DE69705993T2 - Beizen von rostfreiem Stahl mit Wasserstoffperoxid enthaltender Lösung - Google Patents
Beizen von rostfreiem Stahl mit Wasserstoffperoxid enthaltender LösungInfo
- Publication number
- DE69705993T2 DE69705993T2 DE69705993T DE69705993T DE69705993T2 DE 69705993 T2 DE69705993 T2 DE 69705993T2 DE 69705993 T DE69705993 T DE 69705993T DE 69705993 T DE69705993 T DE 69705993T DE 69705993 T2 DE69705993 T2 DE 69705993T2
- Authority
- DE
- Germany
- Prior art keywords
- strip
- inorganic acid
- hydrogen peroxide
- scale
- acid
- 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.)
- Expired - Lifetime
Links
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 162
- 238000005554 pickling Methods 0.000 title claims description 60
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 30
- 239000010935 stainless steel Substances 0.000 title description 27
- 150000007522 mineralic acids Chemical class 0.000 claims description 56
- 239000002253 acid Substances 0.000 claims description 40
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 36
- 235000011149 sulphuric acid Nutrition 0.000 claims description 27
- 229910052804 chromium Inorganic materials 0.000 claims description 25
- 239000011651 chromium Substances 0.000 claims description 25
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 22
- -1 Fe2+ ions Chemical class 0.000 claims description 22
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 16
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 11
- 150000002978 peroxides Chemical class 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 8
- 238000005488 sandblasting Methods 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims 2
- 238000009996 mechanical pre-treatment Methods 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 60
- 239000007864 aqueous solution Substances 0.000 description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 32
- 239000000243 solution Substances 0.000 description 30
- 229910000831 Steel Inorganic materials 0.000 description 26
- 239000010959 steel Substances 0.000 description 26
- 239000001117 sulphuric acid Substances 0.000 description 23
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 21
- 239000002699 waste material Substances 0.000 description 14
- 239000004071 soot Substances 0.000 description 12
- 239000007921 spray Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 150000007513 acids Chemical class 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 4
- 150000002222 fluorine compounds Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- LNETULKMXZVUST-UHFFFAOYSA-N 1-naphthoic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1 LNETULKMXZVUST-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002853 ongoing effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/081—Iron or steel solutions containing H2SO4
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/667,498 US5702534A (en) | 1996-05-24 | 1996-05-24 | Hydrogen peroxide pickling of stainless steel |
