DE2402670C3 - Verfahren zur Herstellung von hydratisierten Calciumsilikaten - Google Patents
Verfahren zur Herstellung von hydratisierten CalciumsilikatenInfo
- Publication number
- DE2402670C3 DE2402670C3 DE2402670A DE2402670A DE2402670C3 DE 2402670 C3 DE2402670 C3 DE 2402670C3 DE 2402670 A DE2402670 A DE 2402670A DE 2402670 A DE2402670 A DE 2402670A DE 2402670 C3 DE2402670 C3 DE 2402670C3
- Authority
- DE
- Germany
- Prior art keywords
- reaction
- slurry
- cao
- hydrated calcium
- production
- 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
Links
- 238000000034 method Methods 0.000 title claims description 17
- 235000012241 calcium silicate Nutrition 0.000 title claims description 14
- 238000002360 preparation method Methods 0.000 title claims 2
- 239000002002 slurry Substances 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 34
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 25
- 239000000292 calcium oxide Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000395 magnesium oxide Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000007795 chemical reaction product Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 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 claims description 2
- 239000010425 asbestos Substances 0.000 claims description 2
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000000378 calcium silicate Substances 0.000 claims 7
- 229910052918 calcium silicate Inorganic materials 0.000 claims 7
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims 7
- 239000013067 intermediate product Substances 0.000 claims 4
- 239000007900 aqueous suspension Substances 0.000 claims 2
- 229920006395 saturated elastomer Polymers 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims 1
- 239000005909 Kieselgur Substances 0.000 claims 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 229910020169 SiOa Inorganic materials 0.000 claims 1
- 230000002378 acidificating effect Effects 0.000 claims 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009835 boiling Methods 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical class [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims 1
- 235000011132 calcium sulphate Nutrition 0.000 claims 1
- 238000010924 continuous production Methods 0.000 claims 1
- 229910001610 cryolite Inorganic materials 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 235000012255 calcium oxide Nutrition 0.000 description 13
- 238000001879 gelation Methods 0.000 description 8
- 239000000499 gel Substances 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 5
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical group CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/22—Magnesium silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/24—Alkaline-earth metal silicates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate cements
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4587372A JPS495900A (US20110009641A1-20110113-C00160.png) | 1972-05-11 | 1972-05-11 | |
JP11283473A JPS5410956B2 (US20110009641A1-20110113-C00160.png) | 1972-05-11 | 1973-10-09 | |
JP11283573A JPS5410957B2 (US20110009641A1-20110113-C00160.png) | 1972-05-11 | 1973-10-09 | |
SE7400118A SE380240B (sv) | 1972-05-11 | 1974-01-04 | Forfarande for framstellning av hydratiserade kalciumsilikater |
US431222A US3928539A (en) | 1972-05-05 | 1974-01-07 | Method for continuously producing hydrated calcium silicates |
CA189,680A CA1011086A (en) | 1972-05-11 | 1974-01-08 | Method for continuously producing hydrated calcium silicates |
GB93674A GB1462242A (en) | 1972-05-11 | 1974-01-09 | Method for continuously producting hydrated calcium silicates |
NL7400659.A NL164007C (nl) | 1972-05-11 | 1974-01-17 | Werkwijze voor het continu bereiden van gehydrateerde calciumsilicaten. |
FR7401751A FR2258346B1 (US20110009641A1-20110113-C00160.png) | 1972-05-11 | 1974-01-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2402670A1 DE2402670A1 (de) | 1975-04-17 |
DE2402670B2 DE2402670B2 (de) | 1978-03-02 |
DE2402670C3 true DE2402670C3 (de) | 1981-03-12 |
Family
ID=39166319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2402670A Expired DE2402670C3 (de) | 1972-05-11 | 1974-01-21 | Verfahren zur Herstellung von hydratisierten Calciumsilikaten |
Country Status (8)
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011057630A2 (de) | 2009-11-13 | 2011-05-19 | Cirkel Gmbh & Co. Kg | Verfahren zur herstellung einer tierstreu |
DE102019105573A1 (de) | 2018-03-05 | 2019-09-05 | Cirkel Gmbh & Co. Kg | Verfahren zur Herstellung einer granulatförmigen Tierstreu |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7809621A (nl) | 1978-09-21 | 1980-03-25 | Warrior Chem Consult | Werkwijze ter bereiding van een overwegend calciumsili- caat van het xonotliet-type houdend asbestloos materi- aal, alsmede voorwerp, verkregen onder toepassing van het volgens de werkwijze bereide calciumsilicaat. |
