GB514751A - Improvements in the manufacture of alternating current rectifiers of the dry surface contact type - Google Patents

Improvements in the manufacture of alternating current rectifiers of the dry surface contact type

Info

Publication number
GB514751A
GB514751A GB14443/38A GB1444338A GB514751A GB 514751 A GB514751 A GB 514751A GB 14443/38 A GB14443/38 A GB 14443/38A GB 1444338 A GB1444338 A GB 1444338A GB 514751 A GB514751 A GB 514751A
Authority
GB
United Kingdom
Prior art keywords
manufacture
alternating current
surface contact
contact type
dry surface
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
GB14443/38A
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
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB14443/38A priority Critical patent/GB514751A/en
Priority to US270200A priority patent/US2211188A/en
Priority to FR871351D priority patent/FR871351A/en
Publication of GB514751A publication Critical patent/GB514751A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/16—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising cuprous oxide or cuprous iodide
    • H01L21/161—Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment
    • H01L21/164—Oxidation and subsequent heat treatment of the foundation plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02518—Deposited layers
    • H01L21/02521—Materials
    • H01L21/02565—Oxide semiconducting materials not being Group 12/16 materials, e.g. ternary compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02518—Deposited layers
    • H01L21/0257—Doping during depositing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02612—Formation types
    • H01L21/02614—Transformation of metal, e.g. oxidation, nitridation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Thermistors And Varistors (AREA)

Abstract

514,751. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., WILLIAMS, A. L., and THOMPSON, L. E. May 14, 1938, No. 14443. [Class 37] In the manufacture of rectifiers of the copper-oxide type, the element boron, or its compounds, is introduced into the oxidizing furnace either in the form of vapour or in a suitable receptacle in the furnace chamber. The metal blanks or their supports may be previously immersed in a solution of a boron compound.
GB14443/38A 1938-05-14 1938-05-14 Improvements in the manufacture of alternating current rectifiers of the dry surface contact type Expired GB514751A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB14443/38A GB514751A (en) 1938-05-14 1938-05-14 Improvements in the manufacture of alternating current rectifiers of the dry surface contact type
US270200A US2211188A (en) 1938-05-14 1939-04-26 Manufacture of alternating current rectifiers of the dry surface contact type
FR871351D FR871351A (en) 1938-05-14 1939-05-11 Improvements in the fabrication of asymmetric conductivity devices of the dry surface contact type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14443/38A GB514751A (en) 1938-05-14 1938-05-14 Improvements in the manufacture of alternating current rectifiers of the dry surface contact type

Publications (1)

Publication Number Publication Date
GB514751A true GB514751A (en) 1939-11-16

Family

ID=10041282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14443/38A Expired GB514751A (en) 1938-05-14 1938-05-14 Improvements in the manufacture of alternating current rectifiers of the dry surface contact type

Country Status (3)

Country Link
US (1) US2211188A (en)
FR (1) FR871351A (en)
GB (1) GB514751A (en)

Also Published As

Publication number Publication date
US2211188A (en) 1940-08-13
FR871351A (en) 1942-04-22

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