FI80667C - Foerfarande och anordning foer tillverkning av mineralull. - Google Patents
Foerfarande och anordning foer tillverkning av mineralull. Download PDFInfo
- Publication number
- FI80667C FI80667C FI884072A FI884072A FI80667C FI 80667 C FI80667 C FI 80667C FI 884072 A FI884072 A FI 884072A FI 884072 A FI884072 A FI 884072A FI 80667 C FI80667 C FI 80667C
- Authority
- FI
- Finland
- Prior art keywords
- mineral material
- molten
- plasma
- spinning machine
- molten mineral
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000011490 mineral wool Substances 0.000 title claims description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 72
- 239000011707 mineral Substances 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 69
- 238000009987 spinning Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 30
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000012768 molten material Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 239000012159 carrier gas Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 239000004460 silage Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000155 melt Substances 0.000 description 8
- 238000010079 rubber tapping Methods 0.000 description 7
- 239000012467 final product Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
- C03B37/05—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices
- C03B37/055—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices by projecting onto and spinning off the outer surface of the rotating body
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/025—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by arc discharge or plasma heating
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S65/00—Glass manufacturing
- Y10S65/04—Electric heat
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Fibers (AREA)
- Furnace Details (AREA)
- Glass Compositions (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Processing Of Solid Wastes (AREA)
Claims (7)
1. Menetelmä mineraalivillan valmistamiseksi, jossa menetelmässä mineraaliraaka-ainetta (2) viedään sulatusyk- 5 sikköön (3), edullisesti kupoliuuniin, jossa mineraaliraa- ka-aine kuumennetaan siten, että sulaa mineraalimateriaa-lia (4) muodostuu sulatusyksiön pohjaan, minkä jälkeen sula mineraalimateriaali lasketaan pois sulatusyksiköstä, lisäkuumennetaan ja viedään vähintään yhtä laskukourua (8, 10 9) pitkin linkokoneeseen (10), jossa mineralimateriaali saatetaan kuitumaiseen muotoon, tunnettu siitä, että mainittu lisäkuumennus suoritetaan kuumentamalla sula mineraalimateriaali (4') sähköplasman avulla, jolloin plasmakuumennus suoritetaan laskukourussa (9) sulan mine-15 raalimateriaalin (4') virratessa laskukourussa, jotta sulan mineraalimateriaalin lämpötila saataisiin nopeasti säädetyksi ja jotta sula mineraalimateriaali saataisiin tasaisessa lämpötilassa viedyksi linkokoneeseen (10).
2. Patenttivaatimuksen 1 mukainen menetelmä, 20 tunnettu siitä, että mineraalimateriaalin lämpötila nostetaan plasmakuumentamisen avulla noin 20 - 150°C.
3. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että plasmakuumentamisen yhteydessä käytetään inerttiä suojakaasua, niin että plasmaenergia 25 saadaan tehokkaasti siirretyksi mineraalimateriaaliin.
4. Jonkin edellisen patenttivaatimuksen mukainen menetelmä, tunnettu siitä, että käytetään TA ("transferred arc")-tyyppistä plasmavälineistöä.
5. Laite mineraalivillan valmistamiseksi, joka lai-30 te käsittää syöttölaitteen (1), sulatusyksikön (3), edullisesti kupoliuunin, kuljetuslaitteen (7) käsittäen las-kukourun (8, 9), lisäkuumennuslaitteen (11) ja linkokoneen (10), jossa laitteessa syöttölaite on tarkoitettu mineraa-liraaka-aineen (2) syöttämiseksi sulatusyksikköön, sula- 35 tusyksikkö on mineraaliraaka-aineen kuumentamiseksi sulak- 12 80667 si mineraalimateriaaliksi (4), kuljetuslaite on sulan mi-neraalimateriaalin kuljettamiseksi sulatusyksiköstä linko-koneeseen, lisäkuumennuslaite on sulatusyksiköstä lasketun sulan mineraalimateriaalin (4') lisäkuumentamista varten 5 ennen kuin tämä syötetään linkokoneeseen ja linkokone on tarkoitettu mineraalimateriaalin saattamiseksi kuitumuo-toon, tunnettu siitä, että lisäkuumennuslaitteen muodostaa plasmakuumennuslaite (11), joka on sovitettu laskukouruun (9) sulan mineraalimateriaalin (4' ) kuumenta-10 miseksi laskukourussa.
6. Patenttivaatimuksen 5 mukainen laite, tunnettu siitä, että plasmakuumennuslaite (11) käsittää negatiivisen plasmaelektrodin (18), joka on järjestetty laskukourussa (9) olevan sulan materiaalin yläpuolelle, ja 15 positiivisen plasmaelektrodin, joka on järjestetty sulan materiaalin alle ollen suorassa kosketuksessa tämän kanssa, lämpötilamittarin (21) sulan mineraalimateriaalin lämpötilan mittaamiseksi välittömästi ennen kuin se viedään linkokoneeseen (10), joka lämpötilamittari on kytketty 20 plasmaenergian syöttölaitteeseen (20), jota ohjaa tämän ja lämpötilamittarin väliin kytketty säädin (22).
7. Patenttivaatimuksen 6 mukainen laite, tunnettu siitä, että laskukouru (9) on kipattava, sen pohjassa on tila (16) rautapisaroiden erottamista varten 25 ja se on varustettu taaksepäin suunnatulla poistoaukolla (17) sulan raudan (5') poistamista varten. li
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI884072A FI80667C (fi) | 1988-09-02 | 1988-09-02 | Foerfarande och anordning foer tillverkning av mineralull. |
| HU895042A HUT60982A (en) | 1988-09-02 | 1989-08-25 | Process and equipment for producing mineral cotton |
| PCT/FI1989/000158 WO1990002711A1 (en) | 1988-09-02 | 1989-08-25 | A method and an apparatus for producing mineral wool |
| KR1019900700905A KR900701671A (ko) | 1988-09-02 | 1989-08-25 | 광물면의 생성 방법 및 장치 |
| EP89909776A EP0432193A1 (en) | 1988-09-02 | 1989-08-25 | A method and an apparatus for producing mineral wool |
| AU41992/89A AU628859B2 (en) | 1988-09-02 | 1989-08-25 | Production of mineral wool |
| US07/659,376 US5123941A (en) | 1988-09-02 | 1989-08-25 | Apparatus for producing mineral wool |
| CH1564/90A CH677109A5 (fi) | 1988-09-02 | 1989-08-25 | |
| JP1509433A JPH04500498A (ja) | 1988-09-02 | 1989-08-25 | 鉱物綿を製造するための方法及びその装置 |
| CN89106738A CN1015705B (zh) | 1988-09-02 | 1989-09-01 | 制造矿物棉的方法和装置 |
| DD89332308A DD284665A5 (de) | 1988-09-02 | 1989-09-01 | Verfahren und vorrichtung zur herstellung von mineralwolle |
| DK011691A DK11691A (da) | 1988-09-02 | 1991-01-23 | Fremgangsmaade og apparat til fremstilling af mineralsk uld |
| BG093913A BG60050B2 (bg) | 1988-09-02 | 1991-02-25 | Метод и апарат за производство на минерална вата |
| NO91910751A NO910751L (no) | 1988-09-02 | 1991-02-26 | Fremgangsmaate og anlegg for fremstilling av mineralull. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI884072A FI80667C (fi) | 1988-09-02 | 1988-09-02 | Foerfarande och anordning foer tillverkning av mineralull. |
| FI884072 | 1988-09-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI884072A0 FI884072A0 (fi) | 1988-09-02 |
| FI80667B FI80667B (fi) | 1990-03-30 |
| FI80667C true FI80667C (fi) | 1990-07-10 |
Family
ID=8526996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI884072A FI80667C (fi) | 1988-09-02 | 1988-09-02 | Foerfarande och anordning foer tillverkning av mineralull. |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5123941A (fi) |
| EP (1) | EP0432193A1 (fi) |
| JP (1) | JPH04500498A (fi) |
| KR (1) | KR900701671A (fi) |
| CN (1) | CN1015705B (fi) |
| AU (1) | AU628859B2 (fi) |
| BG (1) | BG60050B2 (fi) |
| CH (1) | CH677109A5 (fi) |
| DD (1) | DD284665A5 (fi) |
| DK (1) | DK11691A (fi) |
| FI (1) | FI80667C (fi) |
| HU (1) | HUT60982A (fi) |
| WO (1) | WO1990002711A1 (fi) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE464521B (sv) * | 1989-09-06 | 1991-05-06 | Aga Ab | Saett och anordning foer att destruera kasserad mineralull och aateranvaenda denna foer framstaellning av mineralull |
| AU652795B2 (en) * | 1991-01-18 | 1994-09-08 | Isover Saint-Gobain | Process and device for obtaining mineral fibres |
| US5845645A (en) * | 1993-05-14 | 1998-12-08 | Bonutti; Peter M. | Method of anchoring a suture |
| CN1050587C (zh) * | 1996-04-12 | 2000-03-22 | 北京欣景装饰保温材料有限公司 | 制备玻璃棉制品的工艺方法 |
| US5718717A (en) | 1996-08-19 | 1998-02-17 | Bonutti; Peter M. | Suture anchor |
| FR2764877B1 (fr) | 1997-06-20 | 1999-09-03 | Europlasma | Procede de vitrification d'un materiau pulverulent et dispositif pour la mise en oeuvre de ce procede |
| HU224287B1 (hu) * | 1997-12-02 | 2005-07-28 | Rockwool International A/S | Eljárás mesterséges üvegszálak előállítására |
| US5953755A (en) * | 1997-12-04 | 1999-09-21 | Barylski; Gary S. | Necktie holder and method of making same |
| US6045551A (en) | 1998-02-06 | 2000-04-04 | Bonutti; Peter M. | Bone suture |
| US6447516B1 (en) | 1999-08-09 | 2002-09-10 | Peter M. Bonutti | Method of securing tissue |
| US6368343B1 (en) | 2000-03-13 | 2002-04-09 | Peter M. Bonutti | Method of using ultrasonic vibration to secure body tissue |
| US6635073B2 (en) | 2000-05-03 | 2003-10-21 | Peter M. Bonutti | Method of securing body tissue |
| US7094251B2 (en) | 2002-08-27 | 2006-08-22 | Marctec, Llc. | Apparatus and method for securing a suture |
| US9138222B2 (en) | 2000-03-13 | 2015-09-22 | P Tech, Llc | Method and device for securing body tissue |
| CN2420276Y (zh) * | 2000-03-16 | 2001-02-21 | 赵善茂 | 一种用于制造岩棉纤维的加热导流槽装置 |
| US6719765B2 (en) | 2001-12-03 | 2004-04-13 | Bonutti 2003 Trust-A | Magnetic suturing system and method |
| US9155544B2 (en) | 2002-03-20 | 2015-10-13 | P Tech, Llc | Robotic systems and methods |
| US7497864B2 (en) | 2003-04-30 | 2009-03-03 | Marctec, Llc. | Tissue fastener and methods for using same |
| CN1325408C (zh) * | 2003-07-24 | 2007-07-11 | 深圳俄金碳材料科技有限公司 | 矿石熔融的感应加热法及装置 |
| US20080039873A1 (en) | 2004-03-09 | 2008-02-14 | Marctec, Llc. | Method and device for securing body tissue |
| US9173647B2 (en) | 2004-10-26 | 2015-11-03 | P Tech, Llc | Tissue fixation system |
| US9463012B2 (en) | 2004-10-26 | 2016-10-11 | P Tech, Llc | Apparatus for guiding and positioning an implant |
| US9271766B2 (en) | 2004-10-26 | 2016-03-01 | P Tech, Llc | Devices and methods for stabilizing tissue and implants |
| US20060089646A1 (en) | 2004-10-26 | 2006-04-27 | Bonutti Peter M | Devices and methods for stabilizing tissue and implants |
| US9089323B2 (en) | 2005-02-22 | 2015-07-28 | P Tech, Llc | Device and method for securing body tissue |
| US11253296B2 (en) | 2006-02-07 | 2022-02-22 | P Tech, Llc | Methods and devices for intracorporeal bonding of implants with thermal energy |
| US8496657B2 (en) | 2006-02-07 | 2013-07-30 | P Tech, Llc. | Methods for utilizing vibratory energy to weld, stake and/or remove implants |
| US11278331B2 (en) | 2006-02-07 | 2022-03-22 | P Tech Llc | Method and devices for intracorporeal bonding of implants with thermal energy |
| US7967820B2 (en) | 2006-02-07 | 2011-06-28 | P Tech, Llc. | Methods and devices for trauma welding |
| US11246638B2 (en) | 2006-05-03 | 2022-02-15 | P Tech, Llc | Methods and devices for utilizing bondable materials |
| US7562540B2 (en) * | 2006-06-16 | 2009-07-21 | Green Material Corporation | Fiberizing device for producing fibers from molten waste |
| US8617185B2 (en) | 2007-02-13 | 2013-12-31 | P Tech, Llc. | Fixation device |
| EP2400899A4 (en) | 2009-02-24 | 2015-03-18 | P Tech Llc | METHODS AND DEVICES FOR USING RELATED MATERIALS |
