WO2007068338A1 - Verfahren zum stranggiessen dünner metallbänder und stranggiessanlage - Google Patents
Verfahren zum stranggiessen dünner metallbänder und stranggiessanlage Download PDFInfo
- Publication number
- WO2007068338A1 WO2007068338A1 PCT/EP2006/011339 EP2006011339W WO2007068338A1 WO 2007068338 A1 WO2007068338 A1 WO 2007068338A1 EP 2006011339 W EP2006011339 W EP 2006011339W WO 2007068338 A1 WO2007068338 A1 WO 2007068338A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal strip
- continuous casting
- metal
- pairs
- driver
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- the invention relates to a method for continuously casting thin metal strips in a continuous casting plant, in which metal emerges from a mold vertically downwards, wherein the metal strip is bent from the vertical direction in the horizontal direction and wherein the metal strip is supported and / or conveyed by means of a number of drive roller pairs and / or plastically deformed. Furthermore, the invention relates to a continuous casting plant, in particular for carrying out this method.
- a generic method is known from EP 1 071 529 B1 and from WO 2004/065030 A1.
- liquid metal is supplied from above to a mold, from which the preformed metal strip with a still liquid core emerges vertically downwards.
- the tape cools in the direction of promotion and solidifies; it is gradually bent from the vertical direction to the horizontal direction.
- a number of pairs of driver rollers are available to support and promote the metal strip. It can also be provided that the driver roller pairs make a pre-deformation of the metal strip, d. H. the metal band is reduced in thickness. Subsequently, d. H. After passing the pairs of driver rollers, the belt passes into a downstream rolling mill, where the belt is further rolled out.
- CSP refers to a combined casting and rolling process for thin slabs, the thickness of which is usually between 45 and 70 mm, sometimes up to 90 mm, and the requirements for the dimensional accuracy of the geometry and the mechanical properties of the finished hot strip are constantly increasing
- the market demands for hot strip with the lowest possible final thickness increase as well.
- Demands on the control and positioning systems in the finishing train increase significantly at final thicknesses below 1.5 mm.
- a significant influence on the stability of the rolling process has the incoming in the finishing mill slab geometry, in particular the profile and the wedging of the thin slab over the width of the metal strip and their uniformity over the slab length arrives. Sudden changes in the profile or the wedge over the length lead to sudden changes in the flatness state within the finishing train and thus to instabilities in rolling, which in unfavorable case can result in a so-called "high-altitude" with loss of production (casting demolition) immediate quality-determining result of the casting process. According to the prior art, it is only possible to achieve a certain thickness reduction in the area of the pairs of driver rolls by the rolling process between the driver rolls.
- CSP casting machines are equipped with a "Liquid Core Reduction” (LCD) and offer the possibility of changing the wedging of the metal strip or the thin slab via position-controlled hydraulic cylinders
- the profile of the thin slab results from the rigidity of the segments and The deeper the sump tip is in the caster, the greater the ferrostatic pressure and thus, given a constant segment stiffness, the sag of the segments and the resulting thin slab profile
- the slab profile can be negatively influenced by the wear profile of the segmented rollers, which effect can lead to considerable difficulties in the subsequent rolling process ,
- the invention is therefore based on the object to provide a method and an associated continuous casting machine, with which or with which it is possible to overcome the disadvantages mentioned. It is therefore to be ensured that optimum conditions for achieving a high-quality metal band are present in the rolling process following the continuous casting apparatus.
- the solution of this problem by the invention according to the method is characterized in that at least one driver roller pair plastically transforms the metal strip without significant change in the average thickness of the metal strip.
- the at least one driver roller pair at least largely eliminates any existing wedging of the metal strip over its width direction.
- the at least one pair of driver rollers generates a desired cross-sectional profile of the metal strip.
- the transformation without significant change in the average thickness takes place with advantage in the conveying direction of the metal strip seen in the last, in the last two or in the last three pairs of driver rollers. Furthermore, this transformation takes place immediately before or after the bending of the metal strip in the horizontal direction.
- the deformation takes place without significant change in the average thickness in the pairs of driver rollers immediately prior to forming in a downstream rolling mill in the conveying direction of the metal strip.
- the average thickness of the metal strip by means of the last, the last two or the last three pairs of drive rolls at the end of the continuous casting plant is less than 5%, preferably less than 3 % is.
- the proposed continuous casting plant for the continuous casting of thin metal bands with a mold from which can emerge vertically down metal, with means for bending the metal strip from the vertical direction in the horizontal direction and with a number of pairs of drive rollers for supporting, conveying and / or plastic deformation of the Metal strip is inventively characterized by at least one pair of drive rollers for plastic deformation of the metal strip without significant change in the average thickness - as explained above.
- Fig. 1 is a schematic representation of a continuous casting in the side view
- Fig. 2 shows schematically the view of a pair of driver rollers, seen in the conveying direction of the metal strip.
- FIG. 1 shows a continuous casting plant 2 in which a metal strip 1 is produced.
- liquid metal is supplied to an oscillating mold 3 from above.
- the vertically downwards from the mold 3 exiting metal strip. 1 has inside a still liquid core 11, which, viewed in the conveying direction F gradually hardens until the metal strip is completely solid.
- the fürerstarrungstician 14 is indicated in Fig. 1.
- the metal strip 1 is first led vertically downwards by means of a vertical strand guide 12, but then gradually deflected into the horizontal H by a number of rollers, of which only a part is shown. As a result, a pouring arc 13 forms.
- the strip is still so soft that a controlled rolling of the metal strip 1 with pairs of driver rolls 4, 5, 6, 7, 8, 9, 10 is possible.
- Driver roller pairs are well known as such in the prior art and serve for supporting, conveying and rolling the metal strip 1 until it is transferred to the horizontal H and fed to a rolling mill, not shown, located behind the last pair of drive rollers 10 in the conveying direction F followed.
- the proposed idea is basically to provide an actuator after the casting and solidification process of the thin slab, ie the metal strip 1, with which the slab geometry can be influenced.
- This task is to be taken over by the last driver roller pairs 8, 9, 10 of the continuous casting machine, which are located at the delivery end of the continuous casting machine.
- driver roller pairs 8, 9, 10 of the continuous casting machine which are located at the delivery end of the continuous casting machine.
- These are mostly driver roller pairs that act as straighteners, so align the metal band in a flat state.
- shear of the casting machine rule in the normal case constant and low throughput speeds, and set in the last driver roller pair geometry in terms of profile and wedging is not changed until the entry into the finishing mill.
- the last pair of driver rollers or the last pairs of driver rollers 8, 9, 10 - as viewed in the conveying direction F - is or are designed with respect to the pressures and forces such that only a minimal amount of torque is transmitted Thickness reduction of the slab takes place.
- This minimum reduction in thickness results in a corresponding material crossflow (material flow transversely to the direction of conveyance F), as a result of which the slab profile and the slab wedging can be set in a targeted manner.
- FIG. There is shown in solid lines - exaggerated and viewed in the direction of the conveying direction F - the cross section of the metal strip 1 outlined.
- the two rollers 10a and 10b of the last pair of drive rollers 10 acting in the conveying direction F act on the two surfaces of the metal strip 1, which is indicated by the arrows (for reasons of clarity, the rollers 10a, 10b are shown at a distance from the metal strip 1).
- the thickness d of the metal strip 1 is not constant over the width, but it is high profile of the metal strip to recognize that is undesirable and adversely affected the subsequent rolling process in the finishing mill. Therefore, the rollers 10a, 10b are adjusted so that, although no appreciable change in the average thickness d of the metal strip 1 results, but an elimination of the excessive profile overshoot, which is shown by the dashed lines.
- the mean thickness is to be understood as the mean value of all values of the thickness d across the width of the metal strip 1.
- the last driver roller pair 10 (or again the last three pairs of driver roller 8, 9, 10) can be equipped with a roller bending system.
- a roller bending system can keep constant the deflection of the driver rollers depending on the applied rolling force.
- Another possibility of deliberate influence is the provision of a hydraulically employed counter-roller, which presses with different forces against the center of the driver roller depending on the deflection. This ensures that the deflection of the driver rollers can be kept constant.
- the driver rollers can also have a special profiling (CVC contour), and a sliding system would thus also make it possible to keep the profile of the slab constant and, in particular, to eliminate any possibility of slippage.
- CVC contour a profiling
- roller wear is the result.
- One way to limit this wear is to influence the slab geometry only in critical sequences (thin strip rolling). For all noncritical sequences, the mode of operation would not change in comparison to the prior art.
- An additional improvement of the roll wear problem can be achieved by using an online polisher (analogous to the reel driver rolls).
- an online polisher analogous to the reel driver rolls.
