FR2339950B1 - - Google Patents

Info

Publication number
FR2339950B1
FR2339950B1 FR7624329A FR7624329A FR2339950B1 FR 2339950 B1 FR2339950 B1 FR 2339950B1 FR 7624329 A FR7624329 A FR 7624329A FR 7624329 A FR7624329 A FR 7624329A FR 2339950 B1 FR2339950 B1 FR 2339950B1
Authority
FR
France
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
FR7624329A
Other languages
French (fr)
Other versions
FR2339950A1 (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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 claimed from JP749676A external-priority patent/JPS5291641A/ja
Priority claimed from JP749176A external-priority patent/JPS5291356A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2339950A1 publication Critical patent/FR2339950A1/fr
Application granted granted Critical
Publication of FR2339950B1 publication Critical patent/FR2339950B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
FR7624329A 1976-01-28 1976-08-09 Cathode a oxydes a chauffage direct Granted FR2339950A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP749676A JPS5291641A (en) 1976-01-28 1976-01-28 Direct-heated cathode structure
JP749176A JPS5291356A (en) 1976-01-28 1976-01-28 Direct heating cathode structure

Publications (2)

Publication Number Publication Date
FR2339950A1 FR2339950A1 (fr) 1977-08-26
FR2339950B1 true FR2339950B1 (OSRAM) 1979-06-01

Family

ID=26341790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624329A Granted FR2339950A1 (fr) 1976-01-28 1976-08-09 Cathode a oxydes a chauffage direct

Country Status (4)

Country Link
US (1) US4081713A (OSRAM)
DE (1) DE2635772C3 (OSRAM)
FR (1) FR2339950A1 (OSRAM)
GB (1) GB1559875A (OSRAM)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58813B2 (ja) * 1977-09-30 1983-01-08 株式会社日立製作所 電子管陰極及びその製造方法
JPS5471550A (en) * 1977-11-18 1979-06-08 Hitachi Ltd Base metal material for direct heating oxide cathode
CA1139827A (en) * 1977-12-06 1983-01-18 George L. Davis Oxide cathode and method of manufacturing powder metallurgical nickel for such a cathode
GB2010911B (en) * 1977-12-06 1982-03-31 Philips Nv Method of making cathode support nickle strip
JPS5814016B2 (ja) * 1978-03-31 1983-03-17 株式会社日立製作所 直熱形酸化物陰極用基体金属板材
JPS5814017B2 (ja) * 1978-04-05 1983-03-17 株式会社日立製作所 電子管用直熱型陰極
JPS5816737B2 (ja) * 1978-04-24 1983-04-01 株式会社日立製作所 電子管用酸化物陰極
US4636681A (en) * 1978-07-27 1987-01-13 Hitachi, Ltd. Directly heated cathode
JPS5566819A (en) * 1978-11-15 1980-05-20 Hitachi Ltd Oxide cathode for electron tube
JPS5641636A (en) * 1979-09-12 1981-04-18 Hitachi Ltd Directly heated type oxide cathode
GB2059676B (en) * 1979-09-12 1983-07-20 Hitachi Ltd Oxide-coated cathodes
US4308178A (en) * 1979-09-17 1981-12-29 North American Philips Consumer Electronics Corp. Thermionic cathode emitter coating
CA1270890A (en) * 1985-07-19 1990-06-26 Keiji Watanabe Cathode for electron tube
DE19616408A1 (de) * 1996-04-24 1997-10-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrode für Entladungslampen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE632570A (OSRAM) * 1962-05-21
US3286119A (en) * 1963-05-08 1966-11-15 Hitachi Ltd Hollow cathode discharge tubes
US3374385A (en) * 1963-07-10 1968-03-19 Rca Corp Electron tube cathode with nickel-tungsten alloy base and thin nickel coating
US3240569A (en) * 1964-08-21 1966-03-15 Sylvania Electric Prod Cathode base structure
US3351486A (en) * 1966-11-23 1967-11-07 Sylvania Electric Prod Cathodes
US3558966A (en) * 1967-03-01 1971-01-26 Semicon Associates Inc Directly heated dispenser cathode
US3745403A (en) * 1971-11-30 1973-07-10 Hitachi Ltd Direct heating cathode structure for electron tubes

Also Published As

Publication number Publication date
DE2635772A1 (de) 1977-08-11
FR2339950A1 (fr) 1977-08-26
US4081713A (en) 1978-03-28
DE2635772C3 (de) 1978-10-26
DE2635772B2 (de) 1978-03-02
GB1559875A (en) 1980-01-30

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Legal Events

Date Code Title Description
ST Notification of lapse