WO2010142911A1 - Banc et procédé de contrôle par magnétoscopie d'un arbre de turbomachine - Google Patents
Banc et procédé de contrôle par magnétoscopie d'un arbre de turbomachine Download PDFInfo
- Publication number
- WO2010142911A1 WO2010142911A1 PCT/FR2010/051138 FR2010051138W WO2010142911A1 WO 2010142911 A1 WO2010142911 A1 WO 2010142911A1 FR 2010051138 W FR2010051138 W FR 2010051138W WO 2010142911 A1 WO2010142911 A1 WO 2010142911A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- workpiece
- shaft
- endoscopy
- bench
- Prior art date
Links
Classifications
-
- 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
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
Definitions
- the present invention relates to a bench and a method of magnetic particle inspection of a tubular piece such as a turbomachine shaft.
- Magnetic particle (MT) is a non destructive testing technique
- CND CND for detecting defects on the surface of a part made of ferromagnetic material or inside this material.
- This technique consists in spraying a product containing colored particles or ferromagnetic particles coated with a fluorescent pigment on the surface of the part to be controlled, then subjecting this part to a magnetic field while observing by endoscopy and under white light illumination. or ultraviolet light the surface treated with the product.
- Low-pressure turbine shafts and low-pressure turbomachine shafts must be inspected by magnetoscopy after fabrication to detect possible metallurgical defects such as inclusions or machining cracks, and during maintenance operations for detect any operating cracks. These trees are tubular and their inner and outer surfaces must be magnetically controlled in their entirety.
- the observation under ultraviolet illumination of the internal cylindrical surface of a turbomachine shaft is carried out by means of a rod which is intended to be engaged in the shaft by one of its ends, and which leads to its distal end a source of ultraviolet light and an inclined mirror for returning images to a CCD camera located at the proximal end of the cane.
- the cane is equipped with relatively complex and bulky equipment.
- the ultraviolet light source is formed by neon lamps which do not allow to illuminate homogeneously the inner surface of the tree, and which emit light whose wavelength is difficult to control, which does not allow to have good conditions of observation.
- the mirror because of its size and shape, returns images of small size, which makes it difficult to detect defects.
- the rod is moved in translation within the shaft at the same time as the latter is rotated about its axis, which causes a helical sweep of the inner surface of the shaft by the task d lighting defined by the means of endoscopy, and results in a deformation of the images recorded by the camera. In this case, it is also difficult to obtain sufficient coverage of the inspected surfaces and to ensure that the entire internal surface of the tree has been controlled.
- the invention aims in particular to provide a simple, effective and economical solution to these problems.
- a magnetoscopic test bench for a tubular part such as a turbomachine shaft, comprising means for supporting and rotating the workpiece, an elongated tool carrying endoscopy means.
- ultraviolet illumination for illuminating the internal surface of the workpiece and observing any defects in the workpiece, and means for supporting and guiding the tool in translation for insertion into the workpiece, characterized in that the tool comprises a plurality of external marks regularly distributed over at least a part of its length and defining regular steps of advance in translation of the tool along the longitudinal axis of the workpiece, the means supporting and guiding the tool comprising indexing means cooperating by snapping with the reference marks of the tool to accurately control the advance and position of the tool in the workpiece.
- the external references of the support tool of the endoscopy means make it possible to accurately determine the position of the tool in the part to be inspected and thus of the area of the part being observed at the end.
- help endoscopy means These marks distributed along the tool define regular steps in advance increment of the tool in translation inside the room.
- the tool is intended to be wedged in an axial position in the workpiece while the workpiece is rotated about its axis. This makes it possible to scan an internal annular zone of the part with the task of illuminating the means of endoscopy of the tool. Once this annular zone is fully inspected, the tool is moved forward or backward one step in the workpiece to inspect a new annular zone which at least partially overlaps the aforementioned annular zone.
- the tool according to the invention is therefore intended to be moved step by step inside the part to be checked.
- the fact of not rotating the part to be controlled at the same time as the tool is moved limits the deformations of the images captured by the means of endoscopy of the tool.
- the tool according to the invention can be manipulated by hand by a person or in an automated manner.
- the outer marks of the tool may be annular markers extending around the longitudinal axis of the tool. They are formed by affixing annular marks or forming annular grooves on the outer surface of the tool. The distance between two marks may be about 1 cm.
- the tool according to the invention can have a generally cylindrical shape, and is advantageously tubular, the endoscopy means being housed and extending inside the tool. This makes it possible to protect the means of endoscopy and to limit the size of the tool. In addition, this tool is rigid and prevents bending and vibration of the endoscopic means in use.
