EP2153459A2 - Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension - Google Patents

Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension

Info

Publication number
EP2153459A2
EP2153459A2 EP08760336A EP08760336A EP2153459A2 EP 2153459 A2 EP2153459 A2 EP 2153459A2 EP 08760336 A EP08760336 A EP 08760336A EP 08760336 A EP08760336 A EP 08760336A EP 2153459 A2 EP2153459 A2 EP 2153459A2
Authority
EP
European Patent Office
Prior art keywords
pulse generator
ferritic
spiral pulse
spiral
voltage
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Withdrawn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
EP08760336A
Other languages
German (de)
English (en)
Inventor
Andreas Kloss
Steffen Walter
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.)
Osram GmbH
Original Assignee
Osram 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
Priority claimed from PCT/EP2007/055544 external-priority patent/WO2007141286A2/fr
Application filed by Osram GmbH filed Critical Osram GmbH
Priority to EP08760336A priority Critical patent/EP2153459A2/fr
Priority to CN200880018014A priority patent/CN101681793A/zh
Publication of EP2153459A2 publication Critical patent/EP2153459A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback

Definitions

  • the invention relates to a high-voltage pulse generator according to the preamble of claim 1.
  • Such generators can be used in particular for the ignition of high-pressure discharge lamps for general lighting or for photo-optical purposes or for motor vehicles.
  • the invention further relates to a high pressure discharge lamp with such a generator and a manufacturing method thereof.
  • a capacitor is normally connected via a switch, e.g. a spark gap, discharged into the primary winding of an ignition transformer. In the secondary winding of the desired high voltage pulse is then induced.
  • a switch e.g. a spark gap
  • the object of the present invention is to specify a spiral pulse generator which can be used as a high-temperature-resistant pulse generator of a very compact design.
  • Another object is to provide a method of manufacturing such a compact spiral pulse generator. [9] This object is achieved by the characterizing features of claim 9
  • Another object is to provide a high-pressure discharge lamp, the ignition behavior is significantly improved over previous lamps and in which no damage due to the high voltage is to be feared.
  • a high-voltage pulse with at least 1.5 kV, which is necessary for igniting the lamp, is now generated by means of a special temperature-resistant spiral pulse generator, which is integrated in the outer bulb in the immediate vicinity of the discharge vessel. Not only a cold ignition but also a hot re-ignition is possible.
  • LTCC a so-called LTCC component.
  • This material is a special ceramic that shows up to 600 0 C, in particular exemplary form even to 1000 0 C temperature stability.
  • LTCC has already been used in connection with lamps, see US 2003/0001519 and US Pat. No. B 6,853,151. However, it has been used for quite different purposes in lamps that are practically barely exposed to temperature, with typical temperatures - A -
  • the spiral pulse generator is a component that combines the characteristics of a capacitor with those of a waveguide to produce ignition pulses with a voltage of at least 1.5 kV, for the production of two ceramic "green films" with metallic conductive paste printed or provided with a metallic foil and then added to a spiral wound and finally pressed isostatically to a shaped body.
  • the following co-sintering of metal paste and ceramic film takes place in air in the temperature range between 800 and 900 ° C. This processing allows a range of application of the spiral pulse generator to 700 0 C temperature load.
  • the spiral pulse generator can be accommodated in the immediate vicinity of the discharge vessel in the outer bulb, but also in the base or in the immediate vicinity of the lamp.
  • spiral pulse generator can also be used for other applications, because it is not only high temperature stable, but also extremely compact.
  • the spiral pulse generator is designed as an LTCC component consisting of ceramic foils and metallic conductive paste.
  • the spiral should have at least 5 turns.
  • an ignition unit can be specified which remains at least one charging resistor and a switch.
  • the switch can be a spark gap or a Diac in SiC technology.
  • Housing in the outer bulb is preferred in the case of an application for lamps. Because this eliminates the need for a high voltage resistant voltage supply.
  • a spiral pulse generator can be dimensioned so that the high-voltage pulse even enables hot-ignition of the lamp.
  • the large pulse width also facilitates the breakdown in the discharge volume.
  • any conventional glass can be used, ie in particular tempered glass, Vycor or quartz glass.
  • the choice of filling is not particularly limited.
  • the ferrite material to the spiral pulse generator by means of a dip-coating method (so-called dip-coat method).
  • This method ensures a uniform, thin ferrite layer, which can be adjusted by multiple application of the method in thickness.
  • the LTCC generator body is immersed in about half way into a low-viscosity slurry of ceramic ferrite material.
  • the processing can be adapted by additives to the application.
  • the fact that the ferrite layer is sintered after the immersion coating process forms a firm and reliable connection to the LTCC generator body.
  • ferrite material As ferrite material, all the usual materials such as Ba hexaferrite, NiZnCu ferrites and MnZn ferrites can be used.
