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GB806032A - A process for the production of a hot cathode for thermionic tubes - Google Patents

A process for the production of a hot cathode for thermionic tubes

Info

Publication number
GB806032A
GB806032A GB25744/55A GB2574455A GB806032A GB 806032 A GB806032 A GB 806032A GB 25744/55 A GB25744/55 A GB 25744/55A GB 2574455 A GB2574455 A GB 2574455A GB 806032 A GB806032 A GB 806032A
Authority
GB
United Kingdom
Prior art keywords
cathode
oxide
per cent
point
sept
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
GB25744/55A
Other languages
English (en)
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Publication of GB806032A publication Critical patent/GB806032A/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)
  • Discharge Lamp (AREA)
GB25744/55A 1954-09-08 1955-09-08 A process for the production of a hot cathode for thermionic tubes Expired GB806032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH806032X 1954-09-08

Publications (1)

Publication Number Publication Date
GB806032A true GB806032A (en) 1958-12-17

Family

ID=4538064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25744/55A Expired GB806032A (en) 1954-09-08 1955-09-08 A process for the production of a hot cathode for thermionic tubes

Country Status (4)

Country Link
CH (1) CH323755A (fr)
DE (1) DE1014235B (fr)
FR (1) FR1131224A (fr)
GB (1) GB806032A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082965A2 (fr) * 1981-12-24 1983-07-06 International Standard Electric Corporation Méthode de formation de cathodes thermioniques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE443323C (de) * 1923-01-12 1927-04-26 Philips Nv Verfahren zur Herstellung von Oxydkathoden
US2543439A (en) * 1945-05-02 1951-02-27 Edward A Coomes Method of manufacturing coated elements for electron tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082965A2 (fr) * 1981-12-24 1983-07-06 International Standard Electric Corporation Méthode de formation de cathodes thermioniques
EP0082965A3 (en) * 1981-12-24 1984-09-05 International Standard Electric Corporation Method of forming thermionic cathodes

Also Published As

Publication number Publication date
FR1131224A (fr) 1957-02-19
CH323755A (de) 1957-08-15
DE1014235B (de) 1957-08-22

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