DK159015C (da) * | 1978-09-21 | 1991-02-04 | Redco Nv | Fremgangsmaade og anlaeg til chargevis fremstilling af calciumsilikat-isolering |
JPS56109855A (en) * | 1980-02-04 | 1981-08-31 | Mitsubishi Chem Ind | Manufacture of calcium silicate formed body |
US4545970A (en) * | 1981-10-28 | 1985-10-08 | Pieter Krijgsman | Method for the formation of calcium silicate and the resulting structure |
JPS58145652A (ja) * | 1982-02-24 | 1983-08-30 | 三菱化学株式会社 | 珪酸カルシウム成形体 |
DE3609355A1 (de) * | 1986-03-20 | 1987-09-24 | Giulini Chemie | Flaechenfoermig vernetzte xonotlitfasern und ihre herstellung |
JPS62260713A (ja) * | 1986-05-07 | 1987-11-13 | Univ Tohoku | ゾノトライト繊維の製造方法 |
DE3621705A1 (de) * | 1986-06-28 | 1988-01-14 | Giulini Chemie | Flaechenfoermig miteinander verfilzte und vernetzte xonotlitkristalle und ihre herstellung |
LT3039B (en) | 1992-11-09 | 1994-09-25 | Uzdaroji Akcine Bendrove Silum | Process for preparing calcium hydrosilicates and articles of them |
DE102005037771B4 (de) * | 2005-08-10 | 2007-08-30 | Forschungszentrum Karlsruhe Gmbh | Verfahren zur Herstellung von Belit-Bindemittel |
JP5164033B2 (ja) * | 2006-03-10 | 2013-03-13 | 独立行政法人産業技術総合研究所 | シリカ多孔質凝集体の製造方法 |
BE1025189B1 (nl) * | 2017-04-25 | 2018-12-03 | Etex Building Performance Nv | Methode voor het controleren van lediging van reactor |
CN108191374B (zh) * | 2018-04-02 | 2020-08-25 | 内蒙古普诺思新材料科技有限公司 | 一种合成轻质硅酸钙保温材料的方法 |
CN113120913A (zh) * | 2021-03-23 | 2021-07-16 | 内蒙古工业大学 | 具有多级孔分布的钙镁硅功能材料及其制备方法和用途 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA611578A (en) * | 1960-12-27 | Jesse R. Neal, Jr. | Method of making calcareous-silicious insulating material | |
US1574380A (en) * | 1925-06-23 | 1926-02-23 | Celite Company | Article of manufacture and process of making same |
US2215891A (en) * | 1938-11-12 | 1940-09-24 | Gypsum Lime And Alabastine | Method of producing hydrated calcium silicate minerals and products thereof |
US2665996A (en) * | 1952-03-26 | 1954-01-12 | Owens Illinois Glass Co | Hydrous calcium silicates and method of preparation |
DE1015734B (de) * | 1953-07-10 | 1957-09-12 | Owens Illinois Glass Co | Verfahren zur Herstellung eines Calciumsilicatproduktes |
DE1005048B (de) * | 1954-04-08 | 1957-03-28 | Degussa | Verfahren zur Herstellung von leichtem, hochvoluminoesem Silicat oder Siliciumdioxyd |
US3033648A (en) * | 1959-02-04 | 1962-05-08 | Johns Manville | Hydrothermal process for the manufacture of hydrated calcium silicates |
US3679446A (en) * | 1968-06-04 | 1972-07-25 | Osaka Packing | Molding materials of calcium silicate hydrate and shaped products thereof |
DE1792551A1 (de) * | 1968-09-19 | 1971-02-18 | Rheinische Kalksteinwerke | Verfahren zur Herstellung von synthetischem Wollastonit |
JPS5622812B2 (US20110009641A1-20110113-C00160.png) * | 1971-05-08 | 1981-05-27 |
-
1973
- 1973-10-09 JP JP11283573A patent/JPS5410957B2/ja not_active Expired
- 1973-10-09 JP JP11283473A patent/JPS5410956B2/ja not_active Expired
-
1974
- 1974-01-04 SE SE7400118A patent/SE380240B/xx not_active IP Right Cessation
- 1974-01-08 CA CA189,680A patent/CA1011086A/en not_active Expired
- 1974-01-09 GB GB93674A patent/GB1462242A/en not_active Expired
- 1974-01-17 NL NL7400659.A patent/NL164007C/xx not_active IP Right Cessation
- 1974-01-18 FR FR7401751A patent/FR2258346B1/fr not_active Expired
- 1974-01-21 BE BE140026A patent/BE809987A/xx not_active IP Right Cessation
- 1974-01-21 DE DE2402670A patent/DE2402670C3/de not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011057630A2 (de) | 2009-11-13 | 2011-05-19 | Cirkel Gmbh & Co. Kg | Verfahren zur herstellung einer tierstreu |
DE102009044521A1 (de) | 2009-11-13 | 2011-06-01 | Cirkel Gmbh & Co. Kg | Verfahren zur Herstellung einer Tierstreu |
DE102009044521B4 (de) | 2009-11-13 | 2018-04-26 | Cirkel Gmbh & Co. Kg | Verfahren zur Herstellung einer Tierstreu |
DE102019105573A1 (de) | 2018-03-05 | 2019-09-05 | Cirkel Gmbh & Co. Kg | Verfahren zur Herstellung einer granulatförmigen Tierstreu |
Also Published As
Publication number | Publication date |
---|---|
NL7400659A (nl) | 1975-07-21 |
JPS5062899A (US20110009641A1-20110113-C00160.png) | 1975-05-29 |
SE380240B (sv) | 1975-11-03 |
BE809987A (fr) | 1974-05-16 |
JPS5410957B2 (US20110009641A1-20110113-C00160.png) | 1979-05-10 |
GB1462242A (en) | 1977-01-19 |
DE2402670A1 (de) | 1975-04-17 |
FR2258346A1 (US20110009641A1-20110113-C00160.png) | 1975-08-18 |
DE2402670B2 (de) | 1978-03-02 |
JPS5410956B2 (US20110009641A1-20110113-C00160.png) | 1979-05-10 |
JPS5062898A (US20110009641A1-20110113-C00160.png) | 1975-05-29 |
NL164007B (nl) | 1980-06-16 |
NL164007C (nl) | 1980-11-17 |
SE7400118L (US20110009641A1-20110113-C00160.png) | 1975-07-07 |
FR2258346B1 (US20110009641A1-20110113-C00160.png) | 1976-11-26 |
CA1011086A (en) | 1977-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |