CH416572A - Verfahren zur Herstellung von Einkristallen aus Halbleitermaterial - Google Patents

Verfahren zur Herstellung von Einkristallen aus Halbleitermaterial

Info

Publication number
CH416572A
CH416572A CH6623558A CH6623558A CH416572A CH 416572 A CH416572 A CH 416572A CH 6623558 A CH6623558 A CH 6623558A CH 6623558 A CH6623558 A CH 6623558A CH 416572 A CH416572 A CH 416572A
Authority
CH
Switzerland
Prior art keywords
production
semiconductor material
single crystals
crystals
semiconductor
Prior art date
Application number
CH6623558A
Other languages
English (en)
Inventor
Frank Sterling Henley
John Raymond Frederick
Original Assignee
Standard Telephon & Radio Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB7540/57A external-priority patent/GB827676A/en
Priority claimed from GB3627257A external-priority patent/GB871156A/en
Priority claimed from GB829558A external-priority patent/GB871157A/en
Priority claimed from GB949458A external-priority patent/GB875592A/en
Priority claimed from GB18772/58A external-priority patent/GB899287A/en
Application filed by Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH416572A publication Critical patent/CH416572A/de

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/22Furnaces without an endless core
    • H05B6/32Arrangements for simultaneous levitation and heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J6/00Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/005Fusing
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/02Silicon
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/02Silicon
    • C01B33/021Preparation
    • C01B33/027Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material
    • C01B33/029Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition of monosilane
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00Boron; Compounds thereof
    • C01B35/02Boron; Borides
    • C01B35/023Boron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/10Obtaining titanium, zirconium or hafnium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B41/00Obtaining germanium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B60/00Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
    • C22B60/02Obtaining thorium, uranium, or other actinides
    • C22B60/0204Obtaining thorium, uranium, or other actinides obtaining uranium
    • C22B60/0286Obtaining thorium, uranium, or other actinides obtaining uranium refining, melting, remelting, working up uranium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/14Crucibles or vessels
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16Heating of the molten zone
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16Heating of the molten zone
    • C30B13/18Heating of the molten zone the heating element being in contact with, or immersed in, the molten zone
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16Heating of the molten zone
    • C30B13/20Heating of the molten zone by induction, e.g. hot wire technique
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B15/00Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/10Crucibles or containers for supporting the melt
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B15/00Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/14Heating of the melt or the crystallised materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085Arc furnaces
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S117/00Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10S117/90Apparatus characterized by composition or treatment thereof, e.g. surface finish, surface coating
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T117/00Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10T117/10Apparatus
    • Y10T117/1024Apparatus for crystallization from liquid or supercritical state
    • Y10T117/1076Apparatus for crystallization from liquid or supercritical state having means for producing a moving solid-liquid-solid zone
    • Y10T117/108Including a solid member other than seed or product contacting the liquid [e.g., crucible, immersed heating element]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Thermal Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Silicon Compounds (AREA)
CH6623558A 1957-03-07 1958-11-17 Verfahren zur Herstellung von Einkristallen aus Halbleitermaterial CH416572A (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB7540/57A GB827676A (en) 1957-03-07 1957-03-07 Method and apparatus for heat treating semi-conductor material
GB3627257A GB871156A (en) 1957-11-21 1957-11-21 Improvements in or relating to growing monocrystals of semiconductor material
GB37764/57A GB889615A (en) 1957-03-07 1957-12-04 Method and apparatus for processing metals
GB829558A GB871157A (en) 1958-03-14 1958-03-14 Improvements in or relating to apparatus for processing fusible materials
GB949458A GB875592A (en) 1958-03-25 1958-03-25 Improvements in or relating to methods and apparatus for melting materials
GB18772/58A GB899287A (en) 1958-06-12 1958-06-12 Method and apparatus for heat treating fusible material

Publications (1)

Publication Number Publication Date
CH416572A true CH416572A (de) 1966-07-15

Family

ID=27546551

Family Applications (3)

Application Number Title Priority Date Filing Date
CH5587358A CH385794A (de) 1957-03-07 1958-02-15 Verfahren zur Behandlung von schmelzbarem Material
CH6623558A CH416572A (de) 1957-03-07 1958-11-17 Verfahren zur Herstellung von Einkristallen aus Halbleitermaterial
CH6663958A CH435757A (de) 1957-03-07 1958-11-27 Verfahren zur Wärmebehandlung von Metallen bzw. Metallegierungen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH5587358A CH385794A (de) 1957-03-07 1958-02-15 Verfahren zur Behandlung von schmelzbarem Material

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH6663958A CH435757A (de) 1957-03-07 1958-11-27 Verfahren zur Wärmebehandlung von Metallen bzw. Metallegierungen

Country Status (7)

Country Link
US (1) US3172734A (de)
BE (1) BE565404A (de)
CH (3) CH385794A (de)
DE (4) DE1164982B (de)
FR (1) FR1192712A (de)
GB (1) GB889615A (de)
NL (7) NL233434A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796548A (en) * 1971-09-13 1974-03-12 Ibm Boat structure in an apparatus for making semiconductor compound single crystals
FR2512066B1 (fr) * 1981-09-03 1986-05-16 Cogema Procede de separation physique d'une phase metallique et de scories dans un four a induction

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518499C (de) * 1926-11-02 1931-02-16 Siemens & Halske Akt Ges Verfahren zum Schmelzen schwerschmelzbarer Metalle, insbesondere von Tantal, Wolfram, Thorium oder Legierungen dieser Metalle in einem wassergekuehlten Behaelter
DE536300C (de) * 1929-09-04 1931-10-22 Hirsch Kupfer Und Messingwerke Verfahren und Vorrichtung zum Betriebe elektrischer Induktionsoefen
DE903266C (de) * 1941-04-05 1954-02-04 Aeg Elektrischer Induktionsofen zum Schmelzen von Magnesium und seinen Legierungen
US2541764A (en) * 1948-04-15 1951-02-13 Battelle Development Corp Electric apparatus for melting refractory metals
US2768074A (en) * 1949-09-24 1956-10-23 Nat Res Corp Method of producing metals by decomposition of halides
US2686865A (en) * 1951-10-20 1954-08-17 Westinghouse Electric Corp Stabilizing molten material during magnetic levitation and heating thereof
BE510303A (de) * 1951-11-16
US2785058A (en) * 1952-04-28 1957-03-12 Bell Telephone Labor Inc Method of growing quartz crystals
DE968582C (de) * 1952-08-07 1958-03-06 Telefunken Gmbh Verfahren zur Bereitung einer Schmelze eines bei gewoehnlicher Temperatur halbleitenden Materials
US2719799A (en) * 1952-11-13 1955-10-04 Rca Corp Zone melting furnace and method of zone melting
GB734973A (en) * 1953-04-30 1955-08-10 Gen Electric Co Ltd Improvements in or relating to fractional fusion methods
BE528916A (de) * 1953-05-18
DE975708C (de) * 1953-08-12 1962-06-14 Standard Elek K Lorenz Ag Verdampfer zur Verdampfung von Metallen, insbesondere im Hochvakuum
US2872299A (en) * 1954-11-30 1959-02-03 Rca Corp Preparation of reactive materials in a molten non-reactive lined crucible
DE1007885B (de) * 1955-07-28 1957-05-09 Siemens Ag Heizanordnung fuer Halbleiterkristall-Zieheinrichtungen, welche vorzugsweise nach dem Schmelzzonenverfahren arbeiten
US2836412A (en) * 1955-08-22 1958-05-27 Titanium Metals Corp Arc melting crucible
FR1141561A (fr) * 1956-01-20 1957-09-04 Cedel Procédé et moyens pour la fabrication de matériaux semi-conducteurs
US2870309A (en) * 1957-06-11 1959-01-20 Emil R Capita Zone purification device
US2897329A (en) * 1957-09-23 1959-07-28 Sylvania Electric Prod Zone melting apparatus

Also Published As

Publication number Publication date
CH385794A (de) 1964-12-31
NL114078C (de) 1900-01-01
BE565404A (de) 1958-09-05
NL239559A (de) 1900-01-01
DE1191970B (de) 1965-04-29
DE1164982B (de) 1964-03-12
US3172734A (en) 1965-03-09
NL237042A (de) 1900-01-01
NL113928C (de) 1900-01-01
NL233434A (de) 1900-01-01
GB889615A (en) 1962-02-21
FR1192712A (fr) 1959-10-28
NL236919A (de) 1900-01-01
NL225605A (de) 1900-01-01
DE1226539B (de) 1966-10-13
DE1293934B (de) 1969-04-30
CH435757A (de) 1967-05-15

Similar Documents

Publication Publication Date Title
CH417086A (de) Verfahren zur Herstellung von Elastomeren
CH440235A (de) Verfahren zur Herstellung von Diamantkristallen
CH417543A (de) Verfahren zur Herstellung von Stäben aus Halbleitersubstanz
CH383624A (de) Verfahren zur Herstellung von Polyamidformkörpern
CH442242A (de) Verfahren zur Herstellung von hochreinen Elementen
CH425738A (de) Verfahren zur Gewinnung von kristallinem Halbleitermaterial
CH362485A (de) Verfahren zur Herstellung von Spinndüsen
CH357121A (de) Verfahren zur Herstellung von Halbleiteranordnungen
CH429673A (de) Verfahren zur Abscheidung von Halbleitermaterial
CH375001A (de) Verfahren zur Herstellung von 6-Halogen-steroiden
CH370394A (de) Verfahren zur Herstellung von Monoperschwefelsäure
CH446723A (de) Verfahren zur Herstellung von schaumförmigen Polyamiden
CH384863A (de) Verfahren zur Herstellung geformter Gebilde aus kristallisierenden Kunststoffen
CH371791A (de) Verfahren zur Herstellung von reinstem Silizium
CH364244A (de) Verfahren zur Herstellung von Halbleitereinkristallen
CH394607A (de) Verfahren zur Herstellung von stabilisierten Polyamiden
CH367385A (de) Verfahren zur Herstellung von nichttextilen Gebilden
CH416572A (de) Verfahren zur Herstellung von Einkristallen aus Halbleitermaterial
CH382296A (de) Verfahren zur Herstellung von einkristallinem Halbleitermaterial
CH388908A (de) Verfahren zur Herstellung von relativ grossen und dünnen Halbleiter-Einkristallen
CH438711A (de) Verfahren zur Herstellung von geformten Vulkanisaten
CH370089A (de) Verfahren zur Herstellung von Hydantoinen
CH408629A (de) Verfahren zur Herstellung von Flächengebilden aus Fasermaterial
CH348208A (de) Verfahren zur Herstellung von Halbleiteranordnungen
CH346294A (de) Verfahren zur Herstellung von Halbleitergleichrichtern