  • the generator may be temperature-stable up to 500 ° C and for installation in a HID lamp, preferably in the outer bulb or in the immediate vicinity of the bulb, e.g. in the socket, be suitable. Further applications are e.g. Generation of ignition pulses for petrol engines, high-voltage pulses for test purposes (insulation test), generation of high-voltage pulses for decorative discharges (magic bullet).
  • the spiral pulse generator is completely embedded in a ferritic potting compound.
  • the polymeric potting compound is filled between 10% and 80% with high permeability ferrite powder.
  • the crosslinking of the potting compounds can take place via polymerization, polyaddiation, or polycondensation.
  • the initial reaction of the crosslinking can take place via UV-sensitive or thermally activated catalysts or initiators.
  • Fig. 1 shows the basic structure of a spiral pulse generator
  • FIG. 3 shows the basic structure of a high pressure sodium lamp with spiral pulse generator in the outer bulb.
  • Fig. 4 shows the basic structure of a metal halide lamp with spiral pulse generator in the outer piston.
  • Figure 5 is a metal halide lamp with spiral pulse generator in the outer bulb.
  • FIG. 6 shows a metal halide lamp with a spiral pulse generator in the base
  • Figure 7 is a spiral pulse generator of a
  • FIG. 8 shows the voltage curve on a spiral generator connected as an ignition transformer.
  • FIG. 9 shows a spiral pulse generator with an applied ferrite layer according to the method of the invention
  • FIG. 10 shows the voltage curve on a spiral-pulse generator connected as ignition transformer, which is enveloped by a ferritic potting compound in comparison to a spiral-wound potting compound.
  • Figure 1 shows the structure of a spiral pulse generator 1 in plan view. It consists of a ceramic cylinder 2, in which two different metallic conductors 3 and 4 are spirally wrapped as a film strip.
  • the cylinder 2 is hollow inside and has a given inner diameter ID.
  • the two inner contacts 6 and 7 of the two conductors 3 and 4 are approximately opposite and are connected to each other via a spark gap 5.
  • the spiral pulse generator is either wound from two ceramic paste-coated ceramic foils or made up of two metal foils and two ceramic foils.
  • An important parameter is the number n of turns, which should preferably be in the order of 5 to 100.
  • This winding assembly is then laminated and then sintered, creating an LTCC component.
  • the thus created spiral pulse generators with capacitor property are then connected with a spark gap and a charging resistor.
  • the spark gap can occur at the inner or the outer terminals or also within the winding of the
  • a spark gap can preferably be used. which is based on SiC and is very temperature stable.
  • the switching element MESFET from the company Cree can be used. This is suitable for temperatures above 350 0 C.
  • a ceramic foil in particular a ceramic strip such as Heratape CT 707 or preferably CT 765 or else a mixture of both, in each case by Heraeus, is preferably used as the dielectric. It has a thickness of the green film of typically 50 to 150 microns.
  • Ag conductive paste such as "Cofirable Silver", also from Heraeus, is used as the conductor.
  • a concrete example is CT 700 from Heraeus. Good results are also provided by the metal paste 6142 from DuPont. These parts are easy to laminate and then burnout and sintering together (co-firing).
  • the ID of the spiral pulse generator is 10 mm.
  • the width of the individual strips is also 10 mm.
  • the film thickness is 50 ⁇ m and also the thickness of the two conductors is 50 ⁇ m in each case.
  • a partial ferrite layer of appropriate thickness is applied to it according to the invention.
  • the spiral pulse generator is immersed in a low-viscosity slurry of ceramic ferrite material. After drying the slurry, a ferritic layer is formed on the ring surface, which is then sintered at temperatures between 800 0 C and 900 0 C. To form a stronger ferrite layer, the process can be repeated several times. However, several dipping operations can take place between the sintering processes in order to accelerate the entire coating process.
  • FIG. 9 shows a spiral pulse generator 31 having such a ferrite layer 35.
  • Suitable ferrite materials are the following ferrites:
  • the material systems of the Hexaferrite and the NiZnCu ferrites include all magnetic ferritic spin structures.
  • the slip systems contain at least one binder of PVB (polyvinyl butyral), ethyl cellulose, epoxide, acrylate or a mixture of the abovementioned substances.
  • PVB polyvinyl butyral
  • ethyl cellulose epoxide
  • acrylate a mixture of the abovementioned substances.
  • the slip systems contain at least one dispersant.
  • the dispersant may be, for example, oleic acid, menhylene oil (fish oil) or KDl, or a mixture thereof.
  • the slip systems contain at least one polar or one nonpolar solvent or mixtures thereof.
  • the slip systems contain at least one plasticizer, e.g. Phthalate compounds.
  • the spiral pulse generator is completely or partially enveloped by a ferritic potting compound.
  • the potting compound consists of a polymeric material system, which is filled to 10% up to 80% with ferrite powder.
  • the spiral pulse generator itself preferably consists of a capacitive ceramic material with an ⁇ r of 4 to 2000.
  • the ferritic potting compound here preferably has a permeability ⁇ r of 1 to 5,000.
  • the following polymeric material systems are suitable for the bonding:
  • the crosslinking of these potting compounds can take place via polymerization, polyaddition or polycondensation.
  • the initialization of the crosslinking reaction preferably takes place via UV-sensitive or thermally activated catalysts or initiators.
  • the ferritic powder consists of ceramic ferrites, metallic ferrites or any mixture of both materials.
  • the ceramic ferrites are preferably made of two ferrite classes:
  • the metallic ferrites are preferably made of the following metals:
  • the ferrite powder which may consist of a mixture of the above materials, is mixed with the polymeric composition in the appropriate ratio.
  • a good result is obtained, for example, with a potting compound of 60 vol% Mn / Zn ferrite (eg N27 from Epcos) and 40 vol% epoxy resin (eg Vitralit 1605 from Panacol).
  • the finished sintered spiral pulse generator is placed in a preform with the electrical connections led upwards.
  • the potting compound is poured into this preform, so that the spiral pulse generator is completely enveloped. Subsequently, the structure for 30 minutes at 120 0 C is fully cured.
  • the polymeric portion of the potting compound acts electrically as a homogeneous ferrite with an air gap, the air gap width being determined by the polymeric resin, whose ⁇ r is approximately one.
  • the impedance of the spiral pulse generator can be adapted to the inductance of the short-circuiting switch (usually a spark gap or a Zener diode in SiC technology). This adaptation is possible on the one hand by the geometric structure of the casting and on the other hand by the magnetic properties of the casting compound itself (ferrite material, mixing ratio ferrite material / polymer resin).
  • FIG. 10 shows the voltage curve on a switched as ignition transformer spiral pulse generator, which is coated with a ferritic potting compound (signal 111) in comparison to a spiral pulse generator without ferrite (signal 113).
  • a ferritic potting compound signal 111
  • the ferritic envelope of the oscillation frequency of the ignition pulse can be adapted to the conditions in the application, so that here further gains in the efficiency of the overall system can be achieved.
  • the advantages of the second embodiment lie in a cost-effective manufacturing method, since the Vergußharze are cheaper than matched finished ferrite cores.
  • the main advantage of the second embodiment is the simpler processing, since the final product is produced in a single step and thus can be produced in a more cost-effective manner.
  • a product according to the second embodiment is not temperature-resistant and thus not suitable for use in the outer bulb in addition to a high-pressure discharge lamp burner.
  • a spiral pulse generator e.g. as an ignition coil in automobiles, as a high voltage source in consumer devices such as magic bullets etc.
  • FIG. 3 shows the basic structure of a high-pressure sodium lamp 10 with ceramic discharge vessel 11 and outer bulb 12 with integrated therein Spiralpulsgenerator 13, wherein an ignition electrode 14 is externally attached to the ceramic discharge vessel 11.
  • the spiral pulse generator 13 is accommodated with the spark gap 15 and the charging resistor 16 in the outer bulb.
  • FIG. 4 shows the basic design of a metal halide lamp 20 with integrated spiral pulse generator 31, wherein no ignition electrode is attached to the outside of the discharge vessel 22, which may be made of quartz glass or ceramic.
  • the spiral pulse generator 31 is housed with the spark gap 23 and the charging resistor 24 in the outer bulb 25.
  • FIG. 5 shows a metal halide lamp 20 with a discharge vessel 22, which is supported by two supply lines 26, 27 in an outer bulb.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod which is remote from the base
  • an ignition unit 36 is arranged, which the
  • Ladewiderstand 24 includes, as indicated in Figure 4.
  • FIG. 6 shows a metal halide lamp 20 similar to FIG. 5 with a discharge vessel 22 which is held by two supply lines 26, 27 in an outer bulb 25.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod that leads to the socket remote 28 implementation.
  • the ignition unit is arranged in the base 30, both of the Spiral pulse generator 31, as well as the spark gap 23 and the charging resistor 24th
  • This technique can also be used for electrodeless lamps, where the spiral pulse generator can serve as a starting aid.
  • the invention develops particular advantages in conjunction with high-pressure discharge lamps for car headlights, which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV.
  • the spiral pulse generator can be arranged in the base of the lamp or in an outer bulb of the lamp.
  • the invention develops very special advantages in conjunction with high-pressure discharge lamps that contain no mercury.
  • Such lamps are particularly desirable for environmental reasons. They contain one ne suitable metal halide filling and in particular a noble gas such as xenon under high pressure. Because of the lack of mercury, the ignition voltage is particularly high. It is more than 20 kV.
  • a spiral pulse generator with integrated charging resistor can be accommodated either in the base of the mercury-free lamp or in an outer bulb of the lamp.
  • FIG. 7 shows a schematic representation of a spiral pulse generator 31, which is surrounded by a ferrite core 34 in a classical manner as a double E core.
  • the ferrite core 34 has a rectangular frame 32 and a central web 33 which traverses the cavity in the spiral pulse generator 31.
  • Figure 8 shows the voltage curve (in V) on such a switched as ignition transformer spiral pulse generator as a function of time (in ⁇ s).

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

L'invention concerne un générateur d'impulsions haute tension compact sur la base d'un générateur d'impulsions en spirale, ledit générateur d'impulsions en spirale étant entièrement ou partiellement enveloppé d'un matériau ferritique. L'invention concerne également un procédé d'enduction permettant d'enduire un générateur d'impulsions en spirale d'une couche ferritique, lequel procédé consiste soit à plonger le générateur d'impulsions en spirale dans une barbotine de faible viscosité puis, après avoir fait sécher la barbotine, à fritter le générateur à une température comprise entre 500°C et 900°C, soit à envelopper ledit générateur d'une masse de scellement ferritique, qui est ensuite durcie sous l'effet de la chaleur ou d'un rayonnement ultraviolet. L'invention concerne également une lampe à décharge haute pression comprenant une enceinte à décharge placée dans une ampoule externe, un dispositif d'amorçage étant intégré dans la lampe, lequel dispositif génère des impulsions haute tension dans la lampe, ce dispositif d'amorçage étant un générateur d'impulsions en spirale, placé dans l'ampoule externe et faisant fonction de transformateur d'amorçage, ledit générateur étant entièrement ou partiellement enveloppé d'un matériau ferritique.
EP08760336A 2007-06-06 2008-06-02 Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension Withdrawn EP2153459A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08760336A EP2153459A2 (fr) 2007-06-06 2008-06-02 Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension
CN200880018014A CN101681793A (zh) 2007-06-06 2008-06-02 具有高压脉冲发生器的高压放电灯以及制造高压脉冲发生器的方法

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/EP2007/055544 WO2007141286A2 (fr) 2006-06-08 2007-06-06 Lampe à décharge à haute pression avec générateur d'impulsions à haute tension et procédé de fabrication d'un générateur d'impulsions à haute tension
EP08760336A EP2153459A2 (fr) 2007-06-06 2008-06-02 Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension
PCT/EP2008/056749 WO2008148725A2 (fr) 2007-06-06 2008-06-02 Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension

Publications (1)

Publication Number Publication Date
EP2153459A2 true EP2153459A2 (fr) 2010-02-17

Family

ID=40111011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760336A Withdrawn EP2153459A2 (fr) 2007-06-06 2008-06-02 Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension

Country Status (5)

Country Link
US (1) US20100176728A1 (fr)
EP (1) EP2153459A2 (fr)
JP (1) JP2010529604A (fr)
CN (1) CN101681793A (fr)
WO (1) WO2008148725A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8749161B2 (en) * 2010-10-28 2014-06-10 General Electric Company Compact fluorescent lamp and LED light source with electronic components in base
CN109714027B (zh) * 2018-12-28 2023-03-31 中国工程物理研究院应用电子学研究所 一种纳秒宽谱脉冲产生装置以及产生方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680509A (en) * 1985-12-23 1987-07-14 Gte Laboratories, Inc. Method and apparatus for starting high intensity discharge lamps
DE102004044368A1 (de) * 2004-09-10 2006-03-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Transformator und Zündvorrichtung mit einem Transformator sowie Hochdruckentladungslampe mit einem Transformator
DE102006026750A1 (de) * 2006-06-08 2007-12-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008148725A2 *

Also Published As

Publication number Publication date
CN101681793A (zh) 2010-03-24
JP2010529604A (ja) 2010-08-26
WO2008148725A3 (fr) 2009-07-09
WO2008148725A2 (fr) 2008-12-11
US20100176728A1 (en) 2010-07-15

Similar Documents

Publication Publication Date Title
EP2151008B1 (fr) Générateur d'impulsions à haute tension et lampe a décharge à haute pression comprenant un tel générateur
WO2007141286A2 (fr) Lampe à décharge à haute pression avec générateur d'impulsions à haute tension et procédé de fabrication d'un générateur d'impulsions à haute tension
DE2201295B2 (de) Anregungsanordnung für optische Sender oder Verstärker
EP2025208B1 (fr) Lampe à décharge à haute pression avec aptitude à l'allumage améliorée et générateur d'impulsions à haute tension
EP2153489B1 (fr) Procédé pour produire un générateur d'impulsions céramique en spirale et générateur d'impulsions céramique en spirale ainsi obtenu
EP1977440B1 (fr) Lampe a decharge haute pression ayant une capacite d'allumage amelioree
EP2153459A2 (fr) Lampe à décharge haute pression à générateur d'impulsions haute tension et procédé de fabrication d'un générateur d'impulsions haute tension
EP2092642B8 (fr) Générateur d'impulsions à haute tension et lampe à décharge à haute pression pourvue d'un tel générateur
EP2025207A1 (fr) Lampe a decharge a haute pression avec capacite d'allumage amelioree ainsi que generateur d'impulsions a haute tension
EP1964157B1 (fr) Generateur d'impulsions haute tension pour une lampe a decharge a haute pression presentant une capacite d'allumage amelioree
EP2116111B1 (fr) Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type
EP2138013B1 (fr) Lampe à lumière mixte
DE3330266A1 (de) Hochdruck-metalldampf-entladungslampe
DE102010001209A1 (de) Hochdruckentladungslampe
DE2428791A1 (de) Vorwiderstand fuer kraftfahrzeuge

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: 20090923

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17Q First examination report despatched

Effective date: 20111011

DAX Request for extension of the european patent (deleted)
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: 20120424