BE1006158A4 - Transformateur sec a enroulements enrobes, conducteurs ou installations electriques analogues et procede de preparation de leur resine d'enrobage. - Google Patents
Transformateur sec a enroulements enrobes, conducteurs ou installations electriques analogues et procede de preparation de leur resine d'enrobage. Download PDFInfo
- Publication number
- BE1006158A4 BE1006158A4 BE8900417A BE8900417A BE1006158A4 BE 1006158 A4 BE1006158 A4 BE 1006158A4 BE 8900417 A BE8900417 A BE 8900417A BE 8900417 A BE8900417 A BE 8900417A BE 1006158 A4 BE1006158 A4 BE 1006158A4
- Authority
- BE
- Belgium
- Prior art keywords
- sep
- water
- flame retardant
- resin
- substance
- Prior art date
Links
- 239000011347 resin Substances 0.000 title claims abstract description 71
- 229920005989 resin Polymers 0.000 title claims abstract description 71
- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000010616 electrical installation Methods 0.000 title claims abstract description 6
- 238000004804 winding Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 12
- 238000002360 preparation method Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003063 flame retardant Substances 0.000 claims abstract description 49
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000004580 weight loss Effects 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000004684 trihydrates Chemical class 0.000 claims abstract description 10
- 230000008030 elimination Effects 0.000 claims description 10
- 238000003379 elimination reaction Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 9
- 238000006297 dehydration reaction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 208000005156 Dehydration Diseases 0.000 claims 3
- 230000002035 prolonged effect Effects 0.000 claims 3
- 230000001627 detrimental effect Effects 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 67
- 239000000377 silicon dioxide Substances 0.000 description 33
- 235000012239 silicon dioxide Nutrition 0.000 description 30
- 229910052681 coesite Inorganic materials 0.000 description 29
- 229910052906 cristobalite Inorganic materials 0.000 description 29
- 229910052682 stishovite Inorganic materials 0.000 description 29
- 229910052905 tridymite Inorganic materials 0.000 description 29
- 238000005755 formation reaction Methods 0.000 description 13
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000004848 polyfunctional curative Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 239000012764 mineral filler Substances 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000892 gravimetry Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 230000000930 thermomechanical effect Effects 0.000 description 3
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- DTBDAFLSBDGPEA-UHFFFAOYSA-N 3-Methylquinoline Natural products C1=CC=CC2=CC(C)=CN=C21 DTBDAFLSBDGPEA-UHFFFAOYSA-N 0.000 description 1
- 229920003319 Araldite® Polymers 0.000 description 1
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 102100023055 Neurofilament medium polypeptide Human genes 0.000 description 1
- 101710109612 Neurofilament medium polypeptide Proteins 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 229910020489 SiO3 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- -1 bis-phenol A ethers Chemical class 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 238000007707 calorimetry Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Fireproofing Substances (AREA)
- Insulating Of Coils (AREA)
- Paints Or Removers (AREA)
- Epoxy Resins (AREA)
- Coils Of Transformers For General Uses (AREA)
- Housings And Mounting Of Transformers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8805641A FR2630578B1 (fr) | 1988-04-22 | 1988-04-22 | Transformateur sec enrobe a comportement au feu ameliore et procede de preparation de sa resine d'enrobage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE1006158A4 true BE1006158A4 (fr) | 1994-05-31 |
Family
ID=9365755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE8900417A BE1006158A4 (fr) | 1988-04-22 | 1989-04-14 | Transformateur sec a enroulements enrobes, conducteurs ou installations electriques analogues et procede de preparation de leur resine d'enrobage. |
Country Status (16)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2630578B1 (fr) * | 1988-04-22 | 1990-07-27 | France Transfo Sa | Transformateur sec enrobe a comportement au feu ameliore et procede de preparation de sa resine d'enrobage |
| WO2000055254A1 (de) * | 1999-03-16 | 2000-09-21 | Vantico Ag | Härtbare zusammensetzung mit besonderer eigenschaftskombination |
| EP3848946A4 (en) * | 2018-09-03 | 2022-09-07 | Sumitomo Seika Chemicals Co., Ltd. | Laminate of conductor and insulating film, coil, rotating electrical machine, insulating coating, and insulating film |
| JP6567797B1 (ja) * | 2018-09-03 | 2019-08-28 | 住友精化株式会社 | 導体と絶縁被膜の積層体、コイル、回転電機、絶縁塗料、及び絶縁フィルム |
| CN111623884B (zh) * | 2020-05-28 | 2021-05-18 | 山东大学 | 基于改进热网络模型的变压器热点温度识别方法及系统 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3202947A (en) * | 1961-02-16 | 1965-08-24 | Jefferson Electric Co | Epoxy insulated transformer having tris-beta-chloroethylphosphate and hydrated alumina in the insulation |
| US3626083A (en) * | 1968-01-12 | 1971-12-07 | Westinghouse Electric Corp | High-voltage insulation and insulated high-voltage apparatus |
| US3733283A (en) * | 1971-05-10 | 1973-05-15 | Du Pont | Flameproof polylactam composition and process for its manufacture |
| US4059560A (en) * | 1976-05-05 | 1977-11-22 | The Firestone Tire & Rubber Company | Smoke and flame retarded styrene polymers |
| US4193908A (en) * | 1978-09-20 | 1980-03-18 | Aluminum Company Of America | Method of reducing the viscosity of polyester-alumina _trihydrate dispersions by slight dehydration of trihydrate |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1072285B (enrdf_load_stackoverflow) * | 1959-12-31 | |||
| US2945912A (en) * | 1953-06-15 | 1960-07-19 | Moser Glaser & Co Ag | High voltage insulator |
| DE1121670B (de) * | 1955-07-21 | 1962-01-11 | Gen Electric | Kriechstromfestes Isoliermaterial fuer elektrische Geraete |
| US2990497A (en) * | 1959-06-04 | 1961-06-27 | Deluxe Coils Inc | Power pack encapsulation |
| US4145369A (en) * | 1976-09-20 | 1979-03-20 | Hitachi, Ltd. | Flame-retardant epoxy resin compositions |
| JPS5442603A (en) * | 1977-09-09 | 1979-04-04 | Hitachi Ltd | Plastic resin moulded electric motor |
| US4361620A (en) * | 1979-03-08 | 1982-11-30 | Wing Industries, Inc. | Total energy exchange medium and method of making the same |
| JPS5685806A (en) * | 1979-12-14 | 1981-07-13 | Hitachi Ltd | Stabilizer for resin molded fluorescent lamp |
| US4361668A (en) * | 1981-03-31 | 1982-11-30 | The Firestone Tire & Rubber Company | Polmers having reduced carbon monoxide generation upon burning |
| US4454280A (en) * | 1981-03-31 | 1984-06-12 | The Firestone Tire & Rubber Company | Polymers having reduced carbon monoxide generation upon burning |
| JPS6047410A (ja) * | 1983-08-26 | 1985-03-14 | Hitachi Ltd | フライバックトランスの製造法 |
| JPS6131416A (ja) * | 1984-07-25 | 1986-02-13 | Hitachi Ltd | 熱硬化性レジン組成物 |
| US4668718A (en) * | 1984-10-05 | 1987-05-26 | Ciba-Geigy Corporation | Self-extinguishing, track-resistant epoxy resin moulding composition and use thereof |
