EP0910675A1 - Warmband aus stahl und verfahren zu seiner herstellung - Google Patents
Warmband aus stahl und verfahren zu seiner herstellungInfo
- Publication number
- EP0910675A1 EP0910675A1 EP97931775A EP97931775A EP0910675A1 EP 0910675 A1 EP0910675 A1 EP 0910675A1 EP 97931775 A EP97931775 A EP 97931775A EP 97931775 A EP97931775 A EP 97931775A EP 0910675 A1 EP0910675 A1 EP 0910675A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot strip
- steel
- hot
- less
- temperature
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 10
- 239000011572 manganese Substances 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005246 galvanizing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 229910001568 polygonal ferrite Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Definitions
- the invention relates to a hot strip of steel of high strength which is at most 5 mm thick and to a method for its production.
- Hot strip means hot-rolled strip.
- hot strip is only manufactured up to strengths of around 800 N / mm 2 . These are thermomechanically rolled micro-alloyed steels. For applications that require additional strengths, soft hot strip is used and the strength required on the component is set by a subsequent heat treatment. For the thickness range below 2.0 mm, additional cold rolling is usually required to set the desired thickness. The required strength is also set in this case by a suitable heat treatment.
- a high-strength and tough steel with good machinability which consists of 0.005 to 0.3% C, 0.3 to 2.5% Mn, up to 1.5% Si and at least one carbide and nitride former the group contains Nb, V, Ti and Zr in amounts of up to 0.1%, up to 0.15%, up to 0.3% and 0.3% respectively.
- this steel is quenched in such a way that it contains 5 to 65% ferrite, the remainder being martensite.
- the production of wires and rods is particularly important.
- AI From GB 2 195 658 AI are forgings made of steel with 0.01 to 0.20% C, up to 1.0% Si, 0.5 to 2.25% Mn, up to 1.5% Cr, up to 0, 05% Ti, up to 0.10% Nb, 0.005 to 0.015% N and up to 0.06% AI known.
- the cooling of the steel from the austenite area should be controlled so that the structure is fully martensitic.
- carbon contents below 0.10% and silicon contents above 0.17% are disclosed.
- the sulfur content is relatively high at over 0.01%.
- the steels known from EP 0 072 867 AI also have carbon contents below 0.10% and silicon contents above 0.15%. After broken cooling, the hot strip has a dual-phase structure made of polygonal ferrite and a mixture of pearlite and bainite.
- the hot strip known from DE 30 07 560 AI is cooled after hot rolling at a cooling rate of 1 K / s or faster to produce a dual-phase structure made of ferrite and martensite.
- carbon contents in the range of 0.02 to 0.09% are recommended.
- the preferred silicon content is relatively high at 1.0%.
- the invention has for its object a hot strip with tensile strength values above 800 N / mm 2 and at the same time good cold formability in the thickness range ⁇ . 5 mm.
- a hot strip with a thickness of less than 5 mm, in particular less than 2 mm is proposed according to the invention, which has a tensile strength of 800 to 1400 N / mm 2 , from a steel of the following composition (in mass%):
- Remainder iron and unavoidable impurities including up to 0.015% phosphorus and up to 0.003% sulfur, and martensitic structure with less than 5% in total of other structural components.
- the steel can optionally additionally contain at least one of the following elements in mass%: up to 1.0% chromium, up to 0.1% copper, up to 0.5% molybdenum, up to 0.1% nickel, up to 0.009% nitrogen.
- Carbon can preferably be contained from 0.08 to 0.15%, manganese from 1.75 to 1.90%, chromium from 0.5 to 0.6% and nitrogen from 0.005 to 0.009%.
- a method for producing hot strip with a final thickness of less than 5 mm, in particular less than 2 mm, from a steel of the claimed composition with tensile strength values above 800 N / mm 2 comprises the following measures:
- a slab is heated to 1000 to 1300 ° C, pre-rolled in the temperature range from 950 to 1150 ° C and finish-rolled at a final rolling temperature above Ar3, the hot strip produced in this way is heated to a coiling temperature in the range from 20 ° C to below the martensite start temperature for conversion cooled and coiled into a martensitic structure with a total content of other structural components of less than 5%.
- the Ar3 temperature can be estimated using the following equation:
- Ar3 910-310x (% C) -80x (% Mn) -20x (% Cu) -15x (% Cr) -55x (% Ni) -80x (% Mo)
- the martensite start temperature Ms can be estimated using the following equation:
- Ms 500-300x (% C) -33x (% Mn) -22x (% Cr) -17x (% Ni) -11x (% Si) -11x (% Mo>
- the tensile strength of the hot strip is preferably set to a value in the range from 800 to 1400 N / mm 2 by appropriate selection of the reel temperature within the aforementioned temperature range.
- the hot strip can be hot-dip galvanized to become more corrosion-resistant. Easily cold-formable, high-strength galvanized sheets are preferred for mechanically highly stressed components in automobile construction, for example for side impact beams and bumpers.
- the steel according to the invention achieves high strength without expensive alloying elements and without annealing treatment as is the case with known steels.
- a steel with 0.15% C, 0.01% Si, 1.77% Mn, 0.014% P, 0.003% S, 0.028% Al, 0.0043% N, 0.526% Cr, 0.017% Cu, 0.003% Mo , 0.027% Ni, remainder Fe was cast into a slab.
- the slab was reduced to approx. Warmed up to 1250 ° C, at approx. Pre-rolled at 1120 ° C and rolled to a final thickness of 2 mm at a final temperature of 840 ° C, then cooled and coiled at 50 ° C. This creates a structure with more than 95% martensite.
- the yield strength reached values of 1120 N / mm 2 and the tensile strength values of 1350 N / mm 2 with elongation values A B0 to 11.1%.
- Example 1 A steel with the same analysis as in Example 1 was processed into 3.5 mm thick hot strip. The data are reported in Table 1. The strength values are significantly higher when reeling instead of over 400 ° C to 95 ° C. Table 1
- the hot strip can be hot-dip galvanized into the final shape before cold forming.
- the martensite is left on by the heat treatment cycle during galvanizing.
- tensile strengths in the range of 1200 - 1400 N / mm 2 , depending on the heat treatment cycle, tensile strengths between 800 and 1100 N / mm 2 are established during galvanizing.
- Table 4 shows the corresponding data for 1.4 mm thick
- Thick rolling conditions tensile test longitudinal tensile test: transverse mm
- V2 ET HT Rp0.2 Rm Rp0.2 / A80 Agl A80 Rp0.2 Rm Rp0.2 / A80 Agl A80 x ° C ° C ° CN / mm 2 N / mm 2 Rm%% Rm N / mm 2 N / mm 2 Rm%% Rm
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19628135 | 1996-07-12 | ||
DE19628135 | 1996-07-12 | ||
DE19719546A DE19719546C2 (de) | 1996-07-12 | 1997-05-09 | Warmband aus Stahl und Verfahren zu seiner Herstellung |
DE19719546 | 1997-05-09 | ||
PCT/EP1997/003541 WO1998002589A1 (de) | 1996-07-12 | 1997-07-04 | Warmband aus stahl und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0910675A1 true EP0910675A1 (de) | 1999-04-28 |
EP0910675B1 EP0910675B1 (de) | 2004-10-06 |
Family
ID=26027441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931775A Expired - Lifetime EP0910675B1 (de) | 1996-07-12 | 1997-07-04 | Warmband aus stahl und verfahren zu seiner herstellung |
Country Status (12)
Country | Link |
---|---|
US (1) | US6284063B1 (de) |
EP (1) | EP0910675B1 (de) |
CN (1) | CN1089811C (de) |
AT (1) | ATE278811T1 (de) |
BR (1) | BR9710285A (de) |
CA (1) | CA2260231A1 (de) |
CZ (1) | CZ6999A3 (de) |
ES (1) | ES2230613T3 (de) |
HU (1) | HU220900B1 (de) |
PL (1) | PL185228B1 (de) |
TR (1) | TR199900053T2 (de) |
WO (1) | WO1998002589A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5393617A (en) * | 1993-10-08 | 1995-02-28 | Electro Energy, Inc. | Bipolar electrochmeical battery of stacked wafer cells |
US6312536B1 (en) * | 1999-05-28 | 2001-11-06 | Kabushiki Kaisha Kobe Seiko Sho | Hot-dip galvanized steel sheet and production thereof |
FI114484B (fi) * | 2002-06-19 | 2004-10-29 | Rautaruukki Oyj | Kuumavalssattu nauhateräs ja sen valmistusmenetelmä |
CN1318630C (zh) * | 2004-04-13 | 2007-05-30 | 王洪珂 | 高强度包装钢带及其制造工艺 |
CN100439543C (zh) * | 2006-03-24 | 2008-12-03 | 宝山钢铁股份有限公司 | 热轧超高强度马氏体钢及其制造方法 |
US7846275B2 (en) * | 2006-05-24 | 2010-12-07 | Kobe Steel, Ltd. | High strength hot rolled steel sheet having excellent stretch flangeability and its production method |
ATE432376T1 (de) * | 2006-10-30 | 2009-06-15 | Thyssenkrupp Steel Ag | Verfahren zum herstellen von stahl-flachprodukten aus einem mit bor mikrolegierten mehrphasenstahl |
EP1918405B1 (de) * | 2006-10-30 | 2009-05-27 | ThyssenKrupp Steel AG | Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl |
ATE432372T1 (de) * | 2006-10-30 | 2009-06-15 | Thyssenkrupp Steel Ag | Verfahren zum herstellen von stahl-flachprodukten aus einem ein komplexphasen-gefüge bildenden stahl |
DE502006003832D1 (de) * | 2006-10-30 | 2009-07-09 | Thyssenkrupp Steel Ag | Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Aluminium legierten Mehrphasenstahl |
PL1918403T3 (pl) * | 2006-10-30 | 2009-10-30 | Thyssenkrupp Steel Ag | Sposób wytwarzania płaskich produktów stalowych ze stali tworzącej strukturę martenzytyczną |
CN101781735B (zh) * | 2009-01-16 | 2011-04-13 | 宝山钢铁股份有限公司 | 抗拉强度≥1000MPa的经济性高强度捆带钢及其制造方法 |
CN102328191B (zh) * | 2011-10-19 | 2013-08-28 | 无锡市锡州冷拉型钢有限公司 | 一种c型槽钢的生产工艺 |
IN2014CN04908A (de) | 2011-11-28 | 2015-09-18 | Arcelormittal Lnvestigacion Y Desarrollo S L | |
CN102864377B (zh) * | 2012-09-10 | 2015-05-20 | 山西太钢不锈钢股份有限公司 | 一种热轧带钢及其制造方法 |
WO2016100839A1 (en) | 2014-12-19 | 2016-06-23 | Nucor Corporation | Hot rolled light-gauge martensitic steel sheet and method for making the same |
EP3814536A1 (de) * | 2018-06-26 | 2021-05-05 | Tata Steel Nederland Technology B.V. | Kaltgewalzter martensitischer stahl mit hoher festigkeit und hoher biegbarkeit und verfahren zur herstellung davon |
KR102209552B1 (ko) * | 2018-12-19 | 2021-01-28 | 주식회사 포스코 | 구멍확장성이 우수한 고강도 열연강판 및 그 제조방법 |
EP3921448A4 (de) * | 2019-02-08 | 2022-05-04 | Nucor Corporation | Extrem wetterfester baustahl und walzen desselben mit hoher reibung |
CN112522580A (zh) * | 2019-09-19 | 2021-03-19 | 宝山钢铁股份有限公司 | 一种马氏体钢带及其制造方法 |
KR102404770B1 (ko) * | 2019-12-20 | 2022-06-07 | 주식회사 포스코 | 항복비가 우수한 고강도 열연강판 및 그 제조방법 |
CN113308648B (zh) * | 2021-05-14 | 2022-11-15 | 唐山钢铁集团高强汽车板有限公司 | 一种冷轧马氏体钢基板及其生产方法 |
CN113528932A (zh) * | 2021-05-31 | 2021-10-22 | 唐山钢铁集团高强汽车板有限公司 | 一种马氏体钢板及其制备方法 |
Family Cites Families (13)
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AU527097B2 (en) | 1979-01-12 | 1983-02-17 | Nippon Steel Corporation | Artifically aged low yield to tensile strength ratio high strength steel sheet |
JPS55131168A (en) * | 1979-03-30 | 1980-10-11 | Sumitomo Metal Ind Ltd | Manufacture of high tensile alloyed zinc-plated steel sheet |
DE3007560A1 (de) | 1980-02-28 | 1981-09-03 | Kawasaki Steel Corp., Kobe, Hyogo | Verfahren zum herstellen von warmgewalztem blech mit niedriger streckspannung, hoher zugfestigkeit und ausgezeichnetem formaenderungsvermoegen |
JPS5719322A (en) * | 1980-07-08 | 1982-02-01 | Nippon Steel Corp | Improvement of sulfide stress corrosion cracking of low alloy steel |
US4406713A (en) | 1981-03-20 | 1983-09-27 | Kabushiki Kaisha Kobe Seiko Sho | Method of making high-strength, high-toughness steel with good workability |
JPS58136716A (ja) | 1982-01-28 | 1983-08-13 | Nippon Steel Corp | 加工用強高度低降伏比複合組織熱延鋼板の製造方法 |
US4830686A (en) * | 1984-04-12 | 1989-05-16 | Kawasaki Steel Corporation | Low yield ratio high-strength annealed steel sheet having good ductility and resistance to secondary cold-work embrittlement |
DE3440752A1 (de) * | 1984-11-08 | 1986-05-22 | Thyssen Stahl AG, 4100 Duisburg | Verfahren zur herstellung von warmband mit zweiphasen-gefuege |
GB8621903D0 (en) | 1986-09-11 | 1986-10-15 | British Steel Corp | Production of steel |
JP2627164B2 (ja) | 1988-02-03 | 1997-07-02 | 新日本製鐵株式会社 | 耐亜鉛めっき割れ性に優れた溶接構造物の製造方法 |
JP2546070B2 (ja) * | 1990-12-25 | 1996-10-23 | 日本鋼管株式会社 | 車輛用ドアインパクトバー用高強度電縫鋼管およびその製造方法 |
JP3061218B2 (ja) * | 1991-12-26 | 2000-07-10 | 株式会社神戸製鋼所 | 高張力熱間圧延鋼板の製造方法 |
CA2186476C (en) * | 1995-01-26 | 2001-01-16 | Hiroshi Tamehiro | Weldable high strength steel having excellent low temperature toughness |
-
1997
- 1997-07-04 TR TR1999/00053T patent/TR199900053T2/xx unknown
- 1997-07-04 CZ CZ9969A patent/CZ6999A3/cs unknown
- 1997-07-04 WO PCT/EP1997/003541 patent/WO1998002589A1/de active IP Right Grant
- 1997-07-04 PL PL97331212A patent/PL185228B1/pl unknown
- 1997-07-04 CA CA002260231A patent/CA2260231A1/en not_active Abandoned
- 1997-07-04 AT AT97931775T patent/ATE278811T1/de not_active IP Right Cessation
- 1997-07-04 EP EP97931775A patent/EP0910675B1/de not_active Expired - Lifetime
- 1997-07-04 ES ES97931775T patent/ES2230613T3/es not_active Expired - Lifetime
- 1997-07-04 BR BR9710285A patent/BR9710285A/pt not_active IP Right Cessation
- 1997-07-04 HU HU9903306A patent/HU220900B1/hu not_active IP Right Cessation
- 1997-07-04 CN CN97196345A patent/CN1089811C/zh not_active Expired - Lifetime
- 1997-07-04 US US09/214,480 patent/US6284063B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9802589A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1089811C (zh) | 2002-08-28 |
BR9710285A (pt) | 1999-08-17 |
HUP9903306A2 (hu) | 2000-02-28 |
EP0910675B1 (de) | 2004-10-06 |
CZ6999A3 (cs) | 1999-10-13 |
TR199900053T2 (xx) | 1999-03-22 |
PL331212A1 (en) | 1999-07-05 |
HUP9903306A3 (en) | 2000-05-29 |
ES2230613T3 (es) | 2005-05-01 |
HU220900B1 (en) | 2002-06-29 |
PL185228B1 (pl) | 2003-04-30 |
WO1998002589A1 (de) | 1998-01-22 |
CN1225141A (zh) | 1999-08-04 |
ATE278811T1 (de) | 2004-10-15 |
CA2260231A1 (en) | 1998-01-22 |
US6284063B1 (en) | 2001-09-04 |
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