- These endoscopy means may comprise ultraviolet light guiding means and image transmission means, which extend from the proximal end of the tool to its distal end, and protrudes axially from this distal end.
- the image transmission means comprise at their distal end at least one prism.
- This prism guarantees the transmission of good quality images.
- each step in advance of the tool has a dimension equal to or smaller than the diameter of the field of view of the endoscopy means.
- each step has a dimension substantially equal to half the diameter of the field of view of the endoscopy means.
- the bench according to the invention may comprise support and guide means at each end of the workpiece for the insertion of the tool into the workpiece by one or the other of its ends.
- the tool is engaged in the piece by one of its ends then by the other of its ends, so as to inspect the entire internal surface of the piece .
- the means for supporting and guiding the tool comprise indexing means co-operating by snapping with the external marks of the tool to accurately control the advance and position of the tool in the workpiece.
- the invention finally relates to a method of non-destructive inspection by magnetic particle of a tubular piece by means of the bench as described above, characterized in that it comprises the steps of: a) inserting the tool into the workpiece to be controlled by one of its ends, until it has a desired position in this part, this position being defined by the indexing means of the cooperating snap-fitting bench with one of the reference points of the tool, b) immobilize the tool and turn the workpiece about its axis to inspect an inner annular area of the workpiece using the means of endoscopy of the tool, c) then moving the tool inside the workpiece one step in a longitudinal direction until the indexing means snap-engage with another adjacent tool mark, and d) repeat steps b) and c), until the piece has been controlled to a desired length.
- the method also includes repeating steps a), b), c) and d) by inserting the tool into the other end of the workpiece.
- the method according to the invention may further consist in controlling each piece twice, the piece being subjected to a longitudinal magnetic field during the first control and to a transverse magnetic field during the second control.
- the detection of defects in the workpiece is optimal when the field lines of the magnetic field are perpendicular to these defects.
- the application of a longitudinal magnetic field to the workpiece makes it possible to detect the defects of this workpiece having a substantially circumferential orientation while the application of a transverse magnetic field to the workpiece makes it possible to detect the defects of this workpiece having an orientation substantially axial.
- FIGS. 1 and 2 are schematic views of a magnetic non-destructive test bench according to the invention, and represent two steps of the control method according to the invention, and
- FIGS. 3 and 4 are partial schematic perspective views of the tool according to the invention for the magnetic particle inspection of a tubular piece.
- FIG. 1 shows a magnetic non-destructive inspection (CND) bench 10 of a tubular part which is in the example shown a turbomachine shaft 12, and in particular a low-pressure turbine shaft or a low-pressure turbine engine compressor.
- CND magnetic non-destructive inspection
- This shaft 12 has a generally cylindrical and elongate shape with a longitudinal axis A and is made of a ferromagnetic material.
- the internal and external cylindrical surfaces of the shaft 12 must be controlled by magnetoscopy after the manufacture of this shaft or during maintenance operations of the turbomachine, to detect the presence of possible defects in the ferromagnetic material of the shaft .
- Magnetic particle control of the inner surface of the shaft 12 is essentially accomplished in two steps: a first step in which a product containing ferromagnetic particles coated with a fluorescent pigment is sprayed onto the inner surface of the shaft, and a second step in which the shaft is subjected to a magnetic field and a tool 14 carrying endoscopy means is engaged inside the shaft for visual inspection under ultraviolet light of its inner surface treated with the above product .
- the control bench 10 comprises means 16 for supporting and rotating the shaft 12 about its axis A, a tool 14 for non-destructive inspection by magnetic particle of the aforementioned type, means 18 for supporting and guiding in translation. of this tool inside the shaft 12, and generators 20 of magnetic field.
- the shaft 12 is held at each of its ends by the support means 16 which are fixed to the ground 22. These support means 16 allow rotation of the shaft 12 about its axis A (arrow 24).
- Tool support means 14 are arranged at each end of the shaft 12 so that the tool can be engaged and guided in one or the other end of the shaft, as this is visible in Figures 1 and 2.
- These support means 18 comprise for example rollers 26 for guiding the tool in axial translation inside the shaft in a horizontal plane.
- the magnetic field generators 20 are able to apply a magnetic field to the shaft 12 in a longitudinal direction (arrows 28) and / or in a transverse direction (arrows 30).
- the tool 14 comprises endoscopy means housed inside a tubular cylindrical body on the outer surface of which are formed pins 32 defining regular steps in advance of translation of the tool along of the axis A of the tree.
