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GB690240A - Improvements relating to the manufacture of dry rectifiers - Google Patents

Improvements relating to the manufacture of dry rectifiers

Info

Publication number
GB690240A
GB690240A GB22843/50A GB2284350A GB690240A GB 690240 A GB690240 A GB 690240A GB 22843/50 A GB22843/50 A GB 22843/50A GB 2284350 A GB2284350 A GB 2284350A GB 690240 A GB690240 A GB 690240A
Authority
GB
United Kingdom
Prior art keywords
mould
casting
projections
charge
holders
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
Application number
GB22843/50A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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 to BE505850D priority Critical patent/BE505850A/xx
Priority to NL81435D priority patent/NL81435C/xx
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB22843/50A priority patent/GB690240A/en
Priority to FR1039807D priority patent/FR1039807A/fr
Priority to US236972A priority patent/US2667722A/en
Publication of GB690240A publication Critical patent/GB690240A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • 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
    • C30B11/00Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10DINORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D99/00Subject matter not provided for in other groups of this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Rectifiers (AREA)
GB22843/50A 1950-09-18 1950-09-18 Improvements relating to the manufacture of dry rectifiers Expired GB690240A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE505850D BE505850A (fr) 1950-09-18
NL81435D NL81435C (fr) 1950-09-18
GB22843/50A GB690240A (en) 1950-09-18 1950-09-18 Improvements relating to the manufacture of dry rectifiers
FR1039807D FR1039807A (fr) 1950-09-18 1951-07-12 Procédé de fabrication de redresseurs secs
US236972A US2667722A (en) 1950-09-18 1951-07-16 Mold for use in the manufacture of dry rectifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22843/50A GB690240A (en) 1950-09-18 1950-09-18 Improvements relating to the manufacture of dry rectifiers

Publications (1)

Publication Number Publication Date
GB690240A true GB690240A (en) 1953-04-15

Family

ID=10185941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22843/50A Expired GB690240A (en) 1950-09-18 1950-09-18 Improvements relating to the manufacture of dry rectifiers

Country Status (5)

Country Link
US (1) US2667722A (fr)
BE (1) BE505850A (fr)
FR (1) FR1039807A (fr)
GB (1) GB690240A (fr)
NL (1) NL81435C (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002320A (en) * 1951-11-16 1961-10-03 Bell Telephone Labor Inc Preparation of silicon material
US2864139A (en) * 1953-05-19 1958-12-16 Texas Instruments Inc Method and apparatus for producing intermediate semi-conductor product
US2875556A (en) * 1953-07-31 1959-03-03 Vig Corp Apparatus for molding refractory materials
US2778162A (en) * 1954-04-12 1957-01-22 Corning Glass Works Centrifugal casting of glass articles
US2825549A (en) * 1954-12-28 1958-03-04 Itt Mold for semi-conductor ingots
US3156549A (en) * 1958-04-04 1964-11-10 Du Pont Method of melting silicon

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581829A (en) * 1921-03-29 1926-04-20 Gen Electric Quartz working
US1536821A (en) * 1924-09-27 1925-05-05 Gen Electric Apparatus for and method of making vitreous silica
US1601123A (en) * 1926-05-20 1926-09-28 Joseph L King Holder for automobile license plates
US1908086A (en) * 1927-12-10 1933-05-09 Leonard H Mattingly Method of making a universal joint
US1966615A (en) * 1929-11-21 1934-07-17 Croning Johannes Metal casting process
US2048319A (en) * 1933-02-25 1936-07-21 Carborundum Co Method of producing cast refractory and similar articles
US2277014A (en) * 1940-07-06 1942-03-17 Electric Railway Improvement Co Rail bonding apparatus
NL84010C (fr) * 1940-10-24
US2276823A (en) * 1940-12-13 1942-03-17 Electric Railway Improvement Co Rail bonding apparatus
BE460645A (fr) * 1943-05-01

Also Published As

Publication number Publication date
US2667722A (en) 1954-02-02
BE505850A (fr)
NL81435C (fr)
FR1039807A (fr) 1953-10-09

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