NL8600283A - Werkwijze voor het zuiveren van kwartszand. - Google Patents
Werkwijze voor het zuiveren van kwartszand. Download PDFInfo
- Publication number
- NL8600283A NL8600283A NL8600283A NL8600283A NL8600283A NL 8600283 A NL8600283 A NL 8600283A NL 8600283 A NL8600283 A NL 8600283A NL 8600283 A NL8600283 A NL 8600283A NL 8600283 A NL8600283 A NL 8600283A
- Authority
- NL
- Netherlands
- Prior art keywords
- sand
- quartz sand
- weight
- quartz
- acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 72
- 239000006004 Quartz sand Substances 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 239000004576 sand Substances 0.000 claims description 25
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 150000002506 iron compounds Chemical class 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 235000021317 phosphate Nutrition 0.000 description 5
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 5
- -1 spessartite Inorganic materials 0.000 description 5
- 229910052845 zircon Inorganic materials 0.000 description 5
- 244000052616 bacterial pathogen Species 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- IUMKBGOLDBCDFK-UHFFFAOYSA-N dialuminum;dicalcium;iron(2+);trisilicate;hydrate Chemical compound O.[Al+3].[Al+3].[Ca+2].[Ca+2].[Fe+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IUMKBGOLDBCDFK-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052869 epidote Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000035611 feeding Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052590 monazite Inorganic materials 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- UXBZSSBXGPYSIL-UHFFFAOYSA-N phosphoric acid;yttrium(3+) Chemical compound [Y+3].OP(O)(O)=O UXBZSSBXGPYSIL-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 239000011034 rock crystal Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910000164 yttrium(III) phosphate Inorganic materials 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/02—Pretreated ingredients
- C03C1/022—Purification of silica sand or other minerals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Silicon Compounds (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8600283A NL8600283A (nl) | 1986-02-06 | 1986-02-06 | Werkwijze voor het zuiveren van kwartszand. |
| US06/877,601 US4804422A (en) | 1986-02-06 | 1986-06-23 | Method of purifying quartz sand |
| EP87200147A EP0233665B1 (de) | 1986-02-06 | 1987-02-02 | Verfahren zur Reinigung von Quarzsand |
| DE8787200147T DE3774723D1 (de) | 1986-02-06 | 1987-02-02 | Verfahren zur reinigung von quarzsand. |
| NO870425A NO870425L (no) | 1986-02-06 | 1987-02-03 | Fremgangsmaate for rensing av kvartssand. |
| JP62021905A JPH0755844B2 (ja) | 1986-02-06 | 1987-02-03 | 石英砂の精製法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8600283A NL8600283A (nl) | 1986-02-06 | 1986-02-06 | Werkwijze voor het zuiveren van kwartszand. |
| NL8600283 | 1986-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8600283A true NL8600283A (nl) | 1987-09-01 |
Family
ID=19847531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8600283A NL8600283A (nl) | 1986-02-06 | 1986-02-06 | Werkwijze voor het zuiveren van kwartszand. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4804422A (de) |
| EP (1) | EP0233665B1 (de) |
| JP (1) | JPH0755844B2 (de) |
| DE (1) | DE3774723D1 (de) |
| NL (1) | NL8600283A (de) |
| NO (1) | NO870425L (de) |
Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4952246A (en) * | 1989-08-23 | 1990-08-28 | Dependable Foundry Equipment Company, Inc. | Plant and method for reconditioning green foundry sand |
| US5037625A (en) * | 1990-02-06 | 1991-08-06 | The Feldspar Corporation | Purified quartz and process for purifying quartz |
| US4983370A (en) * | 1990-02-06 | 1991-01-08 | The Feldspar Corporation | Purified quartz and process for purifying quartz |
| IL100503A (en) * | 1991-12-25 | 1995-03-30 | R & D Silicate Prod Ltd | Process for the preparation of amorphous silica |
| DE4435568A1 (de) * | 1994-10-05 | 1996-04-11 | Hoechst Ag | Verfahren zur Verbesserung der Qualität von Quarzsand |
| US6174509B1 (en) * | 1997-02-11 | 2001-01-16 | Corning Incorporated | Pure fused silica, furnace and method |
| US5968259A (en) * | 1997-08-27 | 1999-10-19 | Shin-Etsu Quartz Products Co., Ltd. | High-purity quartz glass and method for the preparation thereof |
| US6098810A (en) * | 1998-06-26 | 2000-08-08 | Pueblo Process, Llc | Flotation process for separating silica from feldspar to form a feed material for making glass |
| US6574991B1 (en) | 1998-08-13 | 2003-06-10 | Corning Incorporated | Pure fused silica, furnace and method |
| US6182237B1 (en) | 1998-08-31 | 2001-01-30 | International Business Machines Corporation | System and method for detecting phase errors in asics with multiple clock frequencies |
| US6277349B1 (en) * | 1998-11-14 | 2001-08-21 | C. Eric Westbrook | Tridymite-based processing for high purity quartz |
| AUPR054000A0 (en) * | 2000-10-04 | 2000-10-26 | Austai Motors Designing Pty Ltd | A planetary gear apparatus |
| US20040258496A1 (en) * | 2002-04-08 | 2004-12-23 | Marusich Troy D. | High frequency tooth pass cutting device and method |
| US20110120365A1 (en) * | 2009-11-25 | 2011-05-26 | Hui She | Process for removal of contaminants from a melt of non-ferrous metals and apparatus for growing high purity silicon crystals |
| CN102029271B (zh) * | 2010-11-08 | 2012-05-02 | 连云港晶族新材料科技有限公司 | 石英砂提纯清洗装置与工艺 |
| CN102173425B (zh) * | 2010-12-28 | 2012-07-25 | 汪徐春 | 一种铵盐络合法除铁以制备高纯石英砂的方法 |
| CN102259870B (zh) * | 2011-05-12 | 2012-09-26 | 田辉明 | 一种石英砂提纯酸洗装置 |
| GB2514118B (en) * | 2013-05-13 | 2015-11-11 | Heraeus Quartz Uk Ltd | Froth floatation separation and analysis |
| US10384972B2 (en) * | 2014-02-06 | 2019-08-20 | Momentive Performance Materials Inc. | Fused quartz tubing for pharmaceutical packaging and methods for making the same |
| CN104445864A (zh) * | 2014-11-14 | 2015-03-25 | 东莞市长安东阳光铝业研发有限公司 | 一种用酸蒸汽去除高纯石英砂杂质的方法 |
| CN109485048A (zh) * | 2017-09-15 | 2019-03-19 | 江苏闽江矿业有限公司 | 一种石英砂的除杂工艺 |
| JP7121337B2 (ja) * | 2018-07-05 | 2022-08-18 | 日本電気硝子株式会社 | ガラス材の製造方法及びガラス材 |
| CN108910897B (zh) * | 2018-08-03 | 2020-01-24 | 湖北菲利华石英玻璃股份有限公司 | 一种石英砂高温活化提纯方法 |
| EP3763682A1 (de) | 2019-07-12 | 2021-01-13 | Heraeus Quarzglas GmbH & Co. KG | Reinigung von quarzpulvern durch entfernung von mikropartikeln aus feuerfesten materialien |
| CN110615687B (zh) * | 2019-11-01 | 2022-05-13 | 内蒙古仁创沙产业有限公司 | 一种铸造硅砂的提纯方法和高纯硅砂 |
| CN113210343A (zh) * | 2020-01-18 | 2021-08-06 | 徐州市万达石英有限公司 | 一种节能型石英提纯装置 |
| CN111747648A (zh) * | 2020-08-07 | 2020-10-09 | 福莱特玻璃集团股份有限公司 | 一种应用于玻璃生产的石英砂提纯工艺及装置 |
| CN112897877A (zh) * | 2021-02-02 | 2021-06-04 | 台玻安徽玻璃有限公司 | 浮法玻璃之备用高纯石英原料分离提纯方法 |
| CN113479894A (zh) * | 2021-07-27 | 2021-10-08 | 深圳市考拉生态科技有限公司 | 环保型石英砂提纯工艺 |
| CN113856608A (zh) * | 2021-09-13 | 2021-12-31 | 贺永圣 | 一种提高反应提纯效率的石英石提纯反应釜 |
| CN114043725A (zh) * | 2021-10-29 | 2022-02-15 | 康硕(德阳)智能制造有限公司 | 一种3d打印石英废砂处理工艺 |
| CN114014540B (zh) * | 2021-12-08 | 2022-07-29 | 连云港太平洋半导体材料有限公司 | 一种乳白石英玻璃的制备工艺 |
| CN114477188B (zh) * | 2022-03-01 | 2023-07-21 | 何良雨 | 一种高纯石英砂的提纯方法及装置 |
