FR952558A - Process for manufacturing oxide cathodes for discharge tubes and cathodes thus obtained - Google Patents

Process for manufacturing oxide cathodes for discharge tubes and cathodes thus obtained

Info

Publication number
FR952558A
FR952558A FR952558DA FR952558A FR 952558 A FR952558 A FR 952558A FR 952558D A FR952558D A FR 952558DA FR 952558 A FR952558 A FR 952558A
Authority
FR
France
Prior art keywords
cathodes
discharge tubes
manufacturing oxide
manufacturing
oxide cathodes
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR952558A publication Critical patent/FR952558A/en
Expired legal-status Critical Current

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)
  • Solid Thermionic Cathode (AREA)
FR952558D 1946-08-30 1947-08-28 Process for manufacturing oxide cathodes for discharge tubes and cathodes thus obtained Expired FR952558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL270673X 1946-08-30

Publications (1)

Publication Number Publication Date
FR952558A true FR952558A (en) 1949-11-21

Family

ID=19781917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR952558D Expired FR952558A (en) 1946-08-30 1947-08-28 Process for manufacturing oxide cathodes for discharge tubes and cathodes thus obtained

Country Status (5)

Country Link
BE (1) BE475719A (en)
CH (1) CH270673A (en)
FR (1) FR952558A (en)
GB (1) GB656522A (en)
NL (1) NL74345C (en)

Also Published As

Publication number Publication date
GB656522A (en) 1951-08-22
BE475719A (en)
CH270673A (en) 1950-09-15
NL74345C (en)

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