WO2008052517A1 - Couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, procédé de production d'une couche d'oxyde anodique et conducteur électrique doté d'une couche d'oxyde anodique - Google Patents

Couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, procédé de production d'une couche d'oxyde anodique et conducteur électrique doté d'une couche d'oxyde anodique Download PDF

Info

Publication number
WO2008052517A1
WO2008052517A1 PCT/DE2007/001929 DE2007001929W WO2008052517A1 WO 2008052517 A1 WO2008052517 A1 WO 2008052517A1 DE 2007001929 W DE2007001929 W DE 2007001929W WO 2008052517 A1 WO2008052517 A1 WO 2008052517A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxide layer
electrolyte
anodic oxide
test
microns
Prior art date
Application number
PCT/DE2007/001929
Other languages
German (de)
English (en)
Other versions
WO2008052517A8 (fr
Inventor
Gerd Alisch
Klaus Buchholz
Siegfried Steinhäuser
Bernhard Wielage
Original Assignee
Steinert Elektromagnetbau Gmbh
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 Steinert Elektromagnetbau Gmbh filed Critical Steinert Elektromagnetbau Gmbh
Priority to DE112007003217T priority Critical patent/DE112007003217A5/de
Publication of WO2008052517A1 publication Critical patent/WO2008052517A1/fr
Publication of WO2008052517A8 publication Critical patent/WO2008052517A8/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/23—Corrosion protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires

Definitions

  • Anodic oxide layer for electrical conductors in particular conductors made of aluminum, method for producing an anodic oxide layer and electrical conductor with anodic oxide layer
  • the invention relates to an anodic oxide layer for electrical conductors, in particular conductors of aluminum, e.g. in the form of ribbons or wires. Furthermore, the invention relates to a method for producing an anodic oxide layer. Finally, the invention relates to a subsequently anodized electrical conductor.
  • the invention is for an embodiment of the electrical conductor as an electrical winding or coil z. B. applicable in a transformer.
  • an apparatus for the continuous anodization of aluminum strips with which strips are unilaterally anodized with direct current in various electrolytes, for example sulfuric, oxalic and phosphoric acid.
  • the tape to be anodized is guided horizontally through the bath.
  • the oxide layer is formed on the band side, which is opposite to the cathode.
  • the electrolyte for example, 20% sulfuric acid may be used at a temperature of 40 ° C, an anodic current density of 10A / dm 2, and a voltage of 30V.
  • the aluminum strip is continuously passed through the bath at a very high speed.
  • the electrolyte is based on inorganic acids and contains functional carboxyl and / or hydroxyl groups as well as metal salts, e.g. trivalent chromium salt.
  • the oxide layers produced in this way find their use as a primer for organic layers and for the production of packaging.
  • DE 100 65 649 A1 discloses a device and a method for electrochemical metallizing, etching, oxidizing and reducing electrically conductive and flexible strips in continuous flow systems.
  • electrode rollers which are provided on the lateral surface with an ion-permeable and electrically insulating layer.
  • the material to be treated is passed through the system during the pass around the electrode rollers.
  • the bath tension for electrolytic treatment is applied to the material to be treated and to the electrode roller (counter electrode).
  • US Pat. No. 6,261,437 describes a method and a device for anodising aluminum wires for high-voltage equipment and electrical installations. A portion of certain length of the metal conductor is wrapped around the holder, so that all windings are separated from each other on a comb-shaped device. The winding holder with the wound wire is immersed in the electrolyte. The wire is connected to the plus pole of the power source and anodized. The oxide layer produced in this way has sufficient adhesive strength and good insulating properties.
  • an operating electrolyte according to DE 101 04 714 C for an aluminum electrolytic capacitor which comprises ethylene glycol, p-nitrobenzoic acid, ammonium hypophosphite, ammonium pentaborate, polyethylene glycol, MMA 1 ORA and ammonium methyl benzoate, the addition of methylbenzoic acid, the by their methyl substitution sterically the Subsequent reaction of the acid group with ethylene glycol blocked, an operating electrolyte with improved long-term stability of the electrical conductivity can be produced.
  • the acids used in this electrolyte function as the insulating ability improving substances. These could be used as an additive for aftertreatment solutions.
  • DE 196 80 596C teaches a process for the aftertreatment of the microporous oxide layers produced on workpieces made of aluminum, magnesium, titanium by anodic or plasma-chemical anodic oxidation.
  • This method is characterized in that silica in the form of a lyosol in which the colloidally dispersed SiO 2 particles are smaller in at least one dimension than the diameter of the pores or capillaries of the microporous cover layer. The particles are introduced under varying pressure conditions in the pores or capillaries.
  • the prior art provides no indication of the effect of post-treatment with plastics (e.g., PTFE) on the breakdown voltage and ductility of the layer.
  • plastics e.g., PTFE
  • the invention therefore has the object of developing on the basis of investigations an anodic oxide layer for electrical conductors, in particular conductors made of aluminum, a method for producing an anodic oxide layer and electrical conductor with anodic oxide layer and its formation, with which both the breakdown voltage as well as the ductility can be positively influenced. This considering the following criteria:
  • the commonly used sulfuric acid electrolyte should be the reference. On this basis, the electrolyte type and composition are to be varied.
  • Post-treatment should be carried out after re-compaction. Based on this, the aftertreatments with new, subsequently introduced substances for this process are to be improved.
  • anodic oxide layer for electrical conductors in particular conductors of aluminum in the form of bands or wires, wherein for the production of the oxide layer
  • an electrolyte which is oriented in its type and composition to the reference of a sulfuric acid electrolyte and optionally variable in its composition, b) at least one selected type of current and shape and possibly their superpositions are used and c ) is introduced in a compacting after-treatment of the surface of the oxide layer, a substance which is based on the reference of a recompression of an aggregate form of water,
  • HM Martens hardness
  • e an increase in the wear resistance compared to conventional parameters, such as a wear depth of about 100 microns to ⁇ 70 microns according to vibrational wear test and a Ritzenergie Why [J / mm 2 ] of 0, 03 to> 0.05 at normal forces of 2 N and from 0.45 to> 0.5 at normal forces of 50 N according to scratch test
  • f an improvement in ductility (crack sensitivity, cracking tendency) in comparison of 0.24 to 0, 30 [elongation at the 1st crack, using as a measure of the ductility the fracture elongation in%] according to conditions of the microbending test with a maximum force of 50 N, a path of max. 4800 microns, a sample of 1 45 xb 10 xh 0.3 mm, one
  • G has a corrosion resistance by a layer thickness of the oxide layer from 5 microns and h) at an oxide thickness of about 6 microns and a thermal stress of about 2 hours at 250 ° C a breakdown voltage safety of more than
  • 300 V is exposable.
  • an electrolyte comprising the constituents 15 to 30% by volume of sulfuric acid with an addition of 5 to 30 g of oxalic acid / 1 sulfuric acid, g) the introduction of an alternating current in sine, rectangular, triangular or trapezoidal form or a combination of these and with a frequency up to 700 Hz, h) the use of a paint as a substance before the compacting post-treatment and i) compliance with a Temperature of 25 ... 50 ° C j) provided.
  • the electrolyte should advantageously contain 20% by volume of sulfuric acid, 15 g of oxalic acid / 1 sulfuric acid and an enrichment with Al particles in a concentration in the range of about 3.5 g Al ... about 13 g Al / 1 electrolyte, wherein the concentration is variable depending on the passage speed of the conductor in the bath, have.
  • the introduced alternating current can be used in alternating pulse shapes and / or pulse sequences, which improves the breakdown voltage strength and ductility of the layer.
  • the introduced alternating current has a voltage of less than 50V.
  • the anodization time is ⁇ 120 s and can be varied depending on the passage speed of the conductor in the bath and / or the current intensity and / or the treatment interval.
  • the aftertreatment with the respective anodizing color includes the steps
  • the electrical conductor with anodic oxide layer in its use as in coils, windings or the like. According to the invention
  • This electrical conductor has a dielectric strength of about 6 microns and a thermal stress of about 2 h at 250 ° C a breakdown voltage of more than 300 V.
  • the oxide layer has a porosity of 3 to 8 pores / nm.
  • an electrolyte which is oriented in its type and composition to the reference of a sulfuric acid electrolyte and optionally variable in its composition, b) at least one selected type of current and shape and possibly their superpositions are used and c ) is introduced in a compacting after-treatment of the surface of the oxide layer, a substance which is based on the reference of a recompression of an aggregate form of water,
  • a Ritzenergy (J / mm] from 0.03 to> 0.05 at normal forces of 2 N and from 0.45 to> 0.5 at normal forces of 50 N according to Ritzprüf die, f) an improvement in ductility (crack sensitivity, cracking tendency ) in comparison of 0.24 to 0.30 [elongation at the 1st crack in%] according to conditions of the micro bending test with a maximum force of 50 N, a way of max. 4800 ⁇ m, one Test piece of 1 45 xb 10 xh 0.3 mm, a test speed of
  • the increased wear resistance of the oxide layer according to the scratch test test can have a Ritzenergy Why [J / mm 2 ] of ⁇ 0.6 at 50 N, and the improved ductility from a size of> 0.31.
  • an electrolyte comprising the constituents 15 to 30% by volume of sulfuric acid with an addition of 5 to 30 g of oxalic acid / 1 sulfuric acid, g) the introduction of an alternating current in sine, rectangular, triangular or trapezoidal form or a combination of these and with a frequency up to 700 Hz, h) the use of a paint as a substance before the compacting post-treatment and i) compliance with a Temperature of 25 ... 50 ° C.
  • the electrolyte should advantageously have a proportion of 20 vol.% Sulfuric acid.
  • the electrolyte may have a content of 15 g of oxalic acid / 1 sulfuric acid.
  • the introduced alternating current can be used in the combination form trapezoid - sine. Also this is in the combination form sine, rectangle, trapezium selectable. It is also conceivable for special treatments alternating pulse shapes and / or pulse sequences of the current to improve the breakdown voltage strength and ductility of the layer.
  • the introduced alternating current has a voltage of ⁇ 50V.
  • the anodization time is ⁇ 120 s, it can be varied as a function of the passage speed of the conductor in the bath and / or the current intensity and / or the treatment interval up to this limit.
  • the method basically comprises the steps
  • the color red or green is used as the anodizing color.
  • the colors used can current, such as so-called GTL-Oxalanmaschine or
  • An electrical conductor treated according to this method has an oxide layer corresponding to a breakdown voltage safety of 30 to 60 V / layer thickness, a Marten hardness [HM] of> 2300, an increase in the wear resistance in comparison to conventional parameters, such as
  • a Ritzenergy For [J / mm 2 ] from 0.03 to> 0.05 at normal forces of 2 N and from 0.45 to> 0.5 at normal forces of 50 N according to scratch test, an improvement in ductility (crack sensitivity, cracking tendency) in comparison from 0.24 to 0.30 [elongation at the 1st crack in%] according to conditions of the micro bending test with a maximum force of 50 N, a way of max. 4800 .mu.m, a test piece of 1 45 xb 10 xh 0.3 mm, a test speed of 20 microns / s and a span of 40 mm and receives a corrosion resistance by a layer thickness of the oxide layer from 5 microns.
  • This conductor is processible into coils, windings or the like which require these properties.
  • Such electrical conductors can be produced with an anodic oxide layer having a breakdown voltage of more than 300 V at an oxide layer thickness of about 6 microns and a thermal stress of about 2 hours at 250 ° C.
  • an insulation resistance of> 200k ⁇ can be achieved, wherein the oxide layer has a porosity of 3 to 8 pores / nm 2 .
  • Such an electrical conductor with anodic oxide layer is z. B. for use in transformers on a removable carrier to form a coil or winding as a metallic metal oxide layer winding conductor to an array of electrically series-connected connections of a plurality of coils and segments of a tapped total winding, wherein the lying in the overall winding at the input and output Coils can be supplemented with additional layers of insulating material.
  • the additional layers may consist of a film corresponding to the heat classes.
  • the punctual additional insulation can also consist of a heat class corresponding film, wherein the taps connections can be provided from a non-anodized Al conductor.
  • the production of an oxide layer for the conductor with high breakdown voltage safety is an essential prerequisite.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Insulated Conductors (AREA)

Abstract

L'invention concerne une couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, un procédé de fabrication d'une couche d'oxyde anodique et un conducteur électrique doté d'une couche d'oxyde anodique devant comprendre, afin d'améliorer la sécurité vis-à-vis de la tension de claquage et la ductilité : a) l'utilisation, lors de la fabrication de la couche d'oxyde, d'un électrolyte dont le type et la composition prennent modèle sur la référence d'un électrolyte d'acide sulfurique, b) l'application d'au moins un type de courant choisi et c) l'introduction, lors d'un traitement de densification de la surface de la couche d'oxyde, d'une substance, qui prend modèle sur la référence d'une densification d'une forme agrégée à partir de l'eau, de sorte que la couche d'oxyde fabriquée d) présente une dureté selon Martens [HM] supérieure à 2300, e) possède une résistance à l'usure augmentée par rapport aux grandeurs caractéristiques habituelles, f) se voit attribuer d'une amélioration de la ductilité, g) présente une résistance améliorée à la corrosion et h) peut être exposée en toute sécurité à une tension de claquage de plus de 300 V.
PCT/DE2007/001929 2006-11-02 2007-10-27 Couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, procédé de production d'une couche d'oxyde anodique et conducteur électrique doté d'une couche d'oxyde anodique WO2008052517A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007003217T DE112007003217A5 (de) 2006-11-02 2007-10-27 Anodische Oxidschicht für elektrische Leiter, insbesondere Leiter aus Aluminium, Verfahren zur Erzeugung einer anodischen Oxidschicht und elektrischer Leiter mit anodischer Oxidschicht

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006052170.6 2006-11-02
DE200610052170 DE102006052170A1 (de) 2006-11-02 2006-11-02 Anodische Oxidschicht für elektrische Leiter, insbesondere Leiter aus Aluminium, Verfahren zur Erzeugung einer anodischen Oxidschicht und elektrischer Leiter mit anodischer Oxidschicht

Publications (2)

Publication Number Publication Date
WO2008052517A1 true WO2008052517A1 (fr) 2008-05-08
WO2008052517A8 WO2008052517A8 (fr) 2008-07-10

Family

ID=39099849

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001929 WO2008052517A1 (fr) 2006-11-02 2007-10-27 Couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, procédé de production d'une couche d'oxyde anodique et conducteur électrique doté d'une couche d'oxyde anodique

Country Status (2)

Country Link
DE (2) DE102006052170A1 (fr)
WO (1) WO2008052517A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112962130A (zh) * 2021-03-12 2021-06-15 兰州大学 铝绕组表面的耐高温绝缘层材料及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963409A (en) * 1957-10-07 1960-12-06 Reynolds Metals Co Flexible anodic coating
US3112250A (en) * 1961-04-26 1963-11-26 Walker Henry Anodizing method and solutions
GB1070782A (en) * 1963-06-13 1967-06-01 John Gilbert Simmons Improvements in anodising aluminium and its alloys
US4043880A (en) * 1975-07-24 1977-08-23 Sumitomo Aluminum Smelting Co., Ltd. Method for producing green-colored anodic oxide film on aluminum or aluminum base alloy articles
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy
WO2002004716A1 (fr) * 2000-07-10 2002-01-17 Basf Aktiengesellschaft Procede de traitement de surfaces de pieces en aluminium ou en alliages d'aluminium a l'aide de formulations contenant de l'acide alcanesulfonique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1788468U (de) * 1959-01-22 1959-05-14 Wilhelm Dr Ing Lepper Isolierter kupferleiter, insbesondere fuer wicklungen elektrischer maschinen und transformatoren.
US4177299A (en) * 1978-01-27 1979-12-04 Swiss Aluminium Ltd. Aluminum or aluminum alloy article and process
WO1984004934A1 (fr) * 1983-06-13 1984-12-20 Hoechst Ag Procede et installation pour l'oxydation anodique unilaterale continue de bandes d'aluminium et leur utilisation lors de la fabrication de plaques d'impression offset
US4526660A (en) * 1984-02-06 1985-07-02 Garriga Eliseo B Anodizing method
FR2808291B1 (fr) * 2000-04-26 2003-05-23 Mofratech Procede electrolytique d'oxydation pour l'obtention d'un revetement ceramique a la surface d'un metal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963409A (en) * 1957-10-07 1960-12-06 Reynolds Metals Co Flexible anodic coating
US3112250A (en) * 1961-04-26 1963-11-26 Walker Henry Anodizing method and solutions
GB1070782A (en) * 1963-06-13 1967-06-01 John Gilbert Simmons Improvements in anodising aluminium and its alloys
US4043880A (en) * 1975-07-24 1977-08-23 Sumitomo Aluminum Smelting Co., Ltd. Method for producing green-colored anodic oxide film on aluminum or aluminum base alloy articles
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy
WO2002004716A1 (fr) * 2000-07-10 2002-01-17 Basf Aktiengesellschaft Procede de traitement de surfaces de pieces en aluminium ou en alliages d'aluminium a l'aide de formulations contenant de l'acide alcanesulfonique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112962130A (zh) * 2021-03-12 2021-06-15 兰州大学 铝绕组表面的耐高温绝缘层材料及其制备方法

Also Published As

Publication number Publication date
DE112007003217A5 (de) 2009-10-01
WO2008052517A8 (fr) 2008-07-10
DE102006052170A1 (de) 2008-05-08

Similar Documents

Publication Publication Date Title
DE2420704C3 (de) Verfahren zum kontinuierlichen Eloxieren eines Aluminiumbandes und Vorrichtung zur Durchführung dieses Verfahrens
DE2444398C2 (de) Verfahren zum elektrolytischen Erzeugen einer farbigen Oxidschicht
DE2853609C2 (fr)
CH665048A5 (de) Verfahren zum abscheiden eines isolierenden ueberzugs auf blanke teile von elektrischen verbindungselementen.
DE2313106C2 (de) Verfahren zum Herstellen eines mindestens einlagigen elektrischen Verbindungssystems
EP0722515B1 (fr) Procede d'application d'un revetement superficiel par galvanisation
DE2329189A1 (de) Verfahren und vorrichtung zum herstellen isolierter elektrischer leiter, insbesondere bandfoermiger mehrfachleiter, sowie mehrfachleiter
DE4209733A1 (de) Verfahren zur elektrolytischen Beschichtung von Substraten und dergleichen
WO2008052517A1 (fr) Couche d'oxyde anodique pour conducteur électrique, en particulier conducteur en aluminium, procédé de production d'une couche d'oxyde anodique et conducteur électrique doté d'une couche d'oxyde anodique
DD142360A1 (de) Verfahren zur erzeugung alpha-al tief 2 o tief 3-haltiger schichten auf aluminiummetallen
EP0279146B1 (fr) Procédé de coloration électrolytique d'une couche d'oxyde anodique sur l'aluminium ou un alliage de l'aluminium
EP2906740A1 (fr) Dispositif d'anodisation et procédé d'anodisation de corps tubulaires
DE68907290T2 (de) Verfahren zur kontinuierlichen Emaillierung von Drähten aus einer Aluminiumlegierung, bestimmt für die Herstellung von Windungen.
EP0224443A1 (fr) Procédé de fabrication d'un microfiltre
DE4327876A1 (de) Meßstrecke für einen elektromagnetischen Durchflußmesser und Verfahren zu ihrer Herstellung
DE1496718A1 (de) Verfahren zur Herstellung gefaerbter anodischer Oxydueberzuege
EP3410450A1 (fr) Anneau de protection et/ou de compensation d'inclinaison pour une bobine de transformateur
AT335815B (de) Verfahren und vorrichtung zur kontinuierlichen anodischen behandlung von aluminium
DE3225083A1 (de) Verfahren zur anodischen behandlung einer verzinnten metalloberflaeche
DD160749A3 (de) Verfahren zur anodischen oxidation von tantal und -legierungen
WO2022008122A1 (fr) Convertisseur de puissance à barres omnibus en aluminium anodisées en couleur et procédé de fabrication d'un tel convertisseur de puissance
DE19932098B4 (de) Verfahren zum elektrolytischen Färben von Aluminium-Oberflächen
EP4301091A1 (fr) Procédé de fabrication d'un dispositif de chauffage et dispositif de chauffage
DE2244467C3 (de) Verfahren zur Herstellung eines Aluminiumdrahtes mit einer elektrischen Isolationsschicht durch Behandeln mit einer Chromat enthaltenden Lösung
AT210033B (de) Vorrichtung zum Formieren von Aluminiumfolien für Elektrolytkondensatoren

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07846266

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1120070032170

Country of ref document: DE

REF Corresponds to

Ref document number: 112007003217

Country of ref document: DE

Date of ref document: 20091001

Kind code of ref document: P

122 Ep: pct application non-entry in european phase

Ref document number: 07846266

Country of ref document: EP

Kind code of ref document: A1