| CN101891378B (zh) * | 2010-06-29 | 2012-06-20 | 北京北科新锐科技发展有限责任公司 | 利用炼铁炉渣生产矿渣棉的设备和方法 |
| US8852693B2 (en) | 2011-05-19 | 2014-10-07 | Liquipel Ip Llc | Coated electronic devices and associated methods |
| CN103836911B (zh) * | 2012-11-20 | 2016-04-06 | 维克特新材料江苏有限公司 | 冲天炉放铁水系统 |
| US10076377B2 (en) | 2013-01-05 | 2018-09-18 | P Tech, Llc | Fixation systems and methods |
| US10058393B2 (en) | 2015-10-21 | 2018-08-28 | P Tech, Llc | Systems and methods for navigation and visualization |
| US10690342B2 (en) * | 2016-11-17 | 2020-06-23 | Billion Sung Hoon Zorh | Apparatus for spraying cooling water, apparatus and method for manufacturing mineral fiber |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8005400L (sv) * | 1980-07-25 | 1982-01-26 | Leif Bjorklund | Sett och anordning vid framstellning av en smelta |
| US4492594A (en) * | 1984-01-03 | 1985-01-08 | Ppg Industries, Inc. | Method and apparatus for liquefying material with retainer means |
| FR2572390B1 (fr) * | 1984-10-30 | 1986-12-19 | Saint Gobain Isover | Perfectionnements a l'alimentation en materiau etirable dans les techniques de production de fibres minerales |
| FI72502C (fi) * | 1984-12-21 | 1987-06-08 | Outokumpu Oy | Saett och anordning foer framstaellning av vaermebestaendigt och/eller eldbestaendigt fibermaterial. |
| SE451714B (sv) * | 1985-09-02 | 1987-10-26 | Aga Ab | Anordning for framstellning av mineralull i en spinnmaskin |
| US4668271A (en) * | 1986-01-02 | 1987-05-26 | Ppg Industries, Inc. | Ablation melting with thermal protection |
| US4671765A (en) * | 1986-02-19 | 1987-06-09 | Ppg Industries, Inc. | Burner design for melting glass batch and the like |
| DK222686D0 (da) * | 1986-05-14 | 1986-05-14 | Rockwool Int | Mineraluldsfremstilling |
-
1988
- 1988-09-02 FI FI884072A patent/FI80667C/fi not_active IP Right Cessation
-
1989
- 1989-08-25 WO PCT/FI1989/000158 patent/WO1990002711A1/en not_active Application Discontinuation
- 1989-08-25 HU HU895042A patent/HUT60982A/hu unknown
- 1989-08-25 EP EP89909776A patent/EP0432193A1/en not_active Ceased
- 1989-08-25 CH CH1564/90A patent/CH677109A5/de not_active IP Right Cessation
- 1989-08-25 US US07/659,376 patent/US5123941A/en not_active Expired - Fee Related
- 1989-08-25 AU AU41992/89A patent/AU628859B2/en not_active Ceased
- 1989-08-25 JP JP1509433A patent/JPH04500498A/ja active Pending
- 1989-08-25 KR KR1019900700905A patent/KR900701671A/ko not_active Application Discontinuation
- 1989-09-01 DD DD89332308A patent/DD284665A5/de not_active IP Right Cessation
- 1989-09-01 CN CN89106738A patent/CN1015705B/zh not_active Expired
-
1991
- 1991-01-23 DK DK011691A patent/DK11691A/da not_active Application Discontinuation
- 1991-02-25 BG BG093913A patent/BG60050B2/bg unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU628859B2 (en) | 1992-09-24 |
| CH677109A5 (fi) | 1991-04-15 |
| US5123941A (en) | 1992-06-23 |
| FI80667B (fi) | 1990-03-30 |
| JPH04500498A (ja) | 1992-01-30 |
| CN1040569A (zh) | 1990-03-21 |
| HU895042D0 (en) | 1991-08-28 |
| BG60050B2 (bg) | 1993-08-30 |
| DD284665A5 (de) | 1990-11-21 |
| WO1990002711A1 (en) | 1990-03-22 |
| EP0432193A1 (en) | 1991-06-19 |
| KR900701671A (ko) | 1990-12-04 |
| HUT60982A (en) | 1992-11-30 |
| FI884072A0 (fi) | 1988-09-02 |
| AU4199289A (en) | 1990-04-02 |
| DK11691A (da) | 1991-02-06 |
| DK11691D0 (da) | 1991-01-23 |
| CN1015705B (zh) | 1992-03-04 |
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