KR900009891A - 도전성 박판상 안료 - Google Patents

도전성 박판상 안료

Info

Publication number
KR900009891A
KR900009891A KR1019890018527A KR890018527A KR900009891A KR 900009891 A KR900009891 A KR 900009891A KR 1019890018527 A KR1019890018527 A KR 1019890018527A KR 890018527 A KR890018527 A KR 890018527A KR 900009891 A KR900009891 A KR 900009891A
Authority
KR
South Korea
Prior art keywords
conductive thin
thin pigment
pigment
conductive
thin
Prior art date
Application number
KR1019890018527A
Other languages
English (en)
Other versions
KR0136789B1 (ko
Inventor
디이터 브루크너 한스
에젤보른 라이너
Original Assignee
메르크 파텐트 게젤샤프트 미트 베슈랭크터 하프퉁
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6369280&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR900009891(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 메르크 파텐트 게젤샤프트 미트 베슈랭크터 하프퉁 filed Critical 메르크 파텐트 게젤샤프트 미트 베슈랭크터 하프퉁
Publication of KR900009891A publication Critical patent/KR900009891A/ko
Application granted granted Critical
Publication of KR0136789B1 publication Critical patent/KR0136789B1/ko

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • C09C2220/103—Wet methods, e.g. co-precipitation comprising a drying or calcination step after applying each layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/12743—Next to refractory [Group IVB, VB, or VIB] metal-base component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2989—Microcapsule with solid core [includes liposome]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Paints Or Removers (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
KR1019890018527A 1988-12-16 1989-12-14 도전성 박판상 안료 KR0136789B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842330A DE3842330A1 (de) 1988-12-16 1988-12-16 Leitfaehige plaettchenfoermige pigmente
DEP3842330.8 1988-12-16

Publications (2)

Publication Number Publication Date
KR900009891A true KR900009891A (ko) 1990-07-05
KR0136789B1 KR0136789B1 (ko) 1998-04-24

Family

ID=6369280

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890018527A KR0136789B1 (ko) 1988-12-16 1989-12-14 도전성 박판상 안료

Country Status (11)

Country Link
US (1) US5472640A (ko)
EP (1) EP0373575B2 (ko)
JP (1) JP2999491B2 (ko)
KR (1) KR0136789B1 (ko)
AU (1) AU626618B2 (ko)
BR (1) BR8906495A (ko)
CA (1) CA2005491A1 (ko)
DE (2) DE3842330A1 (ko)
ES (1) ES2053934T3 (ko)
FI (1) FI100599B (ko)
YU (1) YU235489A (ko)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5585037A (en) * 1989-08-02 1996-12-17 E. I. Du Pont De Nemours And Company Electroconductive composition and process of preparation
US5296168A (en) * 1989-08-03 1994-03-22 E. I. Du Pont De Nemours And Company Electroconductive particles and method for adjusting the isoelectric point thereof
JP3318338B2 (ja) * 1992-02-28 2002-08-26 東レ・ダウコーニング・シリコーン株式会社 導電性ポリオルガノシロキサン組成物の製造方法
DE4213747A1 (de) * 1992-04-25 1993-10-28 Merck Patent Gmbh Elektrisch leitfähige Pigmente
ES2096796T3 (es) * 1992-04-25 1997-03-16 Merck Patent Gmbh Pigmento conductor de la electricidad.
US5292551A (en) * 1992-06-29 1994-03-08 E. I. Du Pont De Nemours And Company Process for producing electroconductive powders
CA2138245A1 (en) * 1992-06-29 1994-01-06 Howard Wayne Jacobson Electroconductive material and process
JPH06145645A (ja) * 1992-11-06 1994-05-27 Nippon Muki Kagaku Kogyo Kk 紫外線遮断剤とその製造方法
US5512094A (en) * 1992-11-20 1996-04-30 E. I. Du Pont De Nemours And Company Metal oxide coated silica shells
USH1447H (en) * 1992-11-20 1995-06-06 E. I. Du Pont De Nemours And Company Coated silica shells
US5364566A (en) * 1993-02-12 1994-11-15 E. I. Du Pont De Nemours And Company Process for making electroconductive powders
DE4431829A1 (de) 1994-09-07 1996-03-14 Merck Patent Gmbh Leitfähige Pigmentzubereitung
DE4435301A1 (de) * 1994-10-01 1996-04-04 Merck Patent Gmbh Leitfähige Pigmente
DE4443048A1 (de) * 1994-12-05 1996-06-13 Merck Patent Gmbh Effektpulverlacke
DE19525503A1 (de) † 1995-07-13 1997-01-16 Basf Ag Goniochromatische Glanzpigmente auf Basis transparenter, nichtmetallischer, plättchenförmiger Substrate
DE19538295A1 (de) * 1995-10-14 1997-04-17 Basf Ag Goniochromatische Glanzpigmente mit siliciumhaltiger Beschichtung
DE19638708A1 (de) * 1996-09-21 1998-04-16 Merck Patent Gmbh Mehrschichtige Interferenzpigmente
DE19647539A1 (de) * 1996-11-16 1998-05-20 Merck Patent Gmbh Leitfähige Pigmente
DE59907330D1 (de) 1998-03-18 2003-11-20 Merck Patent Gmbh Leitfähige Pigmente
US6114079A (en) * 1998-04-01 2000-09-05 Eastman Kodak Company Electrically-conductive layer for imaging element containing composite metal-containing particles
DE19823867A1 (de) * 1998-05-28 1999-12-02 Merck Patent Gmbh Pigmentmischung
DE10046152A1 (de) 2000-09-15 2002-03-28 Merck Patent Gmbh Pigmentpräparation in Granulatform
DE10148055B4 (de) * 2000-09-29 2006-11-09 Merck Patent Gmbh Elektrisch leitfähiges Pigment
US6693657B2 (en) 2001-04-12 2004-02-17 Engelhard Corporation Additive for YAG laser marking
DE10243438A1 (de) 2002-09-18 2004-03-25 Merck Patent Gmbh Oberflächenmodifizierte Effektpigmente
TWI290118B (en) * 2002-10-09 2007-11-21 Entegris Inc High temperature, high strength, colorable materials for device processing systems
DE10346167A1 (de) * 2003-10-01 2005-05-25 Merck Patent Gmbh Glänzende schwarze Interferenzpigmente
US7187396B2 (en) * 2003-11-07 2007-03-06 Engelhard Corporation Low visibility laser marking additive
JP5584382B2 (ja) * 2004-05-17 2014-09-03 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング 透明導電性顔料
DE102004025373A1 (de) * 2004-05-24 2005-12-15 Merck Patent Gmbh Maschinenlesbares Sicherheitselement für Sicherheitserzeugnisse
DE502005002203D1 (de) * 2004-10-07 2008-01-24 Bene Fit Gmbh Kornartiger elektrisch leitfähiger Füllstoff für Kunststoffe
DE102004057918A1 (de) 2004-11-30 2006-06-01 Merck Patent Gmbh Laserkennzeichnung von Wertdokumenten
SI1966805T1 (sl) * 2005-12-19 2009-06-30 Kiian S P A Formulacija in postopek izdelave prevodnih filmskih elementov
US20080194719A1 (en) * 2006-09-05 2008-08-14 Fujifilm Hunt Chemicals U.S.A., Inc. Composition for forming a laser-markable coating and a laser-markable material containing organic absorption enhancement additives
JP5856737B2 (ja) * 2007-12-19 2016-02-10 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ Ｇｅｓｅｌｌｓｃｈａｆｔ ｍｉｔ ｂｅｓｃｈｒａｅｎｋｔｅｒ Ｈａｆｔｕｎｇ 高導電性の光学可変性顔料
KR20100114029A (ko) 2007-12-19 2010-10-22 메르크 파텐트 게엠베하 전기전도성 코어를 갖는, 강렬한 색채를 갖고/갖거나 광변성인 안료
DE102008060228A1 (de) 2008-12-04 2010-06-10 Merck Patent Gmbh Oberflächenmodifizierte Pigmente
DE102010012197A1 (de) 2010-03-19 2011-09-22 Merck Patent Gmbh Elektrisch leitfähige Fußbodenpflegemittel
DE102010052889A1 (de) 2010-12-01 2012-06-06 Merck Patent Gmbh Teilleitfähige dielektrische Beschichtungen und Gegenstände
DE102010052888A1 (de) 2010-12-01 2012-06-06 Merck Patent Gmbh Pigmente
RU2658842C2 (ru) 2013-06-17 2018-06-25 Мерк Патент Гмбх Прозрачные электрически полупроводящие интерферированные пигменты, имеющие высокую интенсивность цвета
AU2014283736B2 (en) † 2013-06-17 2017-07-20 Merck Patent Gmbh Transparent, optically variable interference pigments with electrical semi-conducting properties
WO2015067337A1 (de) 2013-11-07 2015-05-14 Merck Patent Gmbh Elektrisch leitfähiges pigment
DE102014018276A1 (de) 2014-12-12 2016-06-16 Merck Patent Gmbh Elektrisch leitfähige, farbige Interferenzpigmente
DE102014018275A1 (de) 2014-12-12 2016-06-16 Merck Patent Gmbh Nichtmetallische Pigmente mit metallischen Eigenschaften
JP6511329B2 (ja) * 2015-04-27 2019-05-15 三井金属鉱業株式会社 導電性粒子及びそれを含む導電性組成物
JP6577327B2 (ja) * 2015-10-16 2019-09-18 三井金属鉱業株式会社 導電性粒子及びそれを含む導電性組成物
DE102017011800A1 (de) * 2017-12-20 2019-06-27 Merck Patent Gmbh Effektpigmente
EP4221986A1 (en) 2020-10-01 2023-08-09 Basf Se Etpe laser marking

