DE3128677A1 - Verfahren zur herstellung von folien oder platten, die u.a. als trennwaende fuer batterien von schwefelsaeureakkumulatoren geeignet sind. - Google Patents
Verfahren zur herstellung von folien oder platten, die u.a. als trennwaende fuer batterien von schwefelsaeureakkumulatoren geeignet sind.Info
- Publication number
- DE3128677A1 DE3128677A1 DE19813128677 DE3128677A DE3128677A1 DE 3128677 A1 DE3128677 A1 DE 3128677A1 DE 19813128677 DE19813128677 DE 19813128677 DE 3128677 A DE3128677 A DE 3128677A DE 3128677 A1 DE3128677 A1 DE 3128677A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- dispersion
- fibrils
- film
- polymer
- 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.)
- Withdrawn
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 14
- 239000000203 mixture Substances 0.000 claims description 36
- 239000006185 dispersion Substances 0.000 claims description 35
- 229920000642 polymer Polymers 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 22
- 239000011888 foil Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 229920003043 Cellulose fiber Polymers 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 7
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- 229920001959 vinylidene polymer Polymers 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 101100102516 Clonostachys rogersoniana vern gene Proteins 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 31
- 239000011148 porous material Substances 0.000 description 23
- 238000010438 heat treatment Methods 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 12
- -1 PbO 2 Chemical compound 0.000 description 11
- 239000004816 latex Substances 0.000 description 11
- 229920000126 latex Polymers 0.000 description 11
- 229920002678 cellulose Polymers 0.000 description 10
- 239000001913 cellulose Substances 0.000 description 10
- 239000000945 filler Substances 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 238000007654 immersion Methods 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007670 refining Methods 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920006243 acrylic copolymer Polymers 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 230000010220 ion permeability Effects 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 235000012222 talc Nutrition 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- BTSFESCCYNUKPK-UHFFFAOYSA-L [O-2].[O-2].[Ti+4].[Ba+2].[O-]S([O-])(=O)=O Chemical compound [O-2].[O-2].[Ti+4].[Ba+2].[O-]S([O-])(=O)=O BTSFESCCYNUKPK-UHFFFAOYSA-L 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0005—Acid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Cell Separators (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23603/80A IT1132217B (it) | 1980-07-22 | 1980-07-22 | Procedimento per la fabbricazione di separatori per batterie di accumulatori ad acido solforico |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3128677A1 true DE3128677A1 (de) | 1982-04-22 |
Family
ID=11208487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813128677 Withdrawn DE3128677A1 (de) | 1980-07-22 | 1981-07-20 | Verfahren zur herstellung von folien oder platten, die u.a. als trennwaende fuer batterien von schwefelsaeureakkumulatoren geeignet sind. |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5753066A (enrdf_load_stackoverflow) |
| DE (1) | DE3128677A1 (enrdf_load_stackoverflow) |
| ES (1) | ES504142A0 (enrdf_load_stackoverflow) |
| FR (1) | FR2487586A1 (enrdf_load_stackoverflow) |
| GB (1) | GB2080352B (enrdf_load_stackoverflow) |
| IT (1) | IT1132217B (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589787B1 (fr) * | 1985-09-27 | 1988-05-20 | Rhone Poulenc Chim Base | Materiau microporeux, procede pour son obtention, et applications notamment a la realisation d'elements cathodiques |
| WO1998000875A1 (en) * | 1996-07-01 | 1998-01-08 | Hollingsworth & Vose Company | Glass fiber separators for batteries |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4851130A (enrdf_load_stackoverflow) * | 1971-10-28 | 1973-07-18 | ||
| DE2332320C2 (de) * | 1972-06-29 | 1982-09-16 | Exxon Research and Engineering Co., 07036 Linden, N.J. | Verfahren zur Herstellung von Batterieseparatoren |
| ES480454A1 (es) * | 1977-05-11 | 1980-08-16 | Tullis Russell Co Ltd | Metodo de fabricacion de un material separador para baterias |
| JPS54140941A (en) * | 1978-04-26 | 1979-11-01 | Mitsui Petrochemical Ind | Method of producing battery separator |
| US4216281A (en) * | 1978-08-21 | 1980-08-05 | W. R. Grace & Co. | Battery separator |
| FR2435223A1 (fr) * | 1978-09-06 | 1980-04-04 | Petit Jean Philippe | Produit, notamment article de bijouterie ou objet d'art |
| ES479151A1 (es) * | 1979-03-31 | 1980-07-01 | Montedison Spa | Procedimiento para la preparacion de tabiques porosos para baterias de acumuladores de acido sulfurico. |
-
1980
- 1980-07-22 IT IT23603/80A patent/IT1132217B/it active
-
1981
- 1981-07-20 DE DE19813128677 patent/DE3128677A1/de not_active Withdrawn
- 1981-07-21 FR FR8114139A patent/FR2487586A1/fr active Granted
- 1981-07-21 GB GB8122357A patent/GB2080352B/en not_active Expired
- 1981-07-21 ES ES504142A patent/ES504142A0/es active Granted
- 1981-07-22 JP JP56113816A patent/JPS5753066A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2080352A (en) | 1982-02-03 |
| IT1132217B (it) | 1986-06-25 |
| FR2487586B1 (enrdf_load_stackoverflow) | 1984-08-17 |
| ES8301392A1 (es) | 1982-12-01 |
| JPS5753066A (en) | 1982-03-29 |
| ES504142A0 (es) | 1982-12-01 |
| IT8023603A0 (it) | 1980-07-22 |
| FR2487586A1 (fr) | 1982-01-29 |
| GB2080352B (en) | 1984-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |