CA1087073A - Cartridge and furnace for crystal growth - Google Patents
Cartridge and furnace for crystal growthInfo
- Publication number
- CA1087073A CA1087073A CA277,265A CA277265A CA1087073A CA 1087073 A CA1087073 A CA 1087073A CA 277265 A CA277265 A CA 277265A CA 1087073 A CA1087073 A CA 1087073A
- Authority
- CA
- Canada
- Prior art keywords
- heat
- die
- cartridge
- conductive
- furnace
- 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
- 239000013078 crystal Substances 0.000 title claims abstract description 59
- 230000012010 growth Effects 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 29
- 239000000155 melt Substances 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 239000012809 cooling fluid Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 11
- 239000010439 graphite Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000000112 cooling gas Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- CBQYNPHHHJTCJS-UHFFFAOYSA-N Alline Chemical compound C1=CC=C2C3(O)CCN(C)C3NC2=C1 CBQYNPHHHJTCJS-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical compound COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000036433 growing body Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/30—Mechanisms for rotating or moving either the melt or the crystal
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/002—Continuous growth
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/005—Simultaneous pulling of more than one crystal
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/14—Heating of the melt or the crystallised materials
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/20—Controlling or regulating
- C30B15/22—Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal
- C30B15/24—Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal using mechanical means, e.g. shaping guides
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
- C30B15/34—Edge-defined film-fed crystal-growth using dies or slits
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1032—Seed pulling
- Y10T117/1036—Seed pulling including solid member shaping means other than seed or product [e.g., EDFG die]
- Y10T117/1044—Seed pulling including solid member shaping means other than seed or product [e.g., EDFG die] including means forming a flat shape [e.g., ribbon]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1032—Seed pulling
- Y10T117/1068—Seed pulling including heating or cooling details [e.g., shield configuration]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1032—Seed pulling
- Y10T117/1072—Seed pulling including details of means providing product movement [e.g., shaft guides, servo means]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/761,941 US4118197A (en) | 1977-01-24 | 1977-01-24 | Cartridge and furnace for crystal growth |
| US761,941 | 1977-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1087073A true CA1087073A (en) | 1980-10-07 |
Family
ID=25063674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA277,265A Expired CA1087073A (en) | 1977-01-24 | 1977-04-28 | Cartridge and furnace for crystal growth |
Country Status (10)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335081A (en) * | 1979-01-15 | 1982-06-15 | Mobil Tyco Solar Energy Corporation | Crystal growth furnace with trap doors |
| US4271129A (en) | 1979-03-06 | 1981-06-02 | Rca Corporation | Heat radiation deflectors within an EFG crucible |
| US4415401A (en) * | 1980-03-10 | 1983-11-15 | Mobil Solar Energy Corporation | Control of atmosphere surrounding crystal growth zone |
| US4267010A (en) * | 1980-06-16 | 1981-05-12 | Mobil Tyco Solar Energy Corporation | Guidance mechanism |
| US4443411A (en) * | 1980-12-15 | 1984-04-17 | Mobil Solar Energy Corporation | Apparatus for controlling the atmosphere surrounding a crystal growth zone |
| US4390505A (en) * | 1981-03-30 | 1983-06-28 | Mobil Solar Energy Corporation | Crystal growth apparatus |
| US4410494A (en) * | 1981-04-13 | 1983-10-18 | Siltec Corporation | Apparatus for controlling flow of molten material between crystal growth furnaces and a replenishment crucible |
| DE3890206C2 (de) * | 1987-03-27 | 2001-05-17 | Ase Americas Inc N D Ges D Sta | Verfahren und Vorrichtung zum Ziehen eines hohlen Kristallkörpers |
| US4937053A (en) * | 1987-03-27 | 1990-06-26 | Mobil Solar Energy Corporation | Crystal growing apparatus |
| EP0437775B1 (en) * | 1989-12-22 | 1995-03-08 | Shin-Etsu Handotai Company Limited | Apparatus for producing Czochralski-grown single crystals |
| US5037622A (en) * | 1990-07-13 | 1991-08-06 | Mobil Solar Energy Corporation | Wet-tip die for EFG crystal growth apparatus |
