WO2002050500A1 - Method for selecting a formulation for one or more layers of a multi-layer coating - Google Patents
Method for selecting a formulation for one or more layers of a multi-layer coating Download PDFInfo
- Publication number
- WO2002050500A1 WO2002050500A1 PCT/EP2001/014276 EP0114276W WO0250500A1 WO 2002050500 A1 WO2002050500 A1 WO 2002050500A1 EP 0114276 W EP0114276 W EP 0114276W WO 0250500 A1 WO0250500 A1 WO 0250500A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- primer
- colour
- formulation
- layer coating
- repaired
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 53
- 238000009472 formulation Methods 0.000 title claims abstract description 45
- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 239000011248 coating agent Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000470 constituent Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000008199 coating composition Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 46
- 239000000049 pigment Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010187 selection method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000819038 Chichester Species 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
- B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/463—Colour matching
Definitions
- the invention pertains to a method for selecting coating formulations for a multi- layer coating for repair purposes.
- a multi-layer coating typically comprises a primer applied on a substrate and at least one coating layer.
- the top layer generally is a clear coat, the underlying layer or layers being so-called base coats. If no clear coat is used, the top layer generally is called a top coat.
- the formulations of the primer and the coating layers are determined in such a way that the resulting colour of the cured multi-layer coating closely matches the colour of the object to be repaired, for example a car, while the amount of coating material needed is minimised.
- WO 97/43052 discloses a primer selection method using a grey primer having a reflectance in its dried state which is the same as the reflectance of the top coating measured at the wavelength of minimum absorption of the top coating. Only the grey tone of the primer is adapted to the base coat colour.
- coloured primers such as the Colorbuild ® primers marketed by Akzo Nobel Coatings, Sassenheim, the Netherlands.
- a primer is selected which has a colour matching, to some degree, the colour of the object to be repaired.
- a top or base coat can be applied which matches the colour of the car to be repaired. Due to the close colour match of the primer, a reduced amount of top coat or base coat is needed.
- a drawback to this system is that there is only a limited number of primer colours available. This limited number of available colours, however, still requires considerable storage space.
- US 4,552,780 discloses a method for application of a top coat at incomplete hiding over a colored intercoat. No suggestion is included to select a combination of a primer and a base or top coat matching together an original colour of an object to be repaired.
- the object of the invention is to provide a method as disclosed in the opening paragraph which allows a further reduction of the amount of coating material required for complete hiding.
- the preferred formulation can be determined either by selecting from a given set of predetermined formulations or by calculating the preferred formulation from a set of data of available constituents.
- These constituents can include base paints, binders, pigment pastes, toners, etc. Some of the constituents, such as toners, can be used in primer formulations as well as in base or top coat formulations. If the formulation is determined by calculation on the basis of the colorimetric data of the available constituents, the formulations can be produced in situ.
- the colorimetric data of the sample can for instance be provided by the input of an unambiguous colour code.
- the colorimetric data can be provided by means of a colour measuring device, such as a spectrophotometer or a related device.
- a colour measuring device such as a spectrophotometer or a related device.
- a suitable device is for example the Automatchic ® system, available from Akzo Nobel Coatings in Sassenheim, the Netherlands.
- Other suitable devices include a MacBeth Colour-Eye ® 3000, a BYK-Gardner ® 9300 handy-spec spectrophotometer, and an X-Rite ® MA-58 spectrophotometer.
- the colorimetric data can be provided in combination with the trademark of the car to be repaired, if so desired.
- the L*,a * ,b * parameters of the CIE Lab system as proposed by the Commission Internationale d'Eclairage (CIE) are used as the colorimetric data.
- Parameter "a * " is located at a red-green axis
- parameter "b*” is located at a yellow-blue axis
- the "L*” parameter is located at a lightness axis.
- alternative colour coordinates systems such as the CIE Luv system, may also be used, if so desired.
- K and S parameters can be used when determining the primer or base coat formulation.
- the K parameter stands for the absorption factor.
- the S parameter is the scattering factor.
- the selection method according to the invention can be used for the primer formulation only, in combination with the use of a top coat or base coat matching the colour of the object to be repaired.