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438796A (en) * 1967-02-02 1969-04-15 Du Pont Aluminum-silica-aluminum flake pigments
DE3124746A1 (de) * 1981-06-24 1983-01-13 Basf Ag, 6700 Ludwigshafen Plaettchenfoermige pigmente der formel al(pfeil abwaerts)x(pfeil abwaerts)fe(pfeil abwaerts)2(pfeil abwaerts)-(pfeil abwaerts)x(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts), deren herstellung und verwendung
JPS5876461A (ja) * 1981-10-26 1983-05-09 メルク・パテント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 透明性着色顔料およびその製造法
DE3151354A1 (de) * 1981-12-24 1983-07-07 Merck Patent Gmbh, 6100 Darmstadt Perlglanzpigmente, verfahren zu ihrer herstellung und ihre verwendung
JPS6050813A (ja) * 1983-08-31 1985-03-20 触媒化成工業株式会社 プラスチック又は塗料配合用透光性導電性粉末素材
DE3535818A1 (de) * 1985-10-08 1987-04-09 Merck Patent Gmbh Glasur- und emailstabile perlglanzpigmente
IN165908B (ko) * 1985-10-25 1990-02-10 Merck Patent Gmbh
DE3617430A1 (de) * 1986-05-23 1987-11-26 Merck Patent Gmbh Perlglanzpigmente
DE3636156A1 (de) * 1986-10-24 1988-04-28 Basf Ag Plaettchenfoermige pigmente der allgemeinen formel mn(pfeil abwaerts)x(pfeil abwaerts)-al(pfeil abwaerts)y(pfeil abwaerts)fe(pfeil abwaerts)2(pfeil abwaerts)(pfeil abwaerts)-(pfeil abwaerts)(pfeil abwaerts)((pfeil abwaerts)(pfeil abwaerts)x(pfeil abwaerts)(pfeil abwaerts)+(pfeil abwaerts)(pfeil abwaerts)y(pfeil abwaerts)(pfeil abwaerts))(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts)
DE3731174A1 (de) * 1987-09-17 1989-03-30 Merck Patent Gmbh Glasur- und emailstabile perlglanzpigmente
US4917952A (en) * 1987-09-29 1990-04-17 Toda Kogyo Corp. Electroconductive iron oxide particles
US5236737A (en) * 1989-08-02 1993-08-17 E. I. Du Pont De Nemours And Company Electroconductive composition and process of preparation
US5068063A (en) * 1989-12-28 1991-11-26 E. I. Du Pont De Nemours And Company Non-carbon black containing conductive coating composition
US5104583A (en) * 1990-05-07 1992-04-14 E. I. Du Pont De Nemours And Company Light colored conductive electrocoat paint

Also Published As

Publication number Publication date
CA2005491A1 (en) 1990-06-16
YU235489A (en) 1991-04-30
KR0136789B1 (ko) 1998-04-24
ES2053934T3 (es) 1994-08-01
JPH02214782A (ja) 1990-08-27
EP0373575B2 (de) 1999-02-03
BR8906495A (pt) 1990-08-28
EP0373575B1 (de) 1993-01-13
DE58903290D1 (de) 1993-02-25
DE3842330A1 (de) 1990-06-21
FI896027A0 (fi) 1989-12-15
JP2999491B2 (ja) 2000-01-17
AU4678189A (en) 1990-06-21
EP0373575A1 (de) 1990-06-20
FI100599B (fi) 1998-01-15
AU626618B2 (en) 1992-08-06
US5472640A (en) 1995-12-05

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