DE3246324C2 - Verwendung von Kohlenstoffprodukten als Zusatz zu tongebundenen Gießereiformsandmassen - Google Patents
Verwendung von Kohlenstoffprodukten als Zusatz zu tongebundenen GießereiformsandmassenInfo
- Publication number
- DE3246324C2 DE3246324C2 DE3246324A DE3246324A DE3246324C2 DE 3246324 C2 DE3246324 C2 DE 3246324C2 DE 3246324 A DE3246324 A DE 3246324A DE 3246324 A DE3246324 A DE 3246324A DE 3246324 C2 DE3246324 C2 DE 3246324C2
- Authority
- DE
- Germany
- Prior art keywords
- carbon
- use according
- crystalline
- max
- carbon product
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 47
- 239000000654 additive Substances 0.000 title claims description 21
- 239000003110 molding sand Substances 0.000 title claims description 13
- 239000004927 clay Substances 0.000 title claims description 4
- 230000000996 additive effect Effects 0.000 title claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- 229930014626 natural product Natural products 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 14
- 229910021382 natural graphite Inorganic materials 0.000 claims description 10
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000000470 constituent Substances 0.000 claims description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003830 anthracite Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims description 2
- 229910021383 artificial graphite Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 16
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 239000000969 carrier Substances 0.000 description 12
- 239000004576 sand Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 239000002817 coal dust Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 210000003462 vein Anatomy 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Chemical compound C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 1
- BTOVVHWKPVSLBI-UHFFFAOYSA-N 2-methylprop-1-enylbenzene Chemical compound CC(C)=CC1=CC=CC=C1 BTOVVHWKPVSLBI-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RZOHUCYWTBSXAG-UHFFFAOYSA-N C1(=CC=CC=C1O)C.C1(=CC=CC=C1)O.C1=CC=CC2=CC=CC=C12 Chemical compound C1(=CC=CC=C1O)C.C1(=CC=CC=C1)O.C1=CC=CC2=CC=CC=C12 RZOHUCYWTBSXAG-UHFFFAOYSA-N 0.000 description 1
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 1
- WDECIBYCCFPHNR-UHFFFAOYSA-N Chrysene Natural products C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000002129 Malva sylvestris Species 0.000 description 1
- 235000006770 Malva sylvestris Nutrition 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- LBBLDJJXDUQFQU-UHFFFAOYSA-N [C].[C].[C] Chemical compound [C].[C].[C] LBBLDJJXDUQFQU-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- OQQQJWHMHFGDNE-UHFFFAOYSA-N benzene phenol toluene 1,2-xylene Chemical compound C1(=CC=CC=C1)O.C=1(C(=CC=CC1)C)C.C1(=CC=CC=C1)C.C1=CC=CC=C1 OQQQJWHMHFGDNE-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 231100000219 mutagenic Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004525 petroleum distillation Methods 0.000 description 1
- 229930015698 phenylpropene Natural products 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Detergent Compositions (AREA)
- Dental Preparations (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Seasonings (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3246324A DE3246324C2 (de) | 1982-12-15 | 1982-12-15 | Verwendung von Kohlenstoffprodukten als Zusatz zu tongebundenen Gießereiformsandmassen |
| EP83100419A EP0111616B2 (de) | 1982-12-15 | 1983-01-18 | Verwendung von Zusätzen für umweltfreundliche Giessereiformsande |
| AT83100419T ATE22021T1 (de) | 1982-12-15 | 1983-01-18 | Verwendung von zusaetzen fuer umweltfreundliche giessereiformsande. |
| GR73234A GR79166B (cs) | 1982-12-15 | 1983-12-13 | |
| DK575683A DK162265C (da) | 1982-12-15 | 1983-12-14 | Anvendelse af kulstofprodukter som tilsaetningsmidler til lerbundne stoeberiformsandmasser |
| IE2968/83A IE54891B1 (en) | 1982-12-15 | 1983-12-15 | Use of additives for environmentally harmless foundry mould sands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3246324A DE3246324C2 (de) | 1982-12-15 | 1982-12-15 | Verwendung von Kohlenstoffprodukten als Zusatz zu tongebundenen Gießereiformsandmassen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE3246324A1 DE3246324A1 (de) | 1984-07-19 |
| DE3246324C3 DE3246324C3 (de) | 1994-07-14 |
| DE3246324C2 true DE3246324C2 (de) | 1994-07-14 |
Family
ID=6180663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3246324A Expired - Lifetime DE3246324C2 (de) | 1982-12-15 | 1982-12-15 | Verwendung von Kohlenstoffprodukten als Zusatz zu tongebundenen Gießereiformsandmassen |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0111616B2 (cs) |
| AT (1) | ATE22021T1 (cs) |
| DE (1) | DE3246324C2 (cs) |
| DK (1) | DK162265C (cs) |
| GR (1) | GR79166B (cs) |
| IE (1) | IE54891B1 (cs) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3614397A1 (de) * | 1986-04-28 | 1987-10-29 | Wolfgang Caspers | Verfahren zum vermindern von emissionen, insbesondere von kohlenwasserstoff-verbindungen, beim giessen von metallen |
| DE3704726C3 (de) * | 1987-02-14 | 1998-01-08 | Iko Gmbh & Co Kg | Verfahren zum Beschleunigen der Wasseradsorption von als Zuschlagstoff für Gießereiformsande verwendetem Bentonit |
| US5094289A (en) * | 1990-09-19 | 1992-03-10 | American Colloid Company | Roasted carbon molding (foundry) sand and method of casting |
| US5215143A (en) * | 1992-11-16 | 1993-06-01 | American Colloid Company | Non-porous carbon molding (foundry) sand and method of casting |
| RU2139769C1 (ru) * | 1997-12-08 | 1999-10-20 | Акционерное общество закрытого типа "Литаформ" | Формовочный материал |
| HRP20040182A2 (en) | 2001-08-14 | 2004-08-31 | Climarotec Ges Fuer Raumklimat | Method and metal casting case for reducing pollutant emissions in foundry practices |
| DE10205158A1 (de) * | 2002-02-07 | 2003-08-21 | Iko Minerals Gmbh | Verfahren zum Herstellen eines insbesondere im Kreislauf geführten Formsandes für Gießereizwecke |
| RU2252104C2 (ru) * | 2003-01-14 | 2005-05-20 | Закрытое акционерное общество "Волжская независимая химическая компания" | Формовочный материал |
| RU2372163C1 (ru) * | 2008-04-21 | 2009-11-10 | Закрытое акционерное общество Производственно-коммерческая фирма "Волжская независимая производственная компания" | Формовочный материал |
| RU2393938C1 (ru) * | 2009-05-18 | 2010-07-10 | Дмитрий Васильевич Скарюкин | Формовочный материал |
| DE102009041677A1 (de) | 2009-09-16 | 2011-03-24 | Süd-Chemie AG | Gießereiadditiv auf Grafitbasis |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169087B (de) * | 1957-11-05 | 1964-04-30 | Sulzer Ag | Anwendung von Zusaetzen zur Giessformmasse zum Schutz der Randzone von Stahlgussstuecken gegen Randentkohlung |
| DE1952357A1 (de) * | 1969-10-17 | 1971-04-29 | Ravensberger Eisenhuette | Zusatz fuer Formmassen als Ersatz fuer Kohlenstaeube zur Bildung von Glanzkohlenstoff in Giessformen |
| DE1925589A1 (de) * | 1969-05-20 | 1970-11-26 | Heinze & Co Dr | Verfahren zur Herstellung von Formstoffen zur Fertigung von Kernen und Formen zum Giessen von Metallen |
| DE2064700A1 (de) * | 1970-12-31 | 1972-07-27 | Schuiling Metall Chemie N.V., Hengelo (Niederlande) | Formstoffzsatz für Gießereisande |
| CH555789A (de) * | 1971-06-10 | 1974-11-15 | Fischer Ag Georg | Verfahren zur herstellung von kohlenstoff-formkoerpern, insbesondere von giesskokillen. |
| DE2501872B1 (de) * | 1975-01-15 | 1976-04-08 | Mannesmann Ag | Feuerfeste keramische masse |
| DE2638042A1 (de) * | 1975-09-17 | 1977-03-24 | Fischer Ag Georg | Verfahren zur behandlung poroeser, koerniger grundstoffe, insbesondere zur herstellung von giessereisanden |
| JPS5817145B2 (ja) * | 1978-12-05 | 1983-04-05 | 品川白煉瓦株式会社 | 黒鉛質耐火物 |
| IT1209745B (it) * | 1980-01-21 | 1989-08-30 | Ind Chimica Carlo Laviosa Spa | Materiale granulare per la preparazione di terre di formatura di fonderia e suo procedimento di produzione |
-
1982
- 1982-12-15 DE DE3246324A patent/DE3246324C2/de not_active Expired - Lifetime
-
1983
- 1983-01-18 AT AT83100419T patent/ATE22021T1/de not_active IP Right Cessation
- 1983-01-18 EP EP83100419A patent/EP0111616B2/de not_active Expired - Lifetime
- 1983-12-13 GR GR73234A patent/GR79166B/el unknown
- 1983-12-14 DK DK575683A patent/DK162265C/da not_active IP Right Cessation
- 1983-12-15 IE IE2968/83A patent/IE54891B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK162265C (da) | 1992-03-16 |
| DE3246324C3 (de) | 1994-07-14 |
| GR79166B (cs) | 1984-10-02 |
| DE3246324A1 (de) | 1984-07-19 |
| DK575683D0 (da) | 1983-12-14 |
| DK162265B (da) | 1991-10-07 |
| IE54891B1 (en) | 1990-03-14 |
| EP0111616B2 (de) | 1992-10-21 |
| EP0111616B1 (de) | 1986-09-10 |
| DK575683A (da) | 1984-06-16 |
| ATE22021T1 (de) | 1986-09-15 |
| IE832968L (en) | 1984-06-22 |
| EP0111616A1 (de) | 1984-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: CBF CARBOFORM EWALD SCHMIDT, 4600 DORTMUND, DE |
|
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: CBF CARBOFORM EWALD SCHMIDT, 4600 DORTMUND, DE IKO |
|
| 8327 | Change in the person/name/address of the patent owner |
Owner name: IKO INDUSTRIEKOHLE GMBH & CO KG, 4370 MARL, DE |
|
| 8366 | Restricted maintained after opposition proceedings | ||
| 8305 | Restricted maintenance of patent after opposition | ||
| D4 | Patent maintained restricted |