- a first base coat layer may comprise effect pigments, such as metallic and pearlescent pigments, while a second base coat or top coat layer comprises solid colour pigments. Since the base coat or top coat does not need to be hiding completely, and the lower layers may be visible to some extent, colours may be formed which would not be reproducible when using a base coat or top coat as the only coloured layer.
- the colour match of the repaired object and the original sample should be as close as possible from different observation and illumination angles, it is preferred to measure the colorimetric data of the object to be repaired at several angles and for the database to comprise data relating to the colorimetric data of the composition to be selected or determined at these angles. A number of three or more angles is preferred.
- FIG. 1 of the accompanying drawing shows a block diagram of a primer selection system according to the present invention. It includes a portable colour meter 1 of a type known as such.
- the colour meter 1 is used to measure the colour and to determine the L*,a*,b * , values of the coating of a car to be refinished for repair purposes.
- the colour meter 1 includes a sensor 2, a data processing unit 3 for processing the measured data, a display 4, which may for instance be a personal computer screen, for displaying the determined L*,a*,b* values to the user, and an interface 5 to communicate the L*,a*,b* values to a computer 6.
- the colour meter 1 is connected to the computer 6 via a connection 7, which may be a cable or may be wireless, e.g., via infrared transmission.
- the computer 6 serves, on the one hand, to control a colour mixing machine 9 via an interface 8 and, on the other, to communicate with a central data processing device 13 via a modem 10, a telephone line 11 , and a second modem 12.
- This connection may either be an internet connection or another network connection, or it may be just a temporary or permanent bilateral connection.
- the central data processing device 13 has access to a first database 14 comprising the L*,a*,b * values of a number of colour formulations, including all available primer formulations and a number of base coat formulations, and to a second database 15 comprising the K and S values of the primer formulations and of a number of pigment pastes for additional tinting of the standard primer formulations and / or basecoat toners, if so desired.
- the central data processing device 13 runs a program calculating for a set of pre- formulated primers the difference dEab between the measured L*,a*,b * values of the original car colour to be matched, on the one hand, and the L*,a*,b* values of a system comprising a layer of a base coat matching the original car colour, applied on the calculated layer of the primer, on the other.
- the minimum base coat layer thickness needed for complete hiding is calculated.
- the formulation giving the smallest minimum layer thickness is selected. If this minimum layer thickness is lower than a preset limit, the selected primer formulation is communicated to the computer 6, which passes the formulation on to the colour mixing machine 9.
- the colour mixing machine 9 is a standard apparatus known as such and is used to prepare primer formulations from a limited number of base paints and a set of pigment pastes. On the basis of the output data from the central data processing device 13 the colour mixing machine 9 mixes the required base paint with the required pigment pastes and delivers the selected primer formulation. If the minimum layer thickness is higher than the preset limit, the central data processing device 13 reads the K and S values of the selected primer from the second database 15, combines them with the .K and S values of one or more pigment pastes, calculates the L*,a*,b* values of a mixture of the selected primer formulation and the additional pigment paste, and subsequently calculates the minimum layer thickness needed for complete hiding.
- the formulation consisting of the selected primer formulation and the additional colourants is iteratively formulated in such way that the resulting minimum layer thickness falls below the preset limit. After passing the limit, the adapted formulation is communicated to the computer 6 and passed on to the colour mixing machine for production of the new primer formulation.
- Example 2 Comparative Examples A, B, and C
- the car door of a red car needs to be refinished after having been damaged.
- a base coat matching the original colour of the car is selected.
- the colour of the base coat is represented by the K and S values and the reflection spectrum according to the hiding Kubelka Munk model, given in Table 1.
- the used primer selection system also includes a computer having access to a database of K and S values corresponding to a set of toners.
- a database of K and S values corresponding to a set of toners On the basis of this database primers can be formulated.
- the database may for example include the following three toner formulations characterised by their K and S values.
- Example 2 a set of three red primers was formulated on the basis of the toners of Table 2.
- the first red primer formulation was a mixture of 60% of the white toner and 40% of the red toner.
- the second red primer was a mixture of 35% of the white toner and 65% of the red toner.
- the third red primer was a
- R t ( ⁇ ) (A + B) * ((A - B) - R a ( ⁇ ) ) e - 2BS( ⁇ )P - ((A + B) - R ⁇ ( ⁇ ) )*(A - B)
- the reflection values of the primer formulations were as shown in Table 3, wherein R W hite is the reflection of the white primer of Comparative Example A, R b iac k is the reflection of the black primer of Comparative Example B, and R grey is the reflection of the grey primer of Comparative Example C.
- R rec ⁇ , R re d2, and Rr ed 3 are the reflections of the primers of Example 2.
- the L*,a*,b* values can be calculated from the R t ( ⁇ ) values in a way readily known to the skilled man, as described in any standard reference book on colour measurement, e.g., as in Measuring Colour by R.W.G. Hunt, Chapter 2, 1987, Ellis Horwood Ltd., Chichester, ISBN 0-7458-0125-0, which is hereby incorporated by reference.
- dEab -I (dL 2 + da 2 + db 2 ) wherein dL* is the difference in L* values, da* is the difference in a* values, and db* is the difference in b* values.
- D the minimum base coat layer thickness D needed for complete hiding can be calculated for each of the primers. Complete hiding is defined as the degree of hiding giving a colour difference dEab ⁇ 0.1 in comparison with a layer of infinite thickness of the same base coat.
- Example 2 It was calculated in Example 2 that the first red primer would require a base coat layer thickness of 6.4 ⁇ m, whereas the second red primer would require a base coat layer thickness of 14.2 ⁇ m and primer 3 would require a base coat layer thickness of 16.4 ⁇ m. Subsequently, the first red primer was selected
- Comparative Example A it was calculated that the required minimum base coat layer thickness on a white primer was 16.1 ⁇ m. This means that about 2.5 times more base coat was needed for the same degree of hiding. The difference was even higher when compared with the black primer of Comparative Example B, which required a minimum base coat layer thickness of 18.8 ⁇ m.
- the grey primer of Comparative Example C required a minimum base coat layer thickness of 10.3 ⁇ m, still about 1.6 ⁇ m more than the base coat layer thickness when applying the method according to the invention.
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spectrometry And Color Measurement (AREA)
- Medicinal Preparation (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002551353A JP3739358B2 (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multilayer coating |
BR0116248-9A BR0116248A (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multilayer coating |
AU2961702A AU2961702A (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multi-layer coating |
EP01990512A EP1344032B1 (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multi-layer coating |
ES01990512T ES2223948T3 (en) | 2000-12-19 | 2001-12-04 | METHOD FOR SELECTING A FORMULATION FOR ONE OR MORE LAYERS OF A MULTI-COAT COATING. |
KR1020037005775A KR100823446B1 (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multi-layer coating |
DE60103931T DE60103931T2 (en) | 2000-12-19 | 2001-12-04 | METHOD FOR SELECTING A FORMULA FOR A LAYER OR SEVERAL LAYERS OF A MULTILAYER COATING |
AU2002229617A AU2002229617B2 (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multi-layer coating |
AT01990512T ATE269534T1 (en) | 2000-12-19 | 2001-12-04 | METHOD FOR SELECTING A FORMULA FOR ONE LAYER OR MULTIPLE LAYERS OF A MULTI-LAYER COATING |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00204620A EP1217346A1 (en) | 2000-12-19 | 2000-12-19 | Method for selecting a formulation for one or more layers of a multi-layer coating |
EP00204620.9 | 2000-12-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002050500A1 true WO2002050500A1 (en) | 2002-06-27 |
WO2002050500A9 WO2002050500A9 (en) | 2004-05-13 |
Family
ID=8172458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/014276 WO2002050500A1 (en) | 2000-12-19 | 2001-12-04 | Method for selecting a formulation for one or more layers of a multi-layer coating |
Country Status (13)
Country | Link |
---|---|
US (1) | US6905727B2 (en) |
EP (2) | EP1217346A1 (en) |
JP (1) | JP3739358B2 (en) |
KR (1) | KR100823446B1 (en) |
CN (1) | CN100348957C (en) |
AT (1) | ATE269534T1 (en) |
AU (2) | AU2961702A (en) |
BR (1) | BR0116248A (en) |
DE (1) | DE60103931T2 (en) |
ES (1) | ES2223948T3 (en) |
RU (1) | RU2276337C2 (en) |
WO (1) | WO2002050500A1 (en) |
ZA (1) | ZA200304721B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0219479D0 (en) * | 2002-08-21 | 2002-10-02 | Koninkl Philips Electronics Nv | Colour sampling |
US7519210B2 (en) * | 2004-09-09 | 2009-04-14 | Raphael Hirsch | Method of assessing localized shape and temperature of the human body |
US20090210182A1 (en) * | 2005-02-28 | 2009-08-20 | Orica Australia Pty Ltd | Opacity optimisation for paint topcoat/undercoat combination |
US8345252B2 (en) | 2005-04-25 | 2013-01-01 | X-Rite, Inc. | Method and system for enhanced formulation and visualization rendering |
US7944561B2 (en) | 2005-04-25 | 2011-05-17 | X-Rite, Inc. | Measuring an appearance property of a surface using a bidirectional reflectance distribution function |
WO2006116386A1 (en) * | 2005-04-25 | 2006-11-02 | X-Rite, Incorporated | Measuring an appearance property of a surface using a spatially under-sampled bidirectional reflectance distribution function |
US20070018906A1 (en) * | 2005-07-15 | 2007-01-25 | Visnovsky David W | Product selection based on color and appearance of decorative artifacts |
CN100409243C (en) * | 2005-11-15 | 2008-08-06 | 召信企业股份有限公司 | Computer aided regulation system for colored paint formula and its method |
EP1954411B1 (en) * | 2005-11-15 | 2013-02-20 | Akzo Nobel Coatings International BV | Process for preparation of a multilayer coating sheet |
KR101452481B1 (en) * | 2007-06-19 | 2014-10-23 | 삼성전자주식회사 | Appearance painting method for portable electronic device |
EP2513627B1 (en) * | 2009-12-18 | 2021-06-30 | Coatings Foreign IP Co. LLC | Method for coating measurement |
US20140242271A1 (en) * | 2011-09-30 | 2014-08-28 | Axalta Coating Systmes Ip Co., Llc | Method for matching color and appearance of coatings containing effect pigments |
US9849431B2 (en) | 2012-07-13 | 2017-12-26 | Ppg Industries Ohio, Inc. | System and method for automated production, application and evaluation of coating compositions |
US9816862B2 (en) * | 2013-03-14 | 2017-11-14 | Ppg Industries Ohio, Inc. | Systems and methods for texture analysis of a coated surface using multi-dimensional geometries |
JP6719965B2 (en) * | 2016-05-06 | 2020-07-08 | ダイハツ工業株式会社 | Painting condition setting method and program |
EP3605202B1 (en) * | 2018-07-31 | 2022-11-09 | Essilor International | Method and system for determining a lens of customized color |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552780A (en) * | 1983-09-27 | 1985-11-12 | Yoshiaki Abe | Multi-layer coating method based on differential spectral reflectance |
US4813000A (en) * | 1986-07-09 | 1989-03-14 | Jones-Blair Company | Computerized color matching |
WO1997043052A1 (en) * | 1996-05-13 | 1997-11-20 | E.I. Du Pont De Nemours And Company | Optimizing gray primer in multilayer coatings |
US5929998A (en) * | 1996-09-10 | 1999-07-27 | Herbert Gmbh | Method for matching a colour formulation |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59216659A (en) * | 1983-05-21 | 1984-12-06 | Toyota Motor Corp | Film forming method |
JP2975057B2 (en) * | 1990-06-13 | 1999-11-10 | 関西ペイント株式会社 | Approximate measurement method of opaque paint color of paint and toning test plate used in this method |
US5668633A (en) * | 1995-10-03 | 1997-09-16 | General Electric Company | Method and system for formulating a color match |
US5871827A (en) * | 1996-06-21 | 1999-02-16 | Ciba Specialty Chemicals Corporation | Finishes containing light interference pigments |
JP3986117B2 (en) * | 1997-05-22 | 2007-10-03 | 日本ペイント株式会社 | Toning device for automobile repair paint |
JPH11279408A (en) * | 1997-06-02 | 1999-10-12 | Dainippon Ink & Chem Inc | Production of aqueous resin, aqueous curable resin composition and water-based coating material |
US6108095A (en) * | 1999-08-27 | 2000-08-22 | General Electric Company | Method and system for determining a color formula to enable reproduction of a color standard on one or more production lines |
-
2000
- 2000-12-19 EP EP00204620A patent/EP1217346A1/en not_active Withdrawn
-
2001
- 2001-12-04 RU RU2003122225/28A patent/RU2276337C2/en active
- 2001-12-04 AU AU2961702A patent/AU2961702A/en active Pending
- 2001-12-04 CN CNB018208630A patent/CN100348957C/en not_active Expired - Fee Related
- 2001-12-04 EP EP01990512A patent/EP1344032B1/en not_active Expired - Lifetime
- 2001-12-04 WO PCT/EP2001/014276 patent/WO2002050500A1/en active IP Right Grant
- 2001-12-04 AT AT01990512T patent/ATE269534T1/en not_active IP Right Cessation
- 2001-12-04 KR KR1020037005775A patent/KR100823446B1/en not_active IP Right Cessation
- 2001-12-04 JP JP2002551353A patent/JP3739358B2/en not_active Expired - Fee Related
- 2001-12-04 ES ES01990512T patent/ES2223948T3/en not_active Expired - Lifetime
- 2001-12-04 AU AU2002229617A patent/AU2002229617B2/en not_active Ceased
- 2001-12-04 BR BR0116248-9A patent/BR0116248A/en not_active IP Right Cessation
- 2001-12-04 DE DE60103931T patent/DE60103931T2/en not_active Expired - Fee Related
- 2001-12-18 US US10/023,188 patent/US6905727B2/en not_active Expired - Fee Related
-
2003
- 2003-06-18 ZA ZA200304721A patent/ZA200304721B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552780A (en) * | 1983-09-27 | 1985-11-12 | Yoshiaki Abe | Multi-layer coating method based on differential spectral reflectance |
US4813000A (en) * | 1986-07-09 | 1989-03-14 | Jones-Blair Company | Computerized color matching |
WO1997043052A1 (en) * | 1996-05-13 | 1997-11-20 | E.I. Du Pont De Nemours And Company | Optimizing gray primer in multilayer coatings |
US5929998A (en) * | 1996-09-10 | 1999-07-27 | Herbert Gmbh | Method for matching a colour formulation |
Also Published As
Publication number | Publication date |
---|---|
EP1344032A1 (en) | 2003-09-17 |
DE60103931T2 (en) | 2005-06-23 |
AU2961702A (en) | 2002-07-01 |
KR20040016817A (en) | 2004-02-25 |
RU2276337C2 (en) | 2006-05-10 |
US20020138211A1 (en) | 2002-09-26 |
AU2002229617B2 (en) | 2006-01-05 |
JP3739358B2 (en) | 2006-01-25 |
KR100823446B1 (en) | 2008-04-18 |
DE60103931D1 (en) | 2004-07-22 |
RU2003122225A (en) | 2005-01-10 |
ATE269534T1 (en) | 2004-07-15 |
CN1481499A (en) | 2004-03-10 |
EP1344032B1 (en) | 2004-06-16 |
BR0116248A (en) | 2003-11-04 |
ZA200304721B (en) | 2004-08-18 |
CN100348957C (en) | 2007-11-14 |
ES2223948T3 (en) | 2005-03-01 |
JP2004516467A (en) | 2004-06-03 |
US6905727B2 (en) | 2005-06-14 |
EP1217346A1 (en) | 2002-06-26 |
WO2002050500A9 (en) | 2004-05-13 |
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