EP1054737A1 - Verfahren und vorrichtung zur trennung von unterschiedlich elektrisch leitfähigen partikeln - Google Patents
Verfahren und vorrichtung zur trennung von unterschiedlich elektrisch leitfähigen partikelnInfo
- Publication number
- EP1054737A1 EP1054737A1 EP99906222A EP99906222A EP1054737A1 EP 1054737 A1 EP1054737 A1 EP 1054737A1 EP 99906222 A EP99906222 A EP 99906222A EP 99906222 A EP99906222 A EP 99906222A EP 1054737 A1 EP1054737 A1 EP 1054737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- eddy current
- separated
- magnet system
- separation
- 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.)
- Granted
Links
- 239000002245 particle Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 230000001965 increasing effect Effects 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000013528 metallic particle Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- -1 ferrous metals Chemical class 0.000 description 11
- 230000005291 magnetic effect Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
- B03C1/24—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields
- B03C1/247—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields obtained by a rotating magnetic drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation of bulk or dry particles in mixtures
Definitions
- the invention relates to a method for separating different electrically conductive particles, in particular waste materials, by means of eddy current separation and an eddy current separator for carrying out the method with a rotatable magnet system and a transport flow of the particles to be separated along it.
- ferromagnetic materials in particular iron
- the further separation of non-ferrous metals from one another and from plastic can be carried out by means of eddy current separation after removal of the ferromagnetic materials due to the different electrical conductivity.
- a current is induced in the eddy current separator in an inducing magnetic field in the particles to be separated which are guided through the magnetic field and thus a force is generated which forces the particles out of the magnetic field.
- the deflection of non-ferrous metals in the eddy current separator is determined by the electrical conductivity ⁇ and the density p (specific weight) of the materials to be separated.
- EP 0 339 195 B1 describes a magnetic separator with a conveyor belt guided over a belt drum made of non-electrically conductive material for the transport of a fraction to be sorted from more or less highly electrically conductive particles with a rotation speed in the belt drum that is higher than that of the belt drum driven magnet system and one in the material discharge zone of the belt drum arranged collecting container for the separated electrically conductive particles. It specifies in particular how damage to the belt drum caused by particles, in particular iron particles, between the conveyor belt and the belt drum can be avoided. This is done by a certain geometry in the structure.
- a disadvantage of the known eddy current separators is that separation of different non-ferrous metals from one another is only possible with difficulty and with errors. This is mainly due to the fact that the physical properties determining the ability to separate show only slight differences.
- the task is therefore to achieve an improved separation of non-ferrous metals from one another in the eddy current separation.
- the object is achieved in that the particles to be separated which are supplied for the eddy current separation are cooled.
- the object is achieved in an eddy current separator mentioned at the outset in that a cooling chamber is arranged upstream of the particle stream, through which the particles are guided.
- the ⁇ / p ratio differs in the temperature range from 100-300 K for aluminum, magnesium, copper and zinc, as indicated in the graphic shown in FIG. 1.
- the values are taken from: CRC Handbook of Chemistry and Physics, publisher: David R. Lide, born 1992 - 93, 73rd edition, publisher CRC Press, Boca Raton etc. From the graphic it can be seen that with decreasing temperatures both ⁇ / p for each element increases in absolute terms and ⁇ ( ⁇ / p) for two elements. This means that a higher yield and a sharper separation, especially below 150 K, can be expected for waste separation.
- the eddy current separation should take place immediately after cooling.
- an increased separation capacity can be found in particular below 150 K. Cooling to 100-150 K of the particles is therefore preferred. It is also sufficient if at least the surfaces of the particles are cooled to the desired temperature, since the eddy currents generated by the inducing magnetic fields essentially flow on the surface of the particles.
- liquid nitrogen is used to cool the particles, simple and effective cooling of the particles is achieved. Since the boiling point of nitrogen is approximately 80 K, the preferred temperature range can be achieved at least on the surfaces of the particles. A further influence on the process by the nitrogen is excluded.
- the different materials also have different thermal conductivity coefficients; they react to cooling at different speeds and intensities. Since this cooling process takes place over a finite time and the separation is carried out on the cooling in terms of time, the temperature of the particles to be sorted is different, despite the identically acting cooling system.
- the cooling chamber is designed as a closed channel with a feed opening and an outlet opening for the particles to be separated.
- the coolant introduced into the closed channel for example liquid nitrogen, can be metered sparingly.
- the supply of the particles to be separated through the channel is ensured in that the channel is designed as a slide or vibrating conveyor.
- the fact that the channel has a substantially rectangular cross-section avoids agglomeration of the particles to be separated.
- the channel preferably has the width of the downstream conveyor belt for eddy current separation.
- a conveyor belt made of electrically non-conductive material has proven useful for generating the transport stream guided along the rotatable magnet system.
- the axis of rotation of the rotatable magnet system should be arranged parallel to the transport stream of the particles to be separated.
- the rotatable magnet system is preferably arranged between the upper run and lower run of the conveyor belt.
- Fig. 2 shows an eddy current separator according to the invention in a spatial view
- Fig. 3 shows the device shown in Figure 2 in front view.
- a structure of a device according to the invention is schematically represented spatially in FIG. 2.
- the particle stream to be separated is fed from the left and passed through a cooling chamber 2.
- the cooling chamber 2 essentially has a rectangular cross section, as can be seen in the front view in FIG. 3.
- the cooling chamber 2 is elongated and has a feed opening (not shown) and an outlet opening 21 which is arranged directly above a conveyor belt 11.
- the conveyor belt 11 is guided over deflection rollers 12, 13.
- a rotatable magnet system 14 is arranged between the upper run and the lower run of the conveyor belt 11.
- the axis of rotation of the rotatable magnet system 14 is aligned parallel to the transport direction of the conveyor belt 11.
- This part forms a conventional eddy current separator 1, which allows separation of differently conductive particles X, Y.
- the electrically conductive particles X undergo a deflection on the conveyor belt 11 above the rotating magnet system 14 and pass next to the conveyor belt 11 into a collecting container 15.
- the non-electrically conductive particles Y for example made of plastic, pass through the deflection roller 13 of the conveyor belt 11 into a collecting container 16.
- FIG. 3 shows an end view of the device according to the invention.
- the cooling chamber 2 consists of a closed channel, which is formed from a U-shaped lower part 22 and a cover 23.
- Liquid nitrogen is fed into this closed channel 22, 23 of the cooling chamber 2 for cooling the particles X, Y supplied therein.
- the nitrogen flows through the channel 22, 23 and thus cools in particular the surfaces of the particles.
- the nitrogen is thus guided in a jacket around a cell that contains part of the conveyor belt and the magnetic field.
- the air in the cell is cooled to the desired operating temperature, preferably below 150 K, and kept stable by an appropriate nitrogen inflow.
- the cooling of the material to be separated comes about through heat conduction and convection. Since the eddy current density is greatest on the surface of the material, it is not necessary to bring about a complete temperature equalization. A very rough estimate shows that with aluminum and copper with a thickness of 1 mm the cooling takes place in the time ⁇ 1 s, so that it is possible to work with the eddy current separators known at room temperature for conveyor belt speeds.
- the channel 22, 23 is designed as a slide or vibratory conveyor for the transport of the particles.
- the particles X, Y which pass through and are cooled in this way fall down onto the conveyor belt 11 at the discharge opening 21 and are transported by the conveyor belt 11 made of non-conductive material via the rotating magnet system 14. There the electrically conductive particles X experience
- IRSATZBLATT (RULE 26) depending on their conductivity and density, a material-dependent lateral deflection.
- non-conductive substances for example plastic
- electrically conductive non-ferrous metals it is possible to separate non-conductive substances from one another.
- particles made of aluminum experience a greater deflection than particles made of magnesium, and these have a greater deflection than particles made of copper and these have a greater deflection than particles made of zinc.
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Sorting Of Articles (AREA)
- Electrostatic Separation (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9930150T SI1054737T1 (en) | 1998-02-09 | 1999-02-09 | Method and device for separating different electrically conductive particles |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19804878A DE19804878A1 (de) | 1998-02-09 | 1998-02-09 | Verfahren und Vorrichtung zur Trennung von unterschiedlich elektrisch leitfähigen Partikeln |
| DE19804878 | 1998-02-09 | ||
| PCT/EP1999/000845 WO1999039831A1 (de) | 1998-02-09 | 1999-02-09 | Verfahren und vorrichtung zur trennung von unterschiedlich elektrisch leitfähigen partikeln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1054737A1 true EP1054737A1 (de) | 2000-11-29 |
| EP1054737B1 EP1054737B1 (de) | 2002-11-13 |
Family
ID=7856929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99906222A Expired - Lifetime EP1054737B1 (de) | 1998-02-09 | 1999-02-09 | Verfahren und vorrichtung zur trennung von unterschiedlich elektrisch leitfähigen partikeln |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6318558B1 (de) |
| EP (1) | EP1054737B1 (de) |
| AT (1) | ATE227606T1 (de) |
| AU (1) | AU2622999A (de) |
| DE (2) | DE19804878A1 (de) |
| DK (1) | DK1054737T3 (de) |
| ES (1) | ES2182488T3 (de) |
| PT (1) | PT1054737E (de) |
| WO (1) | WO1999039831A1 (de) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809729A1 (de) * | 1998-03-06 | 1999-09-09 | Rottefella As | Langlauf- oder Tourenskibindung |
| ES2238889B1 (es) * | 2002-12-17 | 2006-11-16 | Claudino Jose Cardoso Saturnino | Sistema de separacion de metales no ferricos. |
| US7341155B2 (en) * | 2004-10-07 | 2008-03-11 | Rineco Chemical Industries, Inc. | Systems and methods for processing waste materials |
| US20060081504A1 (en) * | 2004-10-07 | 2006-04-20 | Rineco Chemical Industries, Inc. | Systems and methods for processing waste materials |
| WO2008125699A1 (es) * | 2007-04-11 | 2008-10-23 | Felemamg, S.L. | Separador magnético lineal por corrientes de foucault |
| DE102009044631A1 (de) * | 2009-11-23 | 2011-05-26 | Jäger, Reinhold | Einrichtung zum Transportieren |
| DE102009056717A1 (de) | 2009-12-04 | 2011-06-09 | Hubertus Exner | Vorrichtung und Verfahren zur Trennung von unterschiedlich elektrisch leitfähigen Partikeln |
| DE102010036267A1 (de) * | 2010-09-03 | 2012-03-08 | Alexander Koslow | Trennverfahren und -vorrichtung für NE-Metalle |
| US8857746B2 (en) | 2010-11-09 | 2014-10-14 | Eriez Manufacturing Co. | Process for improving the quality of separated materials in the scrap metal industry |
| US10434519B2 (en) * | 2011-03-24 | 2019-10-08 | Aamon Ross | Systems and methods for separating refuse |
| WO2015052368A1 (en) * | 2013-10-10 | 2015-04-16 | Magsort Oy | A method and a device for separating weakly magnetic particles |
| TWI546158B (zh) * | 2013-12-20 | 2016-08-21 | 中國砂輪企業股份有限公司 | 低磁性化學機械研磨修整器 |
| US10427167B2 (en) | 2015-04-14 | 2019-10-01 | Magsort Oy | Device and method for separating weakly magnetic particles |
| DE202016103266U1 (de) | 2016-06-21 | 2016-08-02 | Sebastian Anton Schley | Vorrichtung zur Trennung von Partikeln unterschiedlicher elektrischer Leitfähigkeit in einem inhomogenen Sortiergut |
| US10675638B2 (en) * | 2016-09-21 | 2020-06-09 | Magnetic Systems International | Non contact magnetic separator system |
| CN111589578B (zh) * | 2020-05-14 | 2025-07-22 | 河南中孚炭素有限公司 | 一种铁质分选器及其安装分选方法 |
| KR102654702B1 (ko) * | 2023-06-13 | 2024-04-09 | 주식회사 세정크린 | 재활용품 자동 분류장치 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US401415A (en) * | 1889-04-16 | Magnetic separator | ||
| US731043A (en) * | 1900-04-14 | 1903-06-16 | Theodore J Mayer | Separating diamagnetic metal from sands, &c. |
| CH315808A (de) * | 1953-09-18 | 1956-09-15 | Roth Erwin | Magnetabscheider |
| US4609109A (en) * | 1982-07-06 | 1986-09-02 | Cryogenic Consultants Limited | Superconducting magnetic separators |
| US4743364A (en) * | 1984-03-16 | 1988-05-10 | Kyrazis Demos T | Magnetic separation of electrically conducting particles from non-conducting material |
| HUT47761A (en) * | 1987-04-27 | 1989-03-28 | Mta Koezponti Fiz Kutato Intez | Method and apparatus for improving the quality of superconducting substances with the method of variable temperature magnetic separation |
| WO1988009768A1 (fr) * | 1987-06-09 | 1988-12-15 | Mitsubishi Denki Kabushiki Kaisha | Procede de production d'un supraconducteur a base d'oxyde |
| US4935463A (en) * | 1987-06-15 | 1990-06-19 | Chemco Technologies, Inc. | Surface composition for a substrate and method of preparation |
| US4828685A (en) * | 1987-06-24 | 1989-05-09 | General Atomics | Method and apparatus for the enhancement of superconductive materials |
| JPS6422359A (en) | 1987-07-16 | 1989-01-25 | Fujikura Ltd | Production of superconductive material |
| US4834870A (en) * | 1987-09-04 | 1989-05-30 | Huron Valley Steel Corporation | Method and apparatus for sorting non-ferrous metal pieces |
| JPH01107856A (ja) | 1987-10-21 | 1989-04-25 | Nippon Mining Co Ltd | 超電導物質の分離回収方法 |
| JPH01107857A (ja) * | 1987-10-21 | 1989-04-25 | Mitsubishi Electric Corp | 超電導物質の分離方法 |
| US5049540A (en) * | 1987-11-05 | 1991-09-17 | Idaho Research Foundation | Method and means for separating and classifying superconductive particles |
| JPH01130745A (ja) * | 1987-11-17 | 1989-05-23 | Mitsubishi Electric Corp | 超電導物質の分離方法および分離装置 |
| US5182253A (en) * | 1987-12-09 | 1993-01-26 | Canon Kabushiki Kaisha | Purification apparatus for superconductor fine particles |
| JPH01155953A (ja) | 1987-12-14 | 1989-06-19 | Chiyoda Corp | 超電導体素材の分離方法 |
| JPH01179704A (ja) * | 1988-01-09 | 1989-07-17 | Fujikura Ltd | 超電導酸化物単結晶の分離方法 |
| US5047387A (en) * | 1988-01-19 | 1991-09-10 | The United States Of America As Represented By The Secretary Of The Navy | Method for the selecting superconducting powders |
| JPH01194951A (ja) | 1988-01-29 | 1989-08-04 | Matsushita Electric Ind Co Ltd | 超電導物質の分離方法 |
| JPH01304060A (ja) * | 1988-02-02 | 1989-12-07 | Koujiyundo Kagaku Kenkyusho:Kk | 超伝導粉末の分離方法とその装置 |
| JPH01210044A (ja) * | 1988-02-18 | 1989-08-23 | Koujiyundo Kagaku Kenkyusho:Kk | 超伝導粉末の分離装置 |
| DE19600647A1 (de) * | 1996-01-10 | 1997-07-17 | Ktb Kommunale Technologie Bera | Verfahren und Anlage zur Verwertung von Kabelmuffen mittels Tieftemperaturtechnik |
| US5919737A (en) * | 1998-04-21 | 1999-07-06 | Broide; Efim | Method of separating a superconducting fraction from a mixture |
-
1998
- 1998-02-09 DE DE19804878A patent/DE19804878A1/de not_active Withdrawn
-
1999
- 1999-02-09 ES ES99906222T patent/ES2182488T3/es not_active Expired - Lifetime
- 1999-02-09 WO PCT/EP1999/000845 patent/WO1999039831A1/de not_active Ceased
- 1999-02-09 DK DK99906222T patent/DK1054737T3/da active
- 1999-02-09 US US09/601,968 patent/US6318558B1/en not_active Expired - Fee Related
- 1999-02-09 PT PT99906222T patent/PT1054737E/pt unknown
- 1999-02-09 EP EP99906222A patent/EP1054737B1/de not_active Expired - Lifetime
- 1999-02-09 AT AT99906222T patent/ATE227606T1/de not_active IP Right Cessation
- 1999-02-09 DE DE59903394T patent/DE59903394D1/de not_active Expired - Fee Related
- 1999-02-09 AU AU26229/99A patent/AU2622999A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9939831A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2622999A (en) | 1999-08-23 |
| ATE227606T1 (de) | 2002-11-15 |
| DK1054737T3 (da) | 2003-03-10 |
| EP1054737B1 (de) | 2002-11-13 |
| WO1999039831A1 (de) | 1999-08-12 |
| US6318558B1 (en) | 2001-11-20 |
| DE59903394D1 (de) | 2002-12-19 |
| ES2182488T3 (es) | 2003-03-01 |
| PT1054737E (pt) | 2003-03-31 |
| DE19804878A1 (de) | 1999-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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