| US6602345B1 (en) | 1999-06-29 | 2003-08-05 | American Crystal Technologies, Inc., | Heater arrangement for crystal growth furnace |
| US6537372B1 (en) | 1999-06-29 | 2003-03-25 | American Crystal Technologies, Inc. | Heater arrangement for crystal growth furnace |
| WO2005100644A1 (en) * | 2004-04-15 | 2005-10-27 | Faculdade De Ciências Da Universidade De Lisboa | Method for the growth of semiconductor ribbons |
| US7959732B1 (en) * | 2005-06-17 | 2011-06-14 | Saint-Gobain Ceramics & Plastics, Inc. | Apparatus and method for monitoring and controlling crystal growth |
| KR20100019536A (ko) * | 2007-06-14 | 2010-02-18 | 에버그린 솔라, 인크. | 적어도 1개의 개구를 구비한 리본 결정 풀링 노 여열기 |
| EP2207910A1 (en) * | 2007-08-31 | 2010-07-21 | Faculdade de Ciencias da Universidade de Lisboa | Method for the production of semiconductor ribbons from a gaseous feedstock |
| CN102124150B (zh) | 2008-08-18 | 2013-07-31 | 长青太阳能股份有限公司 | 控制气载污染物跨晶带表面的转移 |
| US8263914B2 (en) * | 2008-08-27 | 2012-09-11 | AMG IdealCast Corporation | Cartridge heater and method of use |
| US9206525B2 (en) | 2011-11-30 | 2015-12-08 | General Electric Company | Method for configuring a system to grow a crystal by coupling a heat transfer device comprising at least one elongate member beneath a crucible |
| WO2016100031A1 (en) * | 2014-12-15 | 2016-06-23 | Corning Incorporated | Method and apparatus for locating a preform on a mold |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2927008A (en) * | 1956-10-29 | 1960-03-01 | Shockley Transistor Corp | Crystal growing apparatus |
| DE1090868B (de) * | 1958-10-15 | 1960-10-13 | Siemens Ag | Verfahren zum Ziehen von einkristallinen Halbleiterstaeben aus Schmelzen |
| US3124489A (en) * | 1960-05-02 | 1964-03-10 | Method of continuously growing thin strip crystals | |
| DE1193475B (de) * | 1962-08-23 | 1965-05-26 | Westinghouse Electric Corp | Vorrichtung zum Drehen, Heben und Senken des Tiegels beim Ziehen von dendritischen Einkristallen |
| US3291571A (en) * | 1963-12-23 | 1966-12-13 | Gen Motors Corp | Crystal growth |
| US3265469A (en) * | 1964-09-21 | 1966-08-09 | Gen Electric | Crystal growing apparatus |
| US3453352A (en) * | 1964-12-14 | 1969-07-01 | Texas Instruments Inc | Method and apparatus for producing crystalline semiconductor ribbon |
| US3471266A (en) * | 1967-05-29 | 1969-10-07 | Tyco Laboratories Inc | Growth of inorganic filaments |
| US3650703A (en) * | 1967-09-08 | 1972-03-21 | Tyco Laboratories Inc | Method and apparatus for growing inorganic filaments, ribbon from the melt |
| US3591348A (en) * | 1968-01-24 | 1971-07-06 | Tyco Laboratories Inc | Method of growing crystalline materials |
| US3701636A (en) * | 1970-09-23 | 1972-10-31 | Tyco Laboratories Inc | Crystal growing apparatus |
| BE811057A (fr) * | 1974-02-15 | 1974-08-16 | Elphiac Sa | Machine universelle pour l'elaboration de monocristaux de materiaux semiconducteurs ou autres suivant les methodes classiques. |
| US3961905A (en) * | 1974-02-25 | 1976-06-08 | Corning Glass Works | Crucible and heater assembly for crystal growth from a melt |
| DE2557186A1 (de) * | 1975-12-18 | 1977-06-23 | Siemens Ag | Verfahren und vorrichtung zum herstellen von halbleitermaterialstaeben, insbesondere von siliciumstaeben mit grossen durchmessern, durch tiegelfreies zonenschmelzen |
-
1977
- 1977-01-24 US US05/761,941 patent/US4118197A/en not_active Expired - Lifetime
- 1977-04-28 CA CA277,265A patent/CA1087073A/en not_active Expired
- 1977-04-29 GB GB17932/77A patent/GB1539125A/en not_active Expired
- 1977-04-29 GB GB19145/78A patent/GB1539126A/en not_active Expired
- 1977-04-30 IN IN651/CAL/77A patent/IN147431B/en unknown
- 1977-05-03 IL IL51999A patent/IL51999A/xx unknown
- 1977-05-04 AU AU24840/77A patent/AU509354B2/en not_active Expired
- 1977-05-16 NL NL7705395A patent/NL7705395A/xx not_active Application Discontinuation
- 1977-05-20 JP JP52058561A patent/JPS597676B2/ja not_active Expired
- 1977-05-26 FR FR7716200A patent/FR2377841A1/fr active Granted
- 1977-07-04 DE DE19772730161 patent/DE2730161A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4118197A (en) | 1978-10-03 |
| GB1539126A (en) | 1979-01-24 |
| DE2730161A1 (de) | 1978-07-27 |
| AU509354B2 (en) | 1980-05-08 |
| NL7705395A (nl) | 1978-07-26 |
| DE2730161C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-02-21 |
| JPS5393183A (en) | 1978-08-15 |
| FR2377841B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1983-12-16 |
| JPS597676B2 (ja) | 1984-02-20 |
| IL51999A (en) | 1980-07-31 |
| GB1539125A (en) | 1979-01-24 |
| IN147431B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-02-23 |
| IL51999A0 (en) | 1977-07-31 |
| AU2484077A (en) | 1978-11-09 |
| FR2377841A1 (fr) | 1978-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |