US1811603A - Manufacture of electrical rectifiers - Google Patents

Manufacture of electrical rectifiers Download PDF

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Publication number
US1811603A
US1811603A US391985A US39198529A US1811603A US 1811603 A US1811603 A US 1811603A US 391985 A US391985 A US 391985A US 39198529 A US39198529 A US 39198529A US 1811603 A US1811603 A US 1811603A
Authority
US
United States
Prior art keywords
copper
blank
oxide
manufacture
bath
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 - Lifetime
Application number
US391985A
Other languages
English (en)
Inventor
Donald G Ackerly
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.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
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 BE373316D priority Critical patent/BE373316A/xx
Priority to US926132D priority patent/UST926132I4/en
Application filed by Union Switch and Signal Inc filed Critical Union Switch and Signal Inc
Priority to US391986A priority patent/US1926132A/en
Priority to US391985A priority patent/US1811603A/en
Priority to DE1930543994D priority patent/DE543994C/de
Priority to GB24806/30A priority patent/GB367749A/en
Priority to FR701789D priority patent/FR701789A/fr
Application granted granted Critical
Publication of US1811603A publication Critical patent/US1811603A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01L21/165—Reduction of the copper oxide, treatment of the oxide layer
    • 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
    • H01L21/167—Application of a non-genetic conductive layer

Definitions

  • My invention relates to the manufacture of electrical rectifiers of the type disclosed and claimed in Letters Patent of the United States, No. 1640335, granted to L. O. Gron- 4? dahl on August 23, 1927.
  • One object of my invention is the provision of novel and improved means for producing metallic copper on the outer surface of the copper oxide in rectifiers of the type referred
  • the treated blank is then placed in a bath of molten metal to reduce the outer layer of the oxide to copper.
  • This molten metal may, for example, be molten lead, in whichcase the bath should be at a temperature of 500 C. to 600 C.
  • the purpose of producin the layer of copper on the outer surface 0 the copper oxide is, of course, to make it possible to readily make electrical contact with the cuprous oxide.
  • ide rectifiers involves removing the treated blanks from the oxidizing furnace to a second furnace maintained at approximately 500 to 600 (3., and quenching the blanks in water after they have reached approximagaly ne reason for maintaining the reducing bath of my invention at 500 to 600 C. is to make this bath serve the purpose also of the second furnace, so that the blanks may be uenched in water directly from the reducin ath.
  • the process 0 producing a rectifier unit which consists in heating a copper blank to approximately 1000 C. to form cuprous oxide thereon, placing the treated blank in a bath of molten metal maintained at approximately 500 to 600 C. to reduce the outer surface of the oxide to copper, and then quenching the blank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Biotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Braking Arrangements (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Coating With Molten Metal (AREA)
US391985A 1929-09-11 1929-09-11 Manufacture of electrical rectifiers Expired - Lifetime US1811603A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE373316D BE373316A (fr) 1929-09-11
US926132D UST926132I4 (fr) 1929-09-11
US391986A US1926132A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers
US391985A US1811603A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers
DE1930543994D DE543994C (de) 1929-09-11 1930-08-14 Verfahren zur Herstellung von Gleichrichterelementen
GB24806/30A GB367749A (en) 1929-09-11 1930-08-19 Improvements relating to electrical current rectifying devices
FR701789D FR701789A (fr) 1929-09-11 1930-09-08 Perfectionnements dans les redresseurs de courant électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US391986A US1926132A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers
US391985A US1811603A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers

Publications (1)

Publication Number Publication Date
US1811603A true US1811603A (en) 1931-06-23

Family

ID=27013711

Family Applications (3)

Application Number Title Priority Date Filing Date
US926132D Pending UST926132I4 (fr) 1929-09-11
US391985A Expired - Lifetime US1811603A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers
US391986A Expired - Lifetime US1926132A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US926132D Pending UST926132I4 (fr) 1929-09-11

Family Applications After (1)

Application Number Title Priority Date Filing Date
US391986A Expired - Lifetime US1926132A (en) 1929-09-11 1929-09-11 Manufacture of electrical rectifiers

Country Status (5)

Country Link
US (3) US1811603A (fr)
BE (1) BE373316A (fr)
DE (1) DE543994C (fr)
FR (1) FR701789A (fr)
GB (1) GB367749A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899345A (en) * 1959-08-11 Method of making titanium dioxide capacitors
US4328048A (en) * 1979-08-30 1982-05-04 Murata Manufacturing Co., Ltd. Method of forming copper conductor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496721A (en) * 1945-10-19 1950-02-07 Westinghouse Electric Corp Rectifier
BE509424A (fr) * 1951-02-23
US2701285A (en) * 1951-04-03 1955-02-01 Gen Electric Electric cutout
US2946727A (en) * 1955-10-20 1960-07-26 Condenser Machinery Corp Method for making electrolytic condensers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899345A (en) * 1959-08-11 Method of making titanium dioxide capacitors
US4328048A (en) * 1979-08-30 1982-05-04 Murata Manufacturing Co., Ltd. Method of forming copper conductor

Also Published As

Publication number Publication date
FR701789A (fr) 1931-03-21
GB367749A (en) 1932-02-25
BE373316A (fr)
DE543994C (de) 1932-02-12
UST926132I4 (fr)
US1926132A (en) 1933-09-12

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