidstroms aus Fluidsegmenten und ihre Verwendung
WO1999001209A1 (fr) Micromelangeur dynamique commutable avec des volumes morts minimums
DE10329983A1 (de) Mikroreaktorsystem mit einer Reaktionsräume aufweisenden Trägerplatte und Verfahren zum Betrieb desselben
WO2012041479A1 (fr) Puce microfluidique pourvue de plusieurs ensembles cylindre-piston
DE20022875U1 (de) Vorrichtung zur Aufnahme und Abgabe von flüssigen Substanzen
DE102005000835B3 (de) Verfahren und Vorrichtung zur Dosierung kleiner Flüssigkeitsmengen
DE60116326T2 (de) Hochparallele herstellung von mikroarrays mittels tintenstrahldruckkopf
WO2002087760A1 (fr) Procede et dispositif pour stocker et doser de petites quantites de liquide
DE102004062280A1 (de) Verfahren und Vorrichtung zum Dispensieren von Flüssigkeiten im Mikroraster

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030704

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050701