FR851651A - Improvements in the fabrication of asymmetric conductivity devices - Google Patents

Improvements in the fabrication of asymmetric conductivity devices

Info

Publication number
FR851651A
FR851651A FR851651DA FR851651A FR 851651 A FR851651 A FR 851651A FR 851651D A FR851651D A FR 851651DA FR 851651 A FR851651 A FR 851651A
Authority
FR
France
Prior art keywords
fabrication
conductivity devices
asymmetric conductivity
asymmetric
devices
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
Other languages
French (fr)
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of FR851651A publication Critical patent/FR851651A/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
    • H01L21/06—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 selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
    • H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/10—Shape or structure of solid propellant charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • 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
    • H01L21/06—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 selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
    • H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
    • H01L21/105—Treatment of the surface of the selenium or tellurium layer after having been made conductive

Landscapes

  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Motor Or Generator Current Collectors (AREA)
FR851651D 1938-09-21 1938-09-21 Improvements in the fabrication of asymmetric conductivity devices Expired FR851651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR532961T 1938-09-21

Publications (1)

Publication Number Publication Date
FR851651A true FR851651A (en) 1940-01-12

Family

ID=8924756

Family Applications (1)

Application Number Title Priority Date Filing Date
FR851651D Expired FR851651A (en) 1938-09-21 1938-09-21 Improvements in the fabrication of asymmetric conductivity devices

Country Status (4)

Country Link
US (1) US2227827A (en)
DE (1) DE856664C (en)
FR (1) FR851651A (en)
GB (1) GB532961A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447630A (en) * 1943-11-10 1948-08-24 Westinghouse Electric Corp Method of making selenium rectifiers
NL70500C (en) * 1943-12-15 1900-01-01 Westinghouse Electric Corp
US2446467A (en) * 1944-11-11 1948-08-03 Fansteel Metallurgical Corp Dry plate rectifier
US2493241A (en) * 1944-11-11 1950-01-03 Fansteel Metallurgical Corp Dry plate selenium rectifier
US2446237A (en) * 1944-11-11 1948-08-03 Fansteel Metallurgical Corp Selenium rectifier
US2422192A (en) * 1944-11-11 1947-06-17 Selenium rectifier disc
BE461942A (en) * 1944-11-20
US2450886A (en) * 1944-11-20 1948-10-12 Standard Telephones Cables Ltd Semiconductor
BE476268A (en) * 1945-05-12
US2554237A (en) * 1945-10-29 1951-05-22 Westinghouse Electric Corp Rectifier
US2507782A (en) * 1946-02-23 1950-05-16 Radio Receptor Company Inc Rectifiers
US2766210A (en) * 1949-05-06 1956-10-09 Sylvania Electric Prod Manufacture of selenium elements
US2659846A (en) * 1951-05-15 1953-11-17 Int Rectifier Corp Selenium element and method of making it
NL93089C (en) * 1953-02-03
US3127545A (en) * 1960-12-23 1964-03-31 Gen Telephone & Elect Rectifier
US3226610A (en) * 1962-03-01 1965-12-28 Jr George G Harman Constant-current semiconductor device
WO2004024035A1 (en) * 2002-09-13 2004-03-25 Ocular Sciences, Inc. Devices and methods for improving vision
EP1776148B1 (en) * 2004-08-13 2019-03-06 Ottawa Hospital Research Institute Ophthalmic devices and related methods and compositions
US7802592B2 (en) 2006-04-18 2010-09-28 Fisher Controls International, Llc Fluid pressure reduction devices

Also Published As

Publication number Publication date
US2227827A (en) 1941-01-07
GB532961A (en) 1941-02-04
DE856664C (en) 1952-11-24

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