| JPS61113641A (ja) * | 1984-11-09 | 1986-05-31 | Sumitomo Bakelite Co Ltd | 耐電食性用フエノ−ル樹脂組成物 |
| GB8610067D0 (en) * | 1986-04-24 | 1986-05-29 | Steetley Refractories Ltd | Coated magnesium hydroxide |
| JPS62290718A (ja) * | 1986-06-11 | 1987-12-17 | Hitachi Ltd | エポキシ樹脂組成物とこれらを用いてフライバツクトランスを製造する方法 |
| US4772654A (en) * | 1987-07-21 | 1988-09-20 | E. I. Du Pont De Nemours And Company | Fire resistant polymers containing magnesium oxychloride |
| FR2630578B1 (fr) * | 1988-04-22 | 1990-07-27 | France Transfo Sa | Transformateur sec enrobe a comportement au feu ameliore et procede de preparation de sa resine d'enrobage |
-
1988
- 1988-04-22 FR FR8805641A patent/FR2630578B1/fr not_active Expired - Lifetime
-
1989
- 1989-04-03 SE SE8901148A patent/SE508250C2/sv not_active IP Right Cessation
- 1989-04-04 CH CH1231/89A patent/CH678988A5/fr not_active IP Right Cessation
- 1989-04-06 LU LU87494A patent/LU87494A1/fr unknown
- 1989-04-14 IT IT8909403A patent/IT1234438B/it active
- 1989-04-14 BE BE8900417A patent/BE1006158A4/fr not_active IP Right Cessation
- 1989-04-14 ES ES8901315A patent/ES2010928A6/es not_active Expired
- 1989-04-17 NL NL8900954A patent/NL8900954A/nl not_active Application Discontinuation
- 1989-04-18 CA CA000597015A patent/CA1325072C/fr not_active Expired - Fee Related
- 1989-04-18 IE IE122989A patent/IE64367B1/en not_active IP Right Cessation
- 1989-04-19 DE DE3912874A patent/DE3912874C2/de not_active Expired - Fee Related
- 1989-04-20 AT AT0094689A patent/AT402242B/de not_active IP Right Cessation
- 1989-04-20 GB GB8909009A patent/GB2217719B/en not_active Expired - Lifetime
- 1989-04-20 DK DK192089A patent/DK192089A/da unknown
- 1989-04-21 PT PT90346A patent/PT90346B/pt not_active IP Right Cessation
- 1989-04-24 JP JP1104363A patent/JP2722405B2/ja not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3202947A (en) * | 1961-02-16 | 1965-08-24 | Jefferson Electric Co | Epoxy insulated transformer having tris-beta-chloroethylphosphate and hydrated alumina in the insulation |
| US3626083A (en) * | 1968-01-12 | 1971-12-07 | Westinghouse Electric Corp | High-voltage insulation and insulated high-voltage apparatus |
| US3733283A (en) * | 1971-05-10 | 1973-05-15 | Du Pont | Flameproof polylactam composition and process for its manufacture |
| US4059560A (en) * | 1976-05-05 | 1977-11-22 | The Firestone Tire & Rubber Company | Smoke and flame retarded styrene polymers |
| US4193908A (en) * | 1978-09-20 | 1980-03-18 | Aluminum Company Of America | Method of reducing the viscosity of polyester-alumina _trihydrate dispersions by slight dehydration of trihydrate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3912874C2 (de) | 1996-12-12 |
| SE8901148D0 (sv) | 1989-04-03 |
| CA1325072C (fr) | 1993-12-07 |
| ES2010928A6 (es) | 1989-12-01 |
| SE8901148L (sv) | 1989-10-23 |
| FR2630578B1 (fr) | 1990-07-27 |
| JPH0212904A (ja) | 1990-01-17 |
| GB2217719A (en) | 1989-11-01 |
| PT90346A (pt) | 1989-11-10 |
| IE64367B1 (en) | 1995-07-26 |
| DK192089A (da) | 1989-10-23 |
| GB8909009D0 (en) | 1989-06-07 |
| LU87494A1 (fr) | 1989-09-12 |
| IT8909403A0 (it) | 1989-04-14 |
| ATA94689A (de) | 1996-07-15 |
| SE508250C2 (sv) | 1998-09-21 |
| CH678988A5 (enrdf_load_stackoverflow) | 1991-11-29 |
| GB2217719B (en) | 1991-12-11 |
| IT1234438B (it) | 1992-05-18 |
| FR2630578A1 (fr) | 1989-10-27 |
| PT90346B (pt) | 1994-04-29 |
| NL8900954A (nl) | 1989-11-16 |
| DK192089D0 (da) | 1989-04-20 |
| IE891229L (en) | 1989-10-22 |
| AT402242B (de) | 1997-03-25 |
| JP2722405B2 (ja) | 1998-03-04 |
| DE3912874A1 (de) | 1989-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: *FRANCE TRANSFO Effective date: 20090414 |