EP0904165B1 - Process for manufacturing hot rolled steel strips - Google Patents
Process for manufacturing hot rolled steel strips Download PDFInfo
- Publication number
- EP0904165B1 EP0904165B1 EP97921621A EP97921621A EP0904165B1 EP 0904165 B1 EP0904165 B1 EP 0904165B1 EP 97921621 A EP97921621 A EP 97921621A EP 97921621 A EP97921621 A EP 97921621A EP 0904165 B1 EP0904165 B1 EP 0904165B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- coil
- deformation
- deformation stage
- precursor
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 9
- 239000010959 steel Substances 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 30
- 238000005266 casting Methods 0.000 claims abstract description 7
- 238000009749 continuous casting Methods 0.000 claims abstract description 5
- 239000002243 precursor Substances 0.000 claims abstract 11
- 239000000463 material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 11
- 239000000872 buffer Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 1
- 239000012464 large buffer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- the invention relates to a method for producing hot-rolled steel strip continuously cast supporting strip in at least two deformation stages, each with one or more rolling stands, in which in the first deformation stage with the Exit speed of the pre-strip rolled out of the continuous caster and that intermediate belt produced before the second deformation stage Exit speed from the first deformation stage wound into a bundle is processed after reaching the bundle weight and with Piercing speed of the second deformation stage for finish rolling and is then wound into the desired finished bundle sizes.
- a generic method is for example in the German patent 38 40 812 C2 and has become known in the literature as the ISP process.
- the main characteristic of this process is the two-stage rolling process first deformation stage directly after the casting machine Casting speed occurs and its second stage of deformation at one clearly higher rolling speed is carried out.
- These two are coupled Rolling stages through an intermediate winding system in the form of a reel furnace, in after which the continuously cast slab is rolled into a bundle whose weight corresponds to the desired finished coil weight.
- the Subdivision of the strand which is initially endless is therefore carried out subsequently the first stage of deformation when that coil weight in the reel furnace is reached, the weight of the finished bundle after being rolled out in the second Deformation level is the same.
- the method steps according to the invention increase the buffer capacity of the Intermediate winding system clearly. With a winding capacity of around 100 tons for example, the buffer capacity would be 60 minutes per inter-bundle increase. As a result of the higher final rolling speeds with such Procedure is possible, hot strip with thicknesses ⁇ 1.2 mm be made endless. The output of the plant is improved, since only for the beginning of the first and the end of the last bundle behind the finishing train developed typical rolling tongue, which must be removed before further processing. In addition, the quality of the rolling stock can be improved since the unsteady The piercing condition only occurred once on the first fret.
- the winding of the intermediate band into an intermediate band can be both thornless as well as on a mandrel. Beyond one another Feature of the invention by changing the temperature control before winding of the intermediate collar and / or before the second deformation stage and by flexible Speed control the metallurgical properties within a Inter-bundle length changeable.
- the advantages of the present method are Possibility of endless rolling without pre-weld, endless rolling with homogeneous opening properties with regard to temperature and geometry, the Production increase of the plant through higher possible rolling speeds are no longer restricted by the threading process in the reel and by the Creation of large buffer capacity between the casting line and the finishing train.
- the process can be used within single or double-leg systems be, the winding principle of the supporting strip both mandrel-bound in winding furnaces as can be done without spines in so-called coil boxes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von warmgewalztem Stahlband aus stranggegossenem Vorband in mindestens zwei Verformungsstufen mit jeweils einem oder mehreren Walzgerüsten, bei dem in der ersten Verformungsstufe mit der Austrittsgeschwindigkeit des Vorbandes aus der Stranggießanlage angewalzt und das dabei erzeugte Zwischenband vor der zweiten Verformungsstufe mit Austrittsgeschwindigkeit aus der ersten Verformungsstufe zu einem Bund aufgewickelt wird, das nach Erreichen des Bundgewichtes abgewickelt und mit Anstichgeschwindigkeit der zweiten Verformungsstufe zur Fertigwalzung zugeführt und danach in gewünschten Fertigbundgrößen aufgewickelt wird.The invention relates to a method for producing hot-rolled steel strip continuously cast supporting strip in at least two deformation stages, each with one or more rolling stands, in which in the first deformation stage with the Exit speed of the pre-strip rolled out of the continuous caster and that intermediate belt produced before the second deformation stage Exit speed from the first deformation stage wound into a bundle is processed after reaching the bundle weight and with Piercing speed of the second deformation stage for finish rolling and is then wound into the desired finished bundle sizes.
Ein gattungsgemäßes Verfahren ist beispielsweise in der deutschen Patentschrift 38 40 812 C2 beschrieben und in der Literatur als ISP-Verfahren bekannt geworden. Wesentliches Kennzeichen dieses Verfahrens ist der zweistufige Walzprozeß, dessen erste Verformungsstufe direkt im Anschluß an die Gießmaschine bei Gießgeschwindigkeit erfolgt und dessen zweite Verformungsstufe bei einer deutlich höheren Walzgeschwindigkeit durchgeführt wird. Gekoppelt sind diese beiden Walzprozeßstufen durch ein Zwischenwickelsystem in Form eines Haspelofens, in dem die stranggegossene Bramme nach dem Auswalzen zu einem Bund gewickelt wird, dessen Gewicht dem gewünschten Fertigbundgewicht entspricht. Die Unterteilung des zunächst endlos erzeugten Stranges erfolgt deshalb im Anschluß an die erste Verformungsstufe dann, wenn in dem Haspelofen dasjenige Bundgewicht erreicht ist, das dem Gewicht des Fertigbundes nach dem Auswalzen in der zweiten Verformungsstufe gleich ist.A generic method is for example in the German patent 38 40 812 C2 and has become known in the literature as the ISP process. The main characteristic of this process is the two-stage rolling process first deformation stage directly after the casting machine Casting speed occurs and its second stage of deformation at one clearly higher rolling speed is carried out. These two are coupled Rolling stages through an intermediate winding system in the form of a reel furnace, in after which the continuously cast slab is rolled into a bundle whose weight corresponds to the desired finished coil weight. The Subdivision of the strand which is initially endless is therefore carried out subsequently the first stage of deformation when that coil weight in the reel furnace is reached, the weight of the finished bundle after being rolled out in the second Deformation level is the same.
Beim Walzen von Warmband nach diesem Prozeß stellt das Einfädeln des Bandkopfes in den Haspel eine Begrenzung der Walzgeschwindigkeit dar, weil bei sehr hohen Geschwindigkeiten die Gefahr eines Hochgehens des Bandkopfes auf dem Auslaufrollgang besteht. Ist der Bandkopf im Haspel eingefangen, könnte praktisch die Walzgeschwindigkeit im Rahmen der Möglichkeiten der Anlage sowie der technologischen Erfordernisse beliebig gesteigert werden.When rolling hot strip according to this process, the threading of the strip head represents in the reel is a limitation of the rolling speed because at very high Speeds the danger of the tape head going up on the Exit roller table exists. If the tape head is caught in the reel, that could practically be Rolling speed within the possibilities of the plant and the technological requirements can be increased arbitrarily.
Zur Überwindung der geschilderten Walzgeschwindigkeitsbegrenzung sind Verfahren zum Endloswalzen entwickelt worden, die auf dem Prinzip des Zusammenfügens der Vorbänder vor Eintritt in die Fertigstraße beruhen. Beispielsweise wird vorgeschlagen, mehrere Vorbänder stirnseitig zusammenzuschweißen, um dadurch die Einfädelvorgänge zu reduzieren und quasi endlos walzen zu können. Das Zusammenschweißen der Vorbänder erfordert jedoch aufwendige Anlagen und begrenzt ebenfalls die mögliche Walzgeschwindigkeit.There are methods for overcoming the described rolling speed limitation have been developed for continuous rolling based on the principle of joining the Support strips are based before entering the finishing train. For example, it is suggested to weld several pre-strips together on the face to thereby To reduce threading processes and to be able to roll almost endlessly. The However, welding the pre-strips together requires complex systems and also limits the possible rolling speed.
Bei dem Verfahren, von dem die Erfindung ausgeht, werden, wie bereits ausgeführt, Vorbänder im Stranggießverfahren erstellt und zu Bunden aufgewickelt, deren Gewicht dem Gewicht des Fertigbandbundes entspricht. Dazu wird das Vorband nach Erreichen des Bundgewichtes in der Zwischenwickelstation abgetrennt und somit von der Gießanlage entkoppelt, so daß ein Abwickeln des Bandes in die Fertigstraße mit höherer Geschwindigkeit erfolgen kann. Durch die vorstehend beschriebene Gefahr beim Einfädeln des Bandkopfes in den Haspel werden die Walzgeschwindigkeiten jedoch begrenzt, so daß gerade beim Walzen dünner Warmbänder in der Größenordnung unter 1,5 mm erhebliche Probleme entstehen. Konventionelle Anlagen sind deshalb kaum in der Lage, dünnes Warmband in großen Mengen herzustellen.In the method on which the invention is based, as already stated, Support strips created in a continuous casting process and wound into bundles, their weight corresponds to the weight of the finished tape bundle. For this, the opening act is after Reaching the coil weight in the intermediate winding station separated and thus from the caster decoupled, so that unwinding of the strip in the finishing train with higher speed can take place. Due to the danger described above when threading the strip head into the reel, the rolling speeds however limited, so that especially when rolling thin hot strips in the In the order of less than 1.5 mm, considerable problems arise. Conventional systems are therefore hardly able to produce thin hot strip in large quantities.
Ausgehend von den dargelegten Problemen und Nachteilen des Standes der Technik ist es die Aufgabe der vorliegenden Erfindung, ein Verfahren zum Herstellen von warmgewalztem Stahlband vorzuschlagen, bei dem mit höheren Endwalzgeschwindigkeiten auch sehr dünne Bänder sicher gewalzt werden können.Based on the problems and disadvantages of the state of the art it is the object of the present invention to provide a method for producing to propose hot rolled steel strip, in the case of higher Final rolling speeds can be rolled even very thin strips safely.
Diese Aufgabe wird durch die Merkmalskombination des Anspruchs 1 gelöst. This task is accomplished through the combination of features of claim 1 solved.
Auf einer gattungsgemäßen Gießanlage mit nachgeschalteter Vorverformungsgruppe wird in einem Endloswalzprozeß Vormaterial zur Fertigbearbeitung in der Fertigstraße erzeugt. Entgegen dem üblichen Betriebsmodus, bei dem dieses Vormaterial in den späteren Bundgewichten entsprechende Teile geschnitten wird, wird das Vormaterial mit dem Ziel des Endloswalzens nicht hinter der Verformungsgruppe getrennt, sondern ungetrennt zu einem mehrere Fertigbunde umfassenden Zwischenbund aufgewickelt. Aus diesem Zwischenbund werden dann in einem Endloswalzprozeß in der Fertigstraße mehrere Bundlängen fertigbearbeitet. Die Größe des Zwischenbundes wird nur durch die mechanische Auslegung der Wickeleinheit sowie die Walzzeit, mit der die Fertigstraße ohne Walzenwechsel betrieben werden kann, begrenzt. Es ist durchaus denkbar, bei entsprechenden Wickeleinrichtungen ganze Gießsequenzen einer Stranggießanlage endlos auszuwalzen, mindestens jedoch wesentlich größere Tonnagen, als dies auf Anlagen nach dem Stand der Technik möglich ist.On a generic casting machine with a downstream pre-forming group In a continuous rolling process, raw material is processed for finishing in the finishing train generated. Contrary to the usual operating mode, in which this material in the the corresponding material is cut at later coil weights, the primary material with the aim of endless rolling not separated behind the deformation group, but wound up separately into an intermediate bundle comprising several finished bundles. From this intermediate collar are then in an endless rolling process in the Finishing mill finished several bundle lengths. The size of the intermediate waistband is only due to the mechanical design of the winding unit and the rolling time that the finishing train can be operated without changing rolls. It is entirely conceivable, with appropriate winding devices, entire casting sequences to be rolled out endlessly in a continuous caster, but at least much larger Tonnage than is possible on state-of-the-art systems.
Die erfindungsgemäßen Verfahrensschritte erhöhen die Pufferkapazität des Zwischenwickelsystems deutlich. Bei einer Wickelkapazität von etwa 100 Tonnen würde sich beispielsweise die Pufferkapazität auf 60 Minuten pro Zwischenbund erhöhen. Infolge der höheren Endwalzgeschwindigkeiten, die mit einer derartigen Verfahrensweise möglich wird, kann problemlos Warmband mit Dicken < 1,2 mm endlos hergestellt werden. Die Ausbringung der Anlage wird verbessert, da sich nur für den Anfang des ersten und das Ende des letzten Bundes hinter der Fertigstraße die typische Walzzunge entwickelt, die vor einer Weiterverarbeitung entfernt werden muß. Darüber hinaus läßt sich die Qualität des Walzgutes verbessern, da der instationäre Zustand des Anstichstoßes nur einmal beim ersten Bund erfolgt.The method steps according to the invention increase the buffer capacity of the Intermediate winding system clearly. With a winding capacity of around 100 tons for example, the buffer capacity would be 60 minutes per inter-bundle increase. As a result of the higher final rolling speeds with such Procedure is possible, hot strip with thicknesses <1.2 mm be made endless. The output of the plant is improved, since only for the beginning of the first and the end of the last bundle behind the finishing train developed typical rolling tongue, which must be removed before further processing. In addition, the quality of the rolling stock can be improved since the unsteady The piercing condition only occurred once on the first fret.
Das Aufwickeln des Zwischenbandes zu einem Zwischenbund kann sowohl dornlos wie auch auf einem Dorn erfolgen. Darüber hinaus werden nach einem anderen Merkmal der Erfindung durch Veränderung der Temperaturführung vor dem Aufwickeln des Zwischenbundes und/oder vor der zweiten Verformungsstufe sowie durch flexible Geschwindigkeitsführung die metallurgischen Eigenschaften innerhalb einer Zwischenbundlänge veränderbar.The winding of the intermediate band into an intermediate band can be both thornless as well as on a mandrel. Beyond one another Feature of the invention by changing the temperature control before winding of the intermediate collar and / or before the second deformation stage and by flexible Speed control the metallurgical properties within a Inter-bundle length changeable.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß durch geeignete Einstellung der Walzparameter während der Verformung des Zwischenbandes innerhalb der zweiten Verformungsstufe die geometrischen Eigenschaften der aus einem Zwischenbund hergestellten Fertigbunde verändert werden.In a further embodiment of the invention it is provided that by suitable Setting the rolling parameters during the deformation of the intermediate belt within the second deformation stage the geometric properties of the prefabricated bundles produced by an intermediate bundle can be changed.
Günstigerweise ist vorzusehen, daß während des Aufwickelns des Vorbandes zu dem Zwischenbund mindestens die Kanten des Zwischenbandes gegen Auskühlung abgeschirmt werden.Conveniently it should be provided that during the winding of the opening strip to the Intermediate collar at least the edges of the intermediate belt against cooling be shielded.
Zusammengefaßt bestehen die Vorteile des vorliegenden Verfahrens in der Möglichkeit der endlosen Walzung ohne Vorbandschweißung, der endlosen Walzung mit homogenen Vorbandeigenschaften hinsichtlich Temperatur und Geometrie, der Produktionserhöhung der Anlage durch höhere mögliche Walzgeschwindigkeiten, die nicht mehr durch den Einfädelvorgang im Haspel beschränkt sind und durch die Schaffung großer Pufferkapazität zwischen dem Gießstrang und der Fertigstraße.In summary, the advantages of the present method are Possibility of endless rolling without pre-weld, endless rolling with homogeneous opening properties with regard to temperature and geometry, the Production increase of the plant through higher possible rolling speeds are no longer restricted by the threading process in the reel and by the Creation of large buffer capacity between the casting line and the finishing train.
Das Verfahren kann innerhalb von ein- oder zweisträngigen Anlagen angewendet werden, wobei das Wickelprinzip des Vorbandes sowohl dorngebunden in Wickelöfen wie auch dornlos in sogenannten Coilboxen erfolgen kann.The process can be used within single or double-leg systems be, the winding principle of the supporting strip both mandrel-bound in winding furnaces as can be done without spines in so-called coil boxes.
Claims (5)
- Method of producing hot-rolled steel strip from continuously cast precursor material in at least two deformation stages, each having one or more roll stands, wherein the precursor material is rolled out continuously in the first deformation stage, at the speed at which the precursor material exits from the continuous casting plant, to form an intermediate strip which, prior to the second deformation, is coiled at the exit speed from the first deformation stage without subdivision to form an intermediate coil and is then uncoiled in order to supply the intermediate strip to the more or less continuous finish-rolling, after which this intermediate strip is subdivided in accordance with the respectively desired coil weights and is coiled as finished strip,
characterised in that
at least 40 tons of a casting sequence of the continuous casting plant is cast to form precursor strip and rolled out in the first deformation stage to form an intermediate strip, the metallurgical characteristics of which are altered by changing the temperature control prior to coiling the intermediate coil and/or prior to the second deformation stage and by flexible speed control within an intermediate coil length. - Method of producing hot-rolled steel strip from continuously cast precursor strip according to claim 1,
characterised in that the geometrical characteristics of the finished coils produced from an intermediate coil are altered by suitable adjustment of the rolling parameters during the deformation of the intermediate strip within the second deformation stage. - Method of producing hot-rolled steel strip from continuously cast precursor strip according to claims 1 and 2,