| CN114477189B (zh) * | 2022-03-01 | 2023-06-20 | 何良雨 | 一种超高纯石英砂的提纯方法 |
| CN114618824A (zh) * | 2022-03-17 | 2022-06-14 | 湖南亿胜新材料有限公司 | 一种精制石英砂酸洗提纯装置 |
| CN114835129B (zh) * | 2022-04-26 | 2023-04-25 | 连云港强邦石英制品有限公司 | 一种石英砂酸洗设备及酸洗工艺 |
| CN114933306A (zh) * | 2022-05-10 | 2022-08-23 | 天津拓展伟创材料研究有限公司 | 一种石英砂络合提纯方法 |
| CN115028170A (zh) * | 2022-05-18 | 2022-09-09 | 天津臻泰科技有限公司 | 一种无氟碱酸联合擦洗生产低铁硅质原料的方法 |
| CN115140741B (zh) * | 2022-06-30 | 2023-07-21 | 中鸿控股集团有限公司 | 一种以花岗伟晶岩为原料制备4N及4N以上的SiO2石英砂的方法 |
| CN115090604B (zh) * | 2022-07-18 | 2023-10-24 | 徐州水处理研究所 | 一种连续流水线式大规模酸洗生产低铁石英砂装置 |
| CN115382835B (zh) * | 2022-08-19 | 2023-12-22 | 陕西合兴硅砂有限公司 | 一种生产光伏玻璃用石英砂的一体式装置及方法 |
| CN115490237A (zh) * | 2022-09-09 | 2022-12-20 | 连云港福东正佑照明电器有限公司 | 一种高温气氛提纯石英砂的设备和方法 |
| CN116081628B (zh) * | 2022-12-29 | 2024-04-16 | 中建材玻璃新材料研究院集团有限公司 | 一种石英砂动态连续酸洗提纯工艺方法及装备 |
| CN117862100B (zh) * | 2024-01-05 | 2024-06-04 | 江苏弘扬石英制品有限公司 | 一种石英砂酸洗提纯装置 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA604060A (en) * | 1960-08-23 | International Minerals And Chemical Corporation | Purification of sand | |
| CA594783A (en) * | 1960-03-22 | Potter Charles | Treatment of sand | |
| US1219438A (en) * | 1916-04-25 | 1917-03-20 | Robert M Catlin | Method of making decolorizing materials. |
| GB555241A (en) * | 1941-11-07 | 1943-08-12 | Pilkington Brothers Ltd | Improvements in or relating to the purification of sand and other minerals from iron |
| US2502337A (en) * | 1944-09-28 | 1950-03-28 | Pure Oil Co | Use of fluoboric acid as a means of removing core sands from castings |
| US2666001A (en) * | 1950-06-15 | 1954-01-12 | Pure Oil Co | Chemical method for removing residual sand from metal castings formed in sand-type molds |
| GB796993A (en) * | 1953-10-03 | 1958-06-25 | Emi Ltd | Improvements relating to electrically-operated two state devices especially for storing binary digital data |
| US2952516A (en) * | 1957-05-10 | 1960-09-13 | Int Minerals & Chem Corp | Purification of sand |
| GB1223177A (en) * | 1968-09-17 | 1971-02-24 | British Ind Sand Ltd | The purification of sand |
| US4101309A (en) * | 1976-10-13 | 1978-07-18 | Tokyo Shibaura Electric Co., Ltd. | Method for preparing tungsten materials |
| NO144520C (no) * | 1979-02-14 | 1981-09-23 | Reidar Aamli | Krystallinsk silisiumdioksyd med kornstoerrelse under 2 mm (kvartssand) og fremgangsmaate til fremstilling av slik silisiumdioksyd ved behandling av naturlig forekommende kvartssand |
| GB8317669D0 (en) * | 1983-06-29 | 1983-08-03 | British Ind Sand Ltd | Chemical treatment of sand |
| US4477364A (en) * | 1983-11-07 | 1984-10-16 | Capetrol International, Inc. | Acidic glass cleaning composition |
-
1986
- 1986-02-06 NL NL8600283A patent/NL8600283A/nl not_active Application Discontinuation
- 1986-06-23 US US06/877,601 patent/US4804422A/en not_active Expired - Fee Related
-
1987
- 1987-02-02 DE DE8787200147T patent/DE3774723D1/de not_active Expired - Lifetime
- 1987-02-02 EP EP87200147A patent/EP0233665B1/de not_active Expired - Lifetime
- 1987-02-03 NO NO870425A patent/NO870425L/no unknown
- 1987-02-03 JP JP62021905A patent/JPH0755844B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0233665B1 (de) | 1991-11-27 |
| EP0233665A1 (de) | 1987-08-26 |
| JPS62187138A (ja) | 1987-08-15 |
| DE3774723D1 (de) | 1992-01-09 |
| NO870425L (no) | 1987-08-07 |
| US4804422A (en) | 1989-02-14 |
| NO870425D0 (no) | 1987-02-03 |
| JPH0755844B2 (ja) | 1995-06-14 |
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| Publication | Publication Date | Title |
|---|---|---|
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