| US08/821,154 US5743968A (en) | 1997-03-20 | 1997-03-20 | Hydrogen peroxide pickling of stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69705993D1 DE69705993D1 (de) | 2001-09-13 |
| DE69705993T2 true DE69705993T2 (de) | 2002-04-04 |
Family
ID=27099693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69705993T Expired - Lifetime DE69705993T2 (de) | 1996-05-24 | 1997-05-22 | Beizen von rostfreiem Stahl mit Wasserstoffperoxid enthaltender Lösung |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0808919B1 (es) |
| JP (1) | JP4032319B2 (es) |
| KR (1) | KR100492841B1 (es) |
| CN (1) | CN1177082C (es) |
| AR (1) | AR007285A1 (es) |
| AT (1) | ATE204033T1 (es) |
| AU (1) | AU706523B2 (es) |
| BR (1) | BR9703228A (es) |
| CA (1) | CA2205122C (es) |
| DE (1) | DE69705993T2 (es) |
| DK (1) | DK0808919T3 (es) |
| ES (1) | ES2162155T3 (es) |
| MX (1) | MX9703809A (es) |
| TW (1) | TW416996B (es) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1377523B1 (en) * | 2001-04-09 | 2008-08-13 | AK Steel Properties, Inc. | Apparatus and method for removing hydrogen peroxide from spent pickle liquor |
| KR100654513B1 (ko) * | 2001-04-09 | 2006-12-05 | 에이케이 스틸 프로퍼티즈 인코포레이티드 | 실리콘함유 전기강 스트립의 피클링 방법 |
| KR100470410B1 (ko) * | 2002-05-29 | 2005-02-07 | 주식회사 포스코 | 냉연강판 표면의 과열흠 저감을 위한 냉연 산세방법 |
| KR100948923B1 (ko) * | 2003-05-29 | 2010-03-23 | 주식회사 포스코 | 산세탱크의 스트립 부착 스케일 박리장치 |
| CN101922011B (zh) * | 2010-08-06 | 2012-08-29 | 东北大学 | 一种430不锈钢表面的酸洗方法 |
| KR101316393B1 (ko) * | 2011-08-10 | 2013-10-08 | 주식회사 포스코 | 친환경적인 마르텐사이트계 스테인리스 강판의 스케일 제거 시스템 및 이를 이용한 마르텐사이트계 스테인리스 강판의 제조방법 |
| EP3029163B9 (en) | 2014-12-02 | 2019-11-27 | CMI UVK GmbH | Method and system of treating a carbon steel strip, especially for pickling |
| CN106148973A (zh) * | 2015-04-21 | 2016-11-23 | 宝钢特钢有限公司 | 一种热轧普通不锈钢板的酸洗方法 |
| CN106011886A (zh) * | 2016-06-02 | 2016-10-12 | 中冶南方工程技术有限公司 | 一种热轧201奥氏体不锈钢无硝酸酸洗方法 |
| CN105887103A (zh) * | 2016-06-02 | 2016-08-24 | 中冶南方工程技术有限公司 | 一种热轧430铁素体不锈钢无硝酸酸洗方法 |
| CN105908195B (zh) * | 2016-06-02 | 2018-03-27 | 中冶南方工程技术有限公司 | 一种热轧409l铁素体不锈钢无硝酸酸洗方法 |
| CN105908196A (zh) * | 2016-06-02 | 2016-08-31 | 中冶南方工程技术有限公司 | 一种热轧304奥氏体不锈钢无硝酸酸洗方法 |
| CN105887104A (zh) * | 2016-06-02 | 2016-08-24 | 中冶南方工程技术有限公司 | 一种热轧439铁素体不锈钢无硝酸酸洗方法 |
| CN106435607B (zh) * | 2016-06-30 | 2021-05-18 | 宝钢德盛不锈钢有限公司 | 一种环保的不锈钢热轧卷连续退火酸洗生产方法及酸洗液 |
| CN106835159B (zh) * | 2016-12-27 | 2021-05-18 | 宝钢德盛不锈钢有限公司 | 一种中高铬不锈钢冷轧卷的连续酸洗方法及酸洗液 |
| TWI657167B (zh) * | 2018-02-21 | 2019-04-21 | 中國鋼鐵股份有限公司 | 酸洗鋼帶清洗裝置 |
| WO2020067884A1 (en) * | 2018-09-24 | 2020-04-02 | Lely Patent N.V. | Milking system with detection system |
| CN110316511A (zh) * | 2019-06-05 | 2019-10-11 | 浙江长兴鼎昌金属制品有限公司 | 一种用于不锈钢生产冷却输送的节能设备 |
| CN114011790A (zh) * | 2021-11-25 | 2022-02-08 | 桂林电子科技大学 | 一种用于机械零件的自动化酸洗加工设备 |
| CN114959717A (zh) * | 2022-06-15 | 2022-08-30 | 中冶华天工程技术有限公司 | 一种铁素体不锈钢氧化铁皮去除方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2895856A (en) * | 1955-12-15 | 1959-07-21 | United States Steel Corp | Method of pickling chromium-containing steel tubes |
| JPS5096431A (es) * | 1973-12-28 | 1975-07-31 | ||
| SE439025B (sv) * | 1979-09-13 | 1985-05-28 | Fagersta Ab | Sett att avlegsna oxidskikt fran ytan av varmvalsat rostfritt stal |
| JPS5681688A (en) * | 1979-12-06 | 1981-07-03 | Kawasaki Steel Corp | Pickling method for hot rolled austenitic stainless steel plate |
| JPS5861283A (ja) * | 1981-10-05 | 1983-04-12 | Sumitomo Metal Ind Ltd | 鋼線材の酸洗脱スケ−ル方法 |
| JPS60152689A (ja) * | 1984-01-19 | 1985-08-10 | Nippon Steel Corp | 熱延鋼板の型かじり防止酸洗法 |
| JPS60243289A (ja) * | 1984-05-17 | 1985-12-03 | Kobe Steel Ltd | 酸洗処理方法 |
| US5154774A (en) * | 1985-09-19 | 1992-10-13 | Ugine Aciers De Chatillon Et Gueugnon | Process for acid pickling of stainless steel products |
| IT1255655B (it) * | 1992-08-06 | 1995-11-09 | Processo di decapaggio e passivazione di acciaio inossidabile senza impiego di acido nitrico | |
| JPH06320494A (ja) * | 1993-05-18 | 1994-11-22 | Tokai Kikai Seisakusho:Kk | 木質ハードボード等のトリミング加工装置 |
| DE4420718A1 (de) * | 1994-06-15 | 1995-12-21 | Gewerk Keramchemie | Verfahren zum Beizen von band- oder tafelförmigem Behandlungsgut |
-
1997
- 1997-05-02 TW TW086105876A patent/TW416996B/zh not_active IP Right Cessation
- 1997-05-12 CA CA002205122A patent/CA2205122C/en not_active Expired - Fee Related
- 1997-05-21 JP JP13121597A patent/JP4032319B2/ja not_active Expired - Lifetime
- 1997-05-22 DK DK97108296T patent/DK0808919T3/da active
- 1997-05-22 DE DE69705993T patent/DE69705993T2/de not_active Expired - Lifetime
- 1997-05-22 AT AT97108296T patent/ATE204033T1/de not_active IP Right Cessation
- 1997-05-22 ES ES97108296T patent/ES2162155T3/es not_active Expired - Lifetime
- 1997-05-22 EP EP97108296A patent/EP0808919B1/en not_active Expired - Lifetime
- 1997-05-23 AU AU23601/97A patent/AU706523B2/en not_active Ceased
- 1997-05-23 MX MX9703809A patent/MX9703809A/es unknown
- 1997-05-23 KR KR1019970020297A patent/KR100492841B1/ko not_active IP Right Cessation
- 1997-05-23 BR BR9703228A patent/BR9703228A/pt not_active IP Right Cessation
- 1997-05-26 AR ARP970102223A patent/AR007285A1/es unknown
- 1997-05-26 CN CNB971054266A patent/CN1177082C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2205122A1 (en) | 1997-11-24 |
| JPH1046373A (ja) | 1998-02-17 |
| AU706523B2 (en) | 1999-06-17 |
| KR100492841B1 (ko) | 2005-08-31 |
| AR007285A1 (es) | 1999-10-27 |
| MX9703809A (es) | 1998-04-30 |
| DK0808919T3 (da) | 2001-10-08 |
| CA2205122C (en) | 2008-07-15 |
| EP0808919A1 (en) | 1997-11-26 |
| BR9703228A (pt) | 1998-09-01 |
| EP0808919B1 (en) | 2001-08-08 |
| ES2162155T3 (es) | 2001-12-16 |
| ATE204033T1 (de) | 2001-08-15 |
| AU2360197A (en) | 1997-11-27 |
| CN1177082C (zh) | 2004-11-24 |
| CN1178262A (zh) | 1998-04-08 |
| JP4032319B2 (ja) | 2008-01-16 |
| DE69705993D1 (de) | 2001-09-13 |
| KR970074980A (ko) | 1997-12-10 |
| TW416996B (en) | 2001-01-01 |
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