characterised in that the coiling of the intermediate strip to form an intermediate coil takes place on a mandrel. - Method of producing hot-rolled steel strip from continuously cast precursor strip according to claims 1 and 2,
characterised in that the coiling of the intermediate strip to form an intermediate coil is carried out without a mandrel. - Method of producing hot-rolled steel strip from continuously cast precursor strip according to claims 1 to 4,
characterised in that, during the coiling of the precursor strip to form the intermediate coil, at least the edges of the intermediate strip are protected against cooling.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19617856A DE19617856C1 (en) | 1996-04-23 | 1996-04-23 | Method of hot rolling steel from concast material |
| DE19617856 | 1996-04-23 | ||
| PCT/DE1997/000787 WO1997039842A1 (en) | 1996-04-23 | 1997-04-15 | Process for manufacturing hot rolled steel strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0904165A1 EP0904165A1 (en) | 1999-03-31 |
| EP0904165B1 true EP0904165B1 (en) | 2002-03-06 |
Family
ID=7793281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97921621A Expired - Lifetime EP0904165B1 (en) | 1996-04-23 | 1997-04-15 | Process for manufacturing hot rolled steel strips |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20010007267A1 (en) |
| EP (1) | EP0904165B1 (en) |
| JP (1) | JP4056086B2 (en) |
| CN (1) | CN1081097C (en) |
| AT (1) | ATE213974T1 (en) |
| DE (2) | DE19617856C1 (en) |
| ID (1) | ID19561A (en) |
| RU (1) | RU2170640C2 (en) |
| WO (1) | WO1997039842A1 (en) |
| ZA (1) | ZA972449B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072709U (en) * | 1973-11-12 | 1975-06-26 | ||
| US4311186A (en) * | 1980-09-18 | 1982-01-19 | Antonio Spaccarotella | Method for quickly repairing break-outs in continuous casting plants |
| DE3241745C2 (en) * | 1982-11-11 | 1985-08-08 | Mannesmann AG, 4000 Düsseldorf | Process for the production of hot-rolled steel strip from continuously cast raw material in directly successive work steps |
| JPS5992103A (en) * | 1982-11-18 | 1984-05-28 | Kawasaki Steel Corp | Rolling method of hot strip |
| JPS61269905A (en) * | 1985-05-27 | 1986-11-29 | Nippon Kokan Kk <Nkk> | Method and apparatus for producing hot rolled steel strip |
| JPS62203602A (en) * | 1986-03-03 | 1987-09-08 | Sumitomo Metal Ind Ltd | Continuous hot rolling method for steel sheet |
| JPH0688072B2 (en) * | 1987-10-12 | 1994-11-09 | 株式会社日立製作所 | Continuous casting and rolling equipment |
| DE3743057C1 (en) * | 1987-12-18 | 1988-09-01 | Krupp Gmbh | Process and plant for producing hot-rolled strip from continuously cast starting material |
| IT1224318B (en) | 1988-05-26 | 1990-10-04 | Mannesmann Ag | PROCESS AND PLANT FOR THE CONTINUOUS PRODUCTION OF STEEL BELT |
| US5083687A (en) * | 1989-10-19 | 1992-01-28 | Kawasaki Steel Corporation | Nozzle for continuous casting and method of producing |
| TW235255B (en) * | 1992-07-02 | 1994-12-01 | Hitachi Seisakusyo Kk |
-
1996
- 1996-04-23 DE DE19617856A patent/DE19617856C1/en not_active Expired - Fee Related
-
1997
- 1997-03-20 ZA ZA9702449A patent/ZA972449B/en unknown
- 1997-04-15 RU RU98120908/02A patent/RU2170640C2/en not_active IP Right Cessation
- 1997-04-15 EP EP97921621A patent/EP0904165B1/en not_active Expired - Lifetime
- 1997-04-15 AT AT97921621T patent/ATE213974T1/en active
- 1997-04-15 DE DE59706562T patent/DE59706562D1/en not_active Expired - Lifetime
- 1997-04-15 CN CN97194060A patent/CN1081097C/en not_active Expired - Fee Related
- 1997-04-15 US US09/171,735 patent/US20010007267A1/en not_active Abandoned
- 1997-04-15 WO PCT/DE1997/000787 patent/WO1997039842A1/en not_active Application Discontinuation
- 1997-04-15 JP JP53759197A patent/JP4056086B2/en not_active Expired - Fee Related
- 1997-04-21 ID IDP971307A patent/ID19561A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE19617856C1 (en) | 1997-04-17 |
| ZA972449B (en) | 1997-09-29 |
| RU2170640C2 (en) | 2001-07-20 |
| WO1997039842A1 (en) | 1997-10-30 |
| ATE213974T1 (en) | 2002-03-15 |
| CN1216485A (en) | 1999-05-12 |
| EP0904165A1 (en) | 1999-03-31 |
| JP2000508587A (en) | 2000-07-11 |
| US20010007267A1 (en) | 2001-07-12 |
| DE59706562D1 (en) | 2002-04-11 |
| JP4056086B2 (en) | 2008-03-05 |
| CN1081097C (en) | 2002-03-20 |
| ID19561A (en) | 1998-07-23 |
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