CH460186A - Process for carburizing an electrode at least one portion of which contains thorium oxide on the surface - Google Patents

Process for carburizing an electrode at least one portion of which contains thorium oxide on the surface

Info

Publication number
CH460186A
CH460186A CH486267A CH486267A CH460186A CH 460186 A CH460186 A CH 460186A CH 486267 A CH486267 A CH 486267A CH 486267 A CH486267 A CH 486267A CH 460186 A CH460186 A CH 460186A
Authority
CH
Switzerland
Prior art keywords
carburizing
electrode
thorium oxide
contains thorium
oxide
Prior art date
Application number
CH486267A
Other languages
French (fr)
Inventor
Taxil Andre
Original Assignee
Claude Paz & Visseaux
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 Claude Paz & Visseaux filed Critical Claude Paz & Visseaux
Publication of CH460186A publication Critical patent/CH460186A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
CH486267A 1966-04-18 1967-04-06 Process for carburizing an electrode at least one portion of which contains thorium oxide on the surface CH460186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR57986A FR1489755A (en) 1966-04-18 1966-04-18 Process for the fuel treatment of a thorium oxide electrode

Publications (1)

Publication Number Publication Date
CH460186A true CH460186A (en) 1968-07-31

Family

ID=8606469

Family Applications (1)

Application Number Title Priority Date Filing Date
CH486267A CH460186A (en) 1966-04-18 1967-04-06 Process for carburizing an electrode at least one portion of which contains thorium oxide on the surface

Country Status (5)

Country Link
US (1) US3510190A (en)
BE (1) BE693505A (en)
CH (1) CH460186A (en)
FR (1) FR1489755A (en)
GB (1) GB1166927A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846006A (en) * 1972-02-24 1974-11-05 Picker Corp Method of manufacturing of x-ray tube having thoriated tungsten filament
US5001397A (en) * 1985-07-17 1991-03-19 U.S. Philips Corporation High-pressure gas discharge lamp having electrodes with coil layers having interlocking turns

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1704981A (en) * 1927-08-26 1929-03-12 Lebrun Paul Francois Joseph Method of preparing luminescent tubes
US2401040A (en) * 1942-10-05 1946-05-28 Eitel Mccullough Inc Method of making electronic tubes
US2324559A (en) * 1943-04-05 1943-07-20 Machlett Lab Inc Manufacture of vacuum apparatus
US2591474A (en) * 1950-05-26 1952-04-01 Raytheon Mfg Co Cold cathode discharge device

Also Published As

Publication number Publication date
FR1489755A (en) 1967-07-28
GB1166927A (en) 1969-10-15
DE1589111A1 (en) 1970-03-19
BE693505A (en) 1967-08-01
DE1589111B2 (en) 1975-10-30
US3510190A (en) 1970-05-05

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