WO2012021034A2 - Dispositif de détection de l'épaisseur d'un conducteur en utilisant un double noyau - Google Patents

Dispositif de détection de l'épaisseur d'un conducteur en utilisant un double noyau Download PDF

Info

Publication number
WO2012021034A2
WO2012021034A2 PCT/KR2011/005962 KR2011005962W WO2012021034A2 WO 2012021034 A2 WO2012021034 A2 WO 2012021034A2 KR 2011005962 W KR2011005962 W KR 2011005962W WO 2012021034 A2 WO2012021034 A2 WO 2012021034A2
Authority
WO
WIPO (PCT)
Prior art keywords
core
probe
double core
insulator
hall sensor
Prior art date
Application number
PCT/KR2011/005962
Other languages
English (en)
Korean (ko)
Other versions
WO2012021034A3 (fr
Inventor
박덕근
정용무
김흥회
Original Assignee
한국원자력연구원
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 한국원자력연구원 filed Critical 한국원자력연구원
Publication of WO2012021034A2 publication Critical patent/WO2012021034A2/fr
Publication of WO2012021034A3 publication Critical patent/WO2012021034A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/04—Corrosion probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • G01N27/902—Arrangements for scanning by moving the sensors

Definitions

  • the present invention provides a conductor thickness flaw detector, which doubles the core of a probe portion, thereby increasing the sensitivity of the flaw detector by increasing the sensitivity of the flaw detector without increasing the size of the core and at the low current. Concerning conductor thickness flaw detectors.
  • the insulation must be dismantled in order to inspect the pipe for damage due to corrosion or reduction in thickness of the pipe underneath the insulation.
  • the present invention was devised to solve the above problems, and by double the core of the probe part, the strength of the flaw detector can be obtained without increasing the size of the core and obtaining the intensity of the magnetic field even at a low current.
  • Using double core with increased The object is to provide a conductor thickness flaw detector.
  • the conductor thickness flaw detection apparatus using the heavy core according to the preferred embodiment of the present invention, the non-destructive inspection of the thickness change (thinning) by the corrosion or corrosion of the pipe covered with the insulator And using the eddy currents through the differential probe with double cores to evaluate the loss of the piping outside of the insulator without dismantling the insulator.
  • the probe portion, the eddy current is a fill eddy current
  • a hall sensor, a GMR (Giant Magnetic Resistance) sensor, or a coil sensor is installed between the cores in the double core.
  • a probe having a dual core, a drive coil, and a differential Hall sensor;
  • a pillar generation unit connected to the probe unit to generate a broadband pillar voltage applied to the driving coil;
  • An amplifier connected to the probe part to amplify a measurement signal induced by the flow sensor;
  • An A / D converter connected to the amplifier to convert the measurement signal into a digital signal;
  • a control unit configured to store and display the digital signal while controlling the probe unit, the pillar generation unit, the medium width unit, and the A / D conversion unit.
  • the probe portion the double core consisting of two cores spaced apart from each other; And the driving coils respectively wound around the core
  • the hall sensor includes: a first hall sensor mounted on a core on an upper joint member connecting upper portions of the two driving coils; and a lower portion of the two driving coils. It is preferred that the teeth are toothed with a second Hall sensor mounted in the center on the lower joint member.
  • the core is preferably made of a magnetic permeability magnetic material.
  • the pulse generator generates a square pulse having a pulse width of 20 ysec or more.
  • the pillar generating unit adjusts the pillar width from lOysec to 1 msec and the frequency of generation from 100 Hz to 1 kHz.
  • the amplifying unit preferably includes a differential amplifying circuit electrically connected to the hall sensor of the probe unit.
  • the conductor thickness flaw detection apparatus using a distillation core according to the present invention does not disassemble the insulator by a non-destructive test without changing the thickness caused by the corrosion or corrosion of the pipe covered with the insulator, Through the fill eddy current has the effect of evaluating the loss of the pipe from the outside of the insulator.
  • FIG. 1 is a graph illustrating a calculation of the shape of a single core and the intensity of a magnetic flux generated by the single core.
  • FIG. 2 is a graph showing the calculation of the shape of the double core and the intensity of the magnetic flux made by the middle core.
  • FIG. 3 is a view showing a pipe thinning inspection device using a double core according to a preferred embodiment of the present invention.
  • Figure 4 is a schematic diagram showing the shape of the probe portion for detecting a thickness change in the insulator on the object to be covered with the insulator in the pipe thinning inspection device using a double core according to an embodiment of the present invention.
  • FIG. 5 is a differential diagram from the voltage induced in a differential Hall sensor when a pulse voltage generated from a pulls generator is applied to a driving coil surrounding a diversion core in the pipe thinning flaw detector using the dual core of FIG. 4. Graph showing the signal.
  • FIG. 6 is a graph showing a signal change of a Hall sensor induced in a test piece according to a change in pulse width in the pipe thinning inspection device using the distillation core of FIG. 4.
  • FIG. 7 illustrates the variation of the differential signal voltage according to the thickness change of the test piece as the thickness of the insulator changes in the single-core pipe thinning flaw detector.
  • FIG. 8 illustrates a change in the differential signal voltage according to the change in thickness of the test piece as the thickness of the insulator changes in the pipe thinning inspection device using the double core of FIG.
  • FIG. 9 is a computer screen showing an operation and a flaw detection result of the pipe thinning flaw detector using the double core of FIG. 4. ⁇ 39>
  • the thickness change (decrease) caused by the corrosion or corrosion of the pipe covered with the insulator is not dismantled by non-destructive inspection, and the eddy current is used through the differential probe part having the double cores. Characterized in that configured to evaluate the loss of the pipe from the outside.
  • FIG. 1 is a graph showing the shape of a single core and the strength of the magnetic flux produced by a single core
  • FIG. 2 is a graph showing the shape of the double core and the strength of a magnetic flux produced by the double core. to be .
  • the calculation conditions are the same, and the applied current and the number of windings of the driving coil 40 are equal to 1A and 150 turns, respectively.
  • the maximum magnetic flux is at the center of the core, and when the hall sensor for defect detection is at the center of the core, the hall sensor has the induced magnetic flux by the driving coil rather than the change of magnetic flux due to the defect. It is much larger so it is harder to detect defects.
  • the maximum magnetic flux is in the core of each core, and the magnetic flux in the place where the defect detection hall sensor 61K62 is located is very small so that the magnetic flux change due to the defect signal can be easily detected. Can be.
  • FIG 3 is a view showing a pipe thinning inspection device using a distillation core according to a preferred embodiment of the present invention
  • Figure 4 is an insulator in a pipe thinning inspection device using a double core according to a preferred embodiment of the present invention. Schematic diagram showing the shape of the probe to detect the thickness change inside the insulator on the covered object.
  • a probe part for detecting the thickness of the conductor 1 in contact with the conductor 1 to be detected a pulse generator, an amplification part configured to be electrically connected to the probe part, An A / D converter, and a control unit.
  • the probe portion has a dual core 20, a drive coil 40, and a differential Hall sensor.
  • the probe part includes a double core 20 formed of two cores spaced apart from each other, a driving coil 40 wound around the core, and a hall sensor disposed between the two driving coils 40. 61K62).
  • the Hall sensor 61K62 is a first Hall sensor between the two drive coils (40)
  • the first hall sensor 61 is an upper joint member connecting the upper portions of the two driving coils 40.
  • the second Hall sensor 62 is mounted in the center on the lower joint member 52 connecting the lower portion of the two drive coils (40).
  • the core is preferably made of a high permeability magnetic material.
  • This probe part is mounted on the insulator (2) surrounding the conductor (1) to perform a measurement operation.
  • the pillar generating unit is connected to the probe unit to generate a broadband pillar current applied to the driving coil 40.
  • This pillar generating unit generates a square pulse having a pillar width of 20 ⁇ sec or more, adjusts the pillar width from 10 ⁇ sec to 1 msec, and adjusts the frequency of occurrence from 100 Hz to 1 kHz. .
  • the differential amplifier unit is connected to the probe portion and the two Hall sensors
  • (61) configured to amplify the measurement signal induced in (62).
  • This amplification circuit amplifies the difference between the output voltages of the Hall sensors 61 and 62 applied to the two input terminals. If both input voltages contain in-phase input signals in the in-phase input voltage, the in-phase component on the output side is removed.
  • the A / D conversion unit is connected to the amplifier unit is configured to convert the measurement signal into a digital signal.
  • control unit controls the above-described probe unit, pillar generation unit, amplification unit, and A / D conversion unit, and stores the digital signal converted by the A / D conversion unit and utilizes the display means. Is configured to display.
  • control unit is dedicated for manipulating the components using Lab-View. Windows programs can be utilized.
  • Figure 1 is a graph showing the shape of a single core and the strength of the magnetic flux produced by the single core
  • Figure 2 is a graph showing the shape of the double core and the strength of the magnetic flux generated by the double core to be.
  • the calculation conditions are the same, and the number of times of applying the applied current and the driving coil 40 is equal to 1A and 150 turns, respectively.
  • the maximum magnetic flux is at the core depth, and when the hall sensor for defect detection is located at the center of the core, the hall sensor has the induced magnetic flux by the driving coil rather than the magnetic flux change due to the defect. It is much larger, making it harder to detect defects.
  • the maximum magnetic flux is located at the center of each core, and the magnetic flux at the place where the defect detection hall sensors 61 and 62 are located is very small so that the magnetic flux can be easily changed by the defect signal. Can be detected.
  • FIG 3 is a view showing a pipe thinning inspection device using a double core according to a preferred embodiment of the present invention
  • Figure 4 is an insulator in a pipe thinning inspection device using a double core according to a preferred embodiment of the present invention
  • This is a schematic diagram showing the shape of the tube to detect the thickness change inside the insulator on the sensing object covered with.
  • a probe part for detecting the thickness of the conductor 1 in contact with the conductor 1 to be detected a pulse generator, an amplifier part configured to be electrically connected to the probe part, An A / D converter, and a control unit.
  • the PTU part has a double core 20, a drive coil 40, and a differential Hall sensor. (61) (62).
  • the probe part may include a dip core 20 including two cores spaced apart from each other, a driving coil 40 wound around each of the cores, and a hall sensor 61 disposed between the two driving coils 40. (62).
  • the Hall sensors 61 and 62 are the first Hall sensors between the two drive coils 40.
  • the first Hall sensor 61 is an upper joint member connecting the upper portions of the two driving coils 40.
  • the second Hall sensor 62 is mounted at the center on the lower joint member 52 connecting the lower portions of the two drive coils 40.
  • the core is preferably made of a high permeability magnetic material.
  • This probe part is mounted on the insulator (2) surrounding the conductor (1) to perform the measurement.
  • the pulse generator is connected to the probe part to generate a wideband pulse current applied to the driving coil 40.
  • These pulse generators generate a square pulse with a fill width of 20 ⁇ sec or more, adjust the spread width from 10 y sec to 1 msec, and control the frequency of occurrence from 100 Hz to 1 kHz. do.
  • the differential amplifier unit is connected to the probe portion and the two Hall sensors
  • This amplification circuit is a circuit for amplifying the difference between the output voltages of the Hall sensors 61 and 62 applied to the two input terminals. If both input voltages contain in-phase input signals in the in-phase input voltage, the in-phase component on the output side is removed.
  • the A / D conversion unit is connected to the amplifying unit to convert the measurement signal into a digital signal.
  • control unit controls the above-described probe unit, pillar generation unit, amplification unit, and A / D conversion unit, and stores the digital signal converted by the A / D conversion unit and displays the display unit. Is configured to display. At this time, the control unit is dedicated for manipulating the components using Lab-View.
  • FIG. 5 illustrates a voltage and a differential signal induced in a differential Hall sensor when a pulse voltage generated from a pillar generating unit is applied to a driving coil surrounding a double core in the pipe thinning inspection device using the double core of FIG. 4.
  • 6 is a graph showing a signal change of the Hall sensor induced in the test piece according to the change in the fill width in the pipe thinning inspection device using the double core of FIG.
  • Figure 7 shows a change in the differential signal voltage according to the thickness change of the test piece as the thickness of the insulator, in the pipe thinning flaw detection apparatus consisting of a single core
  • Figure 8 is a double core
  • the differential signal voltage is shown as the thickness of the test specimen changes as the thickness of the insulator changes.
  • the pulse eddy current test method can be applied to thicker test specimens, so that the restriction of the test specimen is relatively small in the case of the differential probe portion. .
  • FIG. 9 is a computer screen illustrating an operation and a flaw detection result of a pipe thinning flaw detector using the double core of FIG. 4.
  • the upper figure shows the signal induced from the differential Hall sensor.
  • the middle figure shows the signal strength according to the thickness of the test piece so that the thickness difference of the test piece can be visually checked.
  • the lower figure shows the signal processing depending on the thickness of the specimen so that the color change can be confirmed.
  • Eddy current flaw detection when the flow of eddy current is affected by blistering, etc., disturbs or changes the direction of eddy current, and the magnetic field of eddy current changes and affects the test coil magnetic field.
  • the stronger the eddy current the stronger the system to detect discontinuities.
  • the resulting eddy currents are concentrated by the skin effect near the surface of the circumference of the coil.
  • the eddy current concentrates on the surface root as the frequency increases, and decreases as it goes deeper.
  • the penetration depth of the eddy current is given by the following equation.
  • f is the frequency ( ⁇ )
  • ⁇ is the conductivity
  • ⁇ is the penetration depth (m)
  • ⁇ is the permeability (H / m).
  • the frequency is treated twice as the fill width, so the penetration depth increases as the fill width increases.
  • the fill width is about 25 times larger than that of the single probe portion, and the penetration depth of the eddy current in the differential probe portion is increased by five times compared to that of the single probe portion.
  • the hall sensor of the probe part of the present invention has an advantage of being easy to manufacture in various forms, easy to apply in the field, and appropriately adjust the reception sensitivity.
  • a thickness change due to corrosion or corrosion of a pipe covered with an insulator without dismantling the insulator by a non-destructive test, using a pulsed eddy current through a differential probe section having a double core at the outside of the insulator Since the loss of the pipe can be evaluated, it can be used more effectively in the field of conductor thickness flaw detector.

Landscapes

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

La présente invention concerne un dispositif de détection de l'amincissement d'un conduit en utilisant un double noyau qui est conçu de manière à évaluer la corrosion ou les changements d'épaisseur (amincissements) provoqués par la corrosion d'un conduit qui est recouvert d'un isolateur, c'est-à-dire les pertes dans le conduit, depuis l'extérieur de l'isolateur en utilisant des courants parasites de Foucault au moyen d'une sonde différentielle munie d'un double noyau sans démonter l'isolateur au cours d'un essai non destructif. Plus précisément, la présente invention comprend : une unité à sonde ayant un double noyau, une bobine d'entraînement et un capteur à effet Hall différentiel ; une unité génératrice d'impulsions qui est connectée à l'unité à sonde et génère une tension impulsionnelle à large bande qui est appliquée à la bobine d'entraînement ; une unité d'amplification qui est connectée à l'unité à sonde et amplifie un signal de mesure induit dans le capteur à effet Hall ; une unité de conversion A/N qui est connectée à l'unité d'amplification et convertit le signal de mesure en un signal numérique ; et une unité de commande qui est adaptée pour commander l'unité à sonde, l'unité génératrice d'impulsions, l'unité d'amplification et l'unité de conversion A/N tout en stockant et affichant le signal numérique.
PCT/KR2011/005962 2010-08-12 2011-08-12 Dispositif de détection de l'épaisseur d'un conducteur en utilisant un double noyau WO2012021034A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100077752A KR101254300B1 (ko) 2010-08-12 2010-08-12 이중코아를 이용한 도체두께 탐상장치
KR10-2010-0077752 2010-08-12

Publications (2)

Publication Number Publication Date
WO2012021034A2 true WO2012021034A2 (fr) 2012-02-16
WO2012021034A3 WO2012021034A3 (fr) 2012-05-10

Family

ID=45568078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/005962 WO2012021034A2 (fr) 2010-08-12 2011-08-12 Dispositif de détection de l'épaisseur d'un conducteur en utilisant un double noyau

Country Status (2)

Country Link
KR (1) KR101254300B1 (fr)
WO (1) WO2012021034A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108709488A (zh) * 2018-03-29 2018-10-26 清华大学 用于金属膜厚测量的多量程双探头装置
CN108961223A (zh) * 2018-06-20 2018-12-07 西安交通大学 一种介电功能梯度绝缘双模态无损检测方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101601204B1 (ko) * 2014-06-20 2016-03-09 한국원자력연구원 펄스와전류 탐촉자를 이용한 감육탐지 장치 및 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332048A2 (fr) * 1988-03-11 1989-09-13 Westinghouse Electric Corporation Sonde à courants de Foucault à bobines multiples et méthode pour la détection de défauts
EP0819944A1 (fr) * 1996-07-16 1998-01-21 Lucent Technologies Inc. Capteur à courant de foucault
JP2001141698A (ja) * 1999-11-09 2001-05-25 Cosmo Oil Co Ltd 水素脆化判定方法
KR20010045270A (ko) * 1999-11-04 2001-06-05 김덕중 지하매설 상수도 배관의 누수 부위 탐지방법 및 그 장치
JP2003270214A (ja) * 2002-03-15 2003-09-25 ▲高▼木 敏行 渦電流探傷法及び探傷プローブ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332048A2 (fr) * 1988-03-11 1989-09-13 Westinghouse Electric Corporation Sonde à courants de Foucault à bobines multiples et méthode pour la détection de défauts
EP0819944A1 (fr) * 1996-07-16 1998-01-21 Lucent Technologies Inc. Capteur à courant de foucault
KR20010045270A (ko) * 1999-11-04 2001-06-05 김덕중 지하매설 상수도 배관의 누수 부위 탐지방법 및 그 장치
JP2001141698A (ja) * 1999-11-09 2001-05-25 Cosmo Oil Co Ltd 水素脆化判定方法
JP2003270214A (ja) * 2002-03-15 2003-09-25 ▲高▼木 敏行 渦電流探傷法及び探傷プローブ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108709488A (zh) * 2018-03-29 2018-10-26 清华大学 用于金属膜厚测量的多量程双探头装置
CN108709488B (zh) * 2018-03-29 2020-08-07 清华大学 用于金属膜厚测量的多量程双探头装置
CN108961223A (zh) * 2018-06-20 2018-12-07 西安交通大学 一种介电功能梯度绝缘双模态无损检测方法
CN108961223B (zh) * 2018-06-20 2020-08-18 西安交通大学 一种介电功能梯度绝缘双模态无损检测方法

Also Published As

Publication number Publication date
KR101254300B1 (ko) 2013-04-12
KR20120015566A (ko) 2012-02-22
WO2012021034A3 (fr) 2012-05-10

Similar Documents

Publication Publication Date Title
Angani et al. The pulsed eddy current differential probe to detect a thickness variation in an insulated stainless steel
JP4756409B1 (ja) 交番磁場を利用した非破壊検査装置および非破壊検査方法
KR101150486B1 (ko) 펄스유도자속을 이용한 배관감육 탐상장치 및 탐상방법
WO2008072508A1 (fr) Instrument d'essai non destructif et procédé d'essai non destructif
JP6242155B2 (ja) 非破壊検査装置および非破壊検査方法
KR101746072B1 (ko) 강자성체 증기발생기 튜브의 비파괴 검사장치 및 그 방법
WO2012021034A2 (fr) Dispositif de détection de l'épaisseur d'un conducteur en utilisant un double noyau
Dmitriev et al. Application of an eddy-current method to measure electrical conductivity of thin films
CN112945427A (zh) 利用巴克豪森效应测量焊缝处二维应力的方法及检测仪器
KR101339117B1 (ko) 펄스와전류를 이용한 이면 결함 탐지 장치 및 방법
JP6378554B2 (ja) 非破壊検査装置および非破壊検査方法
KR101988887B1 (ko) 자기 센서 배열을 이용한 리사주선도 도시 장치
KR101158411B1 (ko) 펄스 와전류를 이용한 도체두께 탐상장치
KR100626228B1 (ko) 교류자기장을 이용한 유도자속 탐상장치 및 그 방법
Singh et al. Thickness evaluation of aluminium plate using pulsed eddy current technique
EP1877767A2 (fr) Sondes de test electromagnetiques a champ prochetm et a champ mixte : champ prochetm - champ eloigne, utiles pour inspecter des tuyaux et des tubes ferromagnetiques tels que ceux utilises dans les echangeurs de chaleur
KR100934615B1 (ko) 와전류 검사 장치 및 방법
Angani et al. Dual core differential pulsed eddy current probe to detect the wall thickness variation in an insulated stainless steel pipe
JP5011056B2 (ja) 渦流検査プローブ及び渦流検査装置
JPH05203629A (ja) 電磁気探傷方法およびその装置
KR101173760B1 (ko) 미세 와전류 신호 검출방법
KR101138359B1 (ko) 경사진 전자기장을 발생시키는 비파괴 검사 장치
KR101250559B1 (ko) 누설자속 측정에 의한 압력용기의 비파괴 탐상장치
JPS6021445A (ja) 渦電流検査装置
KR101568127B1 (ko) 보일러 튜브의 용접부위 검사장치 및 이를 이용한 검사방법

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: 11816650

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase in:

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 31.05.2013)

122 Ep: pct application non-entry in european phase

Ref document number: 11816650

Country of ref document: EP

Kind code of ref document: A2