- these marks 32 are formed by external annular markings or external annular grooves extending around the longitudinal axis of the tool ( Figures 1 to 3). These marks 32 are formed over a major part of the length of the body of the tool.
- the means 18 for supporting the tool 14 are equipped with indexing means 34 cooperating with the pins 32 of the tool to accurately control and determine the axial position of the tool in the shaft 12.
- indexing means 34 cooperating with the pins 32 of the tool to accurately control and determine the axial position of the tool in the shaft 12.
- these ball-type indexing means for example, cooperate by snapping with the annular grooves 32 of the tool to lock it in an axial position with respect to the shaft 12.
- the endoscopic means carried by the tool 14 comprise means 36 for image transmission and means 38 for guiding ultraviolet light, which extend axially in the body of the tool.
- the image transmission means 36 protrude axially from the distal end of the body of the tool (FIG. 4) and comprise at this end at least one image transfer prism 40 towards a series of lenses or the like housed in the body. body of the tool.
- the images are for example captured by a camera located at the proximal end of the tool to then be viewed on a control screen.
- the image transmission means 36 comprise at their proximal end an eyepiece.
- the light guiding means 38 is connected to the proximal end of the tool at a source of ultraviolet light and protrudes axially at their opposite end of the distal end of the body of the tool.
- the endoscopic means are of the deflected distal view type, that is to say that the observation axis defined by the prism of the image transmission means 36 is oriented laterally, substantially perpendicular to the longitudinal axis. of the tool, and the line of sight defined by the distal end of the light guiding means 38 is substantially parallel to this axis of sight.
- the image transmission and light guiding means 36, 38 are further connected at their proximal ends to a data processing and control unit 42.
- the task of lighting defined by the means of illumination endoscopic means has a generally circular shape.
- the tool 14 is intended to be engaged in the shaft by one of its ends ( Figure 1) and to be locked in a given axial position in the shaft using the indexing means 34.
- the tool is fixedly held by the support means 18 and the shaft 12 is rotated about its axis A by the support means 16 (arrow 24), so that the task of illuminating the endoscopy means of the tool scans an inner annular surface of the tool.
- the tool is then moved in translation by one step forward or backward in the shaft (arrow 42) and is again immobilized by the indexing means 34 of the support means 18.
- the rotation of the shaft 12 causes the illumination task to scan the endoscopy means of a new inner annular surface of the shaft which at least partially covers the annular surface previously inspected.
- the tool 14 is thus advanced or retreated step by step inside the shaft and fixedly maintained after each of these movements and during the rotation of the shaft 12.
- each annular surface inspected by the lighting task covers one half of each annular surfaces inspected adjacent, allowing the entire surface of the tree to be fully inspected twice.
- the shaft 12 to be controlled has a large length and its inner surface can not be controlled in its entirety by engagement of the tool via only one of its ends
- the tool is engaged once in the shaft by one of its ends to control a first half of its inner surface (Figure 1) and is then engaged again in the shaft by its other end to control the second half of its inner surface ( Figure 2).
- the aforementioned steps of the method according to the invention shown in FIGS. 1 and 2 are carried out by subjecting the shaft to a magnetic field in the longitudinal direction (arrows 28) to detect the defects with a substantially circumferential orientation of the shaft, then these steps are repeated by subjecting the shaft to a transverse magnetic field (arrows 30) to detect substantially axially oriented defects of the shaft.
- the movement of the tool 14 and the rotation of the shaft 12 can be provided manually or automatically.
- the shaft 12 may have a length of about 1.8 to 2 meters and the tool 14 may have a length of about 1.8 meters.
- This tool 14 may have in section a circular, square, polygonal or any shape.
- the size of the steps defined by the external marks 32 of the tool may be about 10 mm.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Endoscopes (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/377,019 US8872512B2 (en) | 2009-06-10 | 2010-06-08 | Bench and a method for magnetoscopically testing a turbine engine shaft |
EP10737969.5A EP2440912B1 (fr) | 2009-06-10 | 2010-06-08 | Banc et procédé de contrôle par magnétoscopie d'un arbre de turbomachine |
CA2762833A CA2762833C (fr) | 2009-06-10 | 2010-06-08 | Banc et procede de controle par magnetoscopie d'un arbre de turbomachine |
CN201080026177.9A CN102460141B (zh) | 2009-06-10 | 2010-06-08 | 采用磁粉探伤对涡轮发动机轴进行测试的试验台和方法 |
RU2011154338/28A RU2528856C2 (ru) | 2009-06-10 | 2010-06-08 | Стенд и способ контроля посредством магнитной дефектоскопии вала газотурбинного двигателя |
BRPI1013044-6A BRPI1013044B1 (pt) | 2009-06-10 | 2010-06-08 | Equipamento de controle por magnetoscopia de uma peça tubular, tal como uma árvore de turbomáquina, e, processo de controle por magnetoscopia de uma peça tubular |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0902815A FR2946752B1 (fr) | 2009-06-10 | 2009-06-10 | Dispositif et procede de controle par magnetoscopie d'un arbre de turbomachine |
FR09/02815 | 2009-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010142911A1 true WO2010142911A1 (fr) | 2010-12-16 |
Family
ID=41528520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/051138 WO2010142911A1 (fr) | 2009-06-10 | 2010-06-08 | Banc et procédé de contrôle par magnétoscopie d'un arbre de turbomachine |
Country Status (8)
Country | Link |
---|---|
US (1) | US8872512B2 (fr) |
EP (1) | EP2440912B1 (fr) |
CN (1) | CN102460141B (fr) |
BR (1) | BRPI1013044B1 (fr) |
CA (1) | CA2762833C (fr) |
FR (1) | FR2946752B1 (fr) |
RU (1) | RU2528856C2 (fr) |
WO (1) | WO2010142911A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8575923B1 (en) | 2011-01-07 | 2013-11-05 | OilPatch Technology | Method and apparatus for special end area inspection |
CN103984951B (zh) * | 2014-04-25 | 2017-12-08 | 西南科技大学 | 一种磁粉检测缺陷自动识别方法及系统 |
FR3099579A1 (fr) | 2019-08-01 | 2021-02-05 | Safran Aircraft Engines | Piece etalon pour le controle par magnetoscopie |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05332995A (ja) * | 1992-05-27 | 1993-12-17 | Kawasaki Steel Corp | 管内面検査装置 |
EP0593357A1 (fr) * | 1992-10-14 | 1994-04-20 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Dispositif support d'une sonde de détection et de localisation de défauts éventuels à l'intérieur d'un alésage |
EP1494060A1 (fr) * | 2003-07-04 | 2005-01-05 | Snecma Moteurs | Dispositif de recherche et de détection de défauts de pieces par endoscopie |
GB2413854A (en) * | 2004-05-07 | 2005-11-09 | Vetco Gray Inc | Internal riser inspection device and methods of use |
FR2920537A1 (fr) * | 2007-08-29 | 2009-03-06 | Commissariat Energie Atomique | Dispositif de prise d'empreintes de defauts surfaciques pour surfaces interieures et tubes et procede associe. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682032A (en) * | 1950-03-08 | 1954-06-22 | Magnaflux Corp | Means and method for inspecting inner surfaces of tubular members |
US3480855A (en) * | 1967-04-10 | 1969-11-25 | Magnaflux Corp | Image dissector system having pattern rotation means |
SU1214984A1 (ru) * | 1984-09-10 | 1986-02-28 | Специальное Конструкторское Бюро "Газприборавтоматика" | Способ определени местоположени дефектов трубопровода |
CN2086903U (zh) * | 1990-11-22 | 1991-10-16 | 吉林市松辽铁道机械厂 | 多功能磁粉探伤机床 |
JPH04332995A (ja) | 1991-05-07 | 1992-11-19 | Sony Corp | 半導体記憶装置 |
RU2069288C1 (ru) * | 1993-12-09 | 1996-11-20 | Малое предприятие "Ультратест" | Дефектоскоп-снаряд для внутритрубного обследования трубопроводов |
US6870616B2 (en) * | 1998-06-30 | 2005-03-22 | Jjl Technologies Llc | Spectrometer apparatus for determining an optical characteristic of an object or material having one or more sensors for determining a physical position or non-color property |
CN100487447C (zh) * | 2004-09-22 | 2009-05-13 | 住友金属工业株式会社 | 磁粉探伤方法以及磁粉探伤装置 |
-
2009
- 2009-06-10 FR FR0902815A patent/FR2946752B1/fr active Active
-
2010
- 2010-06-08 RU RU2011154338/28A patent/RU2528856C2/ru active
- 2010-06-08 CA CA2762833A patent/CA2762833C/fr active Active
- 2010-06-08 US US13/377,019 patent/US8872512B2/en active Active
- 2010-06-08 WO PCT/FR2010/051138 patent/WO2010142911A1/fr active Application Filing
- 2010-06-08 EP EP10737969.5A patent/EP2440912B1/fr active Active
- 2010-06-08 BR BRPI1013044-6A patent/BRPI1013044B1/pt active IP Right Grant
- 2010-06-08 CN CN201080026177.9A patent/CN102460141B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05332995A (ja) * | 1992-05-27 | 1993-12-17 | Kawasaki Steel Corp | 管内面検査装置 |
EP0593357A1 (fr) * | 1992-10-14 | 1994-04-20 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Dispositif support d'une sonde de détection et de localisation de défauts éventuels à l'intérieur d'un alésage |
EP1494060A1 (fr) * | 2003-07-04 | 2005-01-05 | Snecma Moteurs | Dispositif de recherche et de détection de défauts de pieces par endoscopie |
GB2413854A (en) * | 2004-05-07 | 2005-11-09 | Vetco Gray Inc | Internal riser inspection device and methods of use |
FR2920537A1 (fr) * | 2007-08-29 | 2009-03-06 | Commissariat Energie Atomique | Dispositif de prise d'empreintes de defauts surfaciques pour surfaces interieures et tubes et procede associe. |
Also Published As
Publication number | Publication date |
---|---|
US20120086441A1 (en) | 2012-04-12 |
RU2011154338A (ru) | 2013-07-20 |
US8872512B2 (en) | 2014-10-28 |
BRPI1013044A2 (pt) | 2016-04-05 |
RU2528856C2 (ru) | 2014-09-20 |
FR2946752B1 (fr) | 2011-07-29 |
CA2762833C (fr) | 2017-07-18 |
CN102460141A (zh) | 2012-05-16 |
EP2440912A1 (fr) | 2012-04-18 |
CA2762833A1 (fr) | 2010-12-16 |
BRPI1013044B1 (pt) | 2019-10-01 |
FR2946752A1 (fr) | 2010-12-17 |
EP2440912B1 (fr) | 2017-12-13 |
CN102460141B (zh) | 2015-11-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2368105B1 (fr) | Procede de controle non destructif d'une piece mecanique | |
JP6069310B2 (ja) | 円筒部品内面検査のための手法 | |
DE102010032410B4 (de) | Inspektionsvorrichtung, Fertigungsanlage mit Inspektionsvorrichtung und Inspektionsverfahren für Gefäße | |
US7505124B2 (en) | Automated inspection system and method | |
EP2440912B1 (fr) | Banc et procédé de contrôle par magnétoscopie d'un arbre de turbomachine | |
US20170030842A1 (en) | Device and method for optically inspecting and analyzing stent-like objects | |
FR2730058A1 (fr) | Procede de controle non destructif d'une surface, en particulier en milieu hostile | |
JP2007155384A (ja) | 欠陥検査装置及び欠陥検査方法 | |
JP2007285869A (ja) | 表面検査装置及び表面検査方法 | |
FR3099579A1 (fr) | Piece etalon pour le controle par magnetoscopie | |
JP4826437B2 (ja) | 極細で長い円筒状金属線の表面きず検査装置 | |
JP2004205218A (ja) | 内径部外観検査装置及び方法 | |
JP5473856B2 (ja) | 検査装置 | |
FR3081219A1 (fr) | Installation avec un poste de controle du gabarit des pieces produites adapte au controle du support desdites pieces | |
EP3630420B1 (fr) | Procédé de contrôle de la surface d'une pièce par un capteur robotisé | |
JP3599932B2 (ja) | 外観検査装置 | |
JP2005201880A (ja) | 表面欠陥検査装置 | |
FR2920537A1 (fr) | Dispositif de prise d'empreintes de defauts surfaciques pour surfaces interieures et tubes et procede associe. | |
KR100393259B1 (ko) | 표면의 곡률 변화 보상 장치 | |
JP2002277403A (ja) | 水晶基板検査方法及び装置 | |
FR2998661A1 (fr) | Installation de controle optique d'une piece millimetrique | |
DE102010060852A1 (de) | Vorrichtung und Verfahren zur Erfassung einer Oberflächenstruktur einer Oberfläche eines Werkstücks | |
FR2934682A1 (fr) | Systeme d'aide au controle non destructif d'une structure telle que notamment d'un navire |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080026177.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10737969 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2762833 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010737969 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 9572/DELNP/2011 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13377019 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011154338 Country of ref document: RU |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: PI1013044 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: PI1013044 Country of ref document: BR Kind code of ref document: A2 Effective date: 20111209 |