- individually engageable segments for example via a rotary or spiral spring or a pneumatic
- the original role contour can be reground steadily. In this way wear edges in the roll contour can be avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002631800A CA2631800A1 (en) | 2005-12-14 | 2006-11-27 | Method for the continuous casting of thin metal strip and continuous casting installation |
BRPI0619864-3A BRPI0619864A2 (pt) | 2005-12-14 | 2006-11-27 | processo para fundição contìnua de tiras de metal finas e instalação de fundição contìnua |
AU2006326711A AU2006326711B2 (en) | 2005-12-14 | 2006-11-27 | Method for the continuous casting of thin metal strip and continuous casting installation |
US12/086,523 US8186422B2 (en) | 2005-12-14 | 2006-11-27 | Method for the continuous casting of thin metal strip and continuous casting installation |
JP2008544793A JP2009519134A (ja) | 2005-12-14 | 2006-11-27 | 薄いストリップを連続鋳造するための方法と連続鋳造装置 |
EP06829136A EP1960136A1 (de) | 2005-12-14 | 2006-11-27 | Verfahren zum stranggiessen dünner metallbänder und stranggiessanlage |
EG2008060946A EG25046A (en) | 2005-12-14 | 2008-06-08 | Method for the continuous casting of thin metal strip and continuous casting installation. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005059692A DE102005059692A1 (de) | 2005-12-14 | 2005-12-14 | Verfahren zum Stranggießen dünner Metallbänder und Stranggießanlage |
DE102005059692.4 | 2005-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007068338A1 true WO2007068338A1 (de) | 2007-06-21 |
Family
ID=38089313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/011339 WO2007068338A1 (de) | 2005-12-14 | 2006-11-27 | Verfahren zum stranggiessen dünner metallbänder und stranggiessanlage |
Country Status (16)
Country | Link |
---|---|
US (1) | US8186422B2 (de) |
EP (1) | EP1960136A1 (de) |
JP (1) | JP2009519134A (de) |
KR (1) | KR20080078650A (de) |
CN (1) | CN101330996A (de) |
AR (1) | AR057241A1 (de) |
AU (1) | AU2006326711B2 (de) |
BR (1) | BRPI0619864A2 (de) |
CA (1) | CA2631800A1 (de) |
DE (1) | DE102005059692A1 (de) |
EG (1) | EG25046A (de) |
RU (1) | RU2383411C2 (de) |
TW (1) | TW200732061A (de) |
UA (1) | UA92049C2 (de) |
WO (1) | WO2007068338A1 (de) |
ZA (1) | ZA200804269B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1917115B2 (de) † | 2005-11-22 | 2018-03-14 | SMS group GmbH | Verfahren und vorrichtung zum anstellen von mindestens einem rollensegment einer strangführungseinrichtung an einen strang |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060137851A1 (en) * | 2004-12-27 | 2006-06-29 | Gyan Jha | Shaped direct chill aluminum ingot |
US8381385B2 (en) * | 2004-12-27 | 2013-02-26 | Tri-Arrows Aluminum Inc. | Shaped direct chill aluminum ingot |
JP5373728B2 (ja) | 2010-09-17 | 2013-12-18 | 株式会社豊田中央研究所 | 自由鋳造方法、自由鋳造装置および鋳物 |
RU2466808C1 (ru) * | 2011-06-24 | 2012-11-20 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Литейно-прокатный агрегат для производства листовой холоднокатаной продукции из алюминия и его сплавов |
RU2466807C1 (ru) * | 2011-06-24 | 2012-11-20 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Литейно-прокатный агрегат для производства листовой горячекатаной продукции из алюминия и его сплавов |
KR101736574B1 (ko) | 2015-06-04 | 2017-05-17 | 주식회사 포스코 | 응고 장치 |
DE102022208498A1 (de) | 2022-08-16 | 2024-02-22 | Sms Group Gmbh | Verfahren zum Herstellen metallischer Bänder durch Gießwalzen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB766584A (en) | 1953-07-04 | 1957-01-23 | Mannesmann Ag | Improvements in the production of cavity-free continuously cast billets |
DE19817034A1 (de) | 1998-04-17 | 1999-10-21 | Schloemann Siemag Ag | Verfahren und Vorrichtung zum Stranggießen von dünnen Metallbändern |
EP1033190A1 (de) | 1999-03-03 | 2000-09-06 | SMS Demag AG | Giessprofil für Stranggiessprodukte aus Stahl in Form von Brammen |
WO2004065030A1 (de) | 2003-01-22 | 2004-08-05 | Sms Demag Aktiengsellschaft | Verfahren und vorrichtung zur erzeugung von stranggegossenen stahlbrammen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55128358A (en) * | 1979-03-26 | 1980-10-04 | Nippon Steel Corp | Continuous casting method |
JPH0761488B2 (ja) * | 1986-02-12 | 1995-07-05 | 川崎製鉄株式会社 | 熱間鋼帯の製造方法および設備 |
JPH01178302A (ja) * | 1988-01-06 | 1989-07-14 | Toshiba Corp | 熱間圧延システム |
JPH091292A (ja) * | 1995-06-21 | 1997-01-07 | Sumitomo Metal Ind Ltd | 薄鋳片の連続鋳造方法 |
DE19916173A1 (de) * | 1999-04-10 | 2000-10-12 | Sms Demag Ag | Verfahren und Vorrichtung zum Einstellen des Brammenprofils einer stranggegossenen Bramme, insbesondere einer Dünnbramme |
JP2000334552A (ja) * | 1999-05-25 | 2000-12-05 | Sumitomo Metal Ind Ltd | 薄鋳片の連続鋳造方法 |
JP2001058247A (ja) * | 1999-08-19 | 2001-03-06 | Sumitomo Metal Ind Ltd | 連続鋳造方法 |
JP2001113349A (ja) * | 1999-10-15 | 2001-04-24 | Sumitomo Metal Ind Ltd | 連続鋳造設備のロール圧下装置 |
JP2004001007A (ja) * | 2002-05-30 | 2004-01-08 | Katsuhiko Yamada | 連続鋳造鋳片の成形方法 |
-
2005
- 2005-12-14 DE DE102005059692A patent/DE102005059692A1/de not_active Withdrawn
-
2006
- 2006-11-27 KR KR1020087013322A patent/KR20080078650A/ko not_active Application Discontinuation
- 2006-11-27 BR BRPI0619864-3A patent/BRPI0619864A2/pt not_active Application Discontinuation
- 2006-11-27 WO PCT/EP2006/011339 patent/WO2007068338A1/de active Application Filing
- 2006-11-27 CN CNA2006800470388A patent/CN101330996A/zh active Pending
- 2006-11-27 US US12/086,523 patent/US8186422B2/en not_active Expired - Fee Related
- 2006-11-27 UA UAA200808295A patent/UA92049C2/ru unknown
- 2006-11-27 JP JP2008544793A patent/JP2009519134A/ja active Pending
- 2006-11-27 CA CA002631800A patent/CA2631800A1/en not_active Abandoned
- 2006-11-27 RU RU2008122474/02A patent/RU2383411C2/ru not_active IP Right Cessation
- 2006-11-27 AU AU2006326711A patent/AU2006326711B2/en not_active Ceased
- 2006-11-27 EP EP06829136A patent/EP1960136A1/de not_active Withdrawn
- 2006-11-28 TW TW095143874A patent/TW200732061A/zh unknown
- 2006-12-14 AR ARP060105533A patent/AR057241A1/es unknown
-
2008
- 2008-05-15 ZA ZA200804269A patent/ZA200804269B/xx unknown
- 2008-06-08 EG EG2008060946A patent/EG25046A/xx active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB766584A (en) | 1953-07-04 | 1957-01-23 | Mannesmann Ag | Improvements in the production of cavity-free continuously cast billets |
DE19817034A1 (de) | 1998-04-17 | 1999-10-21 | Schloemann Siemag Ag | Verfahren und Vorrichtung zum Stranggießen von dünnen Metallbändern |
EP1071529B1 (de) | 1998-04-17 | 2004-09-29 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren zum stranggiessen von dünnen metallbändern |
EP1033190A1 (de) | 1999-03-03 | 2000-09-06 | SMS Demag AG | Giessprofil für Stranggiessprodukte aus Stahl in Form von Brammen |
WO2004065030A1 (de) | 2003-01-22 | 2004-08-05 | Sms Demag Aktiengsellschaft | Verfahren und vorrichtung zur erzeugung von stranggegossenen stahlbrammen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1917115B2 (de) † | 2005-11-22 | 2018-03-14 | SMS group GmbH | Verfahren und vorrichtung zum anstellen von mindestens einem rollensegment einer strangführungseinrichtung an einen strang |
Also Published As
Publication number | Publication date |
---|---|
CN101330996A (zh) | 2008-12-24 |
KR20080078650A (ko) | 2008-08-27 |
EP1960136A1 (de) | 2008-08-27 |
TW200732061A (en) | 2007-09-01 |
AU2006326711B2 (en) | 2010-08-26 |
CA2631800A1 (en) | 2007-06-21 |
EG25046A (en) | 2011-07-19 |
AR057241A1 (es) | 2007-11-21 |
DE102005059692A1 (de) | 2007-06-21 |
UA92049C2 (ru) | 2010-09-27 |
RU2008122474A (ru) | 2009-12-10 |
RU2383411C2 (ru) | 2010-03-10 |
US8186422B2 (en) | 2012-05-29 |
US20090199391A1 (en) | 2009-08-13 |
AU2006326711A2 (en) | 2008-08-21 |
JP2009519134A (ja) | 2009-05-14 |
AU2006326711A1 (en) | 2007-06-21 |
BRPI0619864A2 (pt) | 2011-10-25 |
ZA200804269B (en) | 2009-03-25 |
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