FR2232833A1 - - Google Patents

Info

Publication number
FR2232833A1
FR2232833A1 FR7419481A FR7419481A FR2232833A1 FR 2232833 A1 FR2232833 A1 FR 2232833A1 FR 7419481 A FR7419481 A FR 7419481A FR 7419481 A FR7419481 A FR 7419481A FR 2232833 A1 FR2232833 A1 FR 2232833A1
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.)
Granted
Application number
FR7419481A
Other languages
French (fr)
Other versions
FR2232833B1 (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.)
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
Publication of FR2232833A1 publication Critical patent/FR2232833A1/fr
Application granted granted Critical
Publication of FR2232833B1 publication Critical patent/FR2232833B1/fr
Expired 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material
FR7419481A 1973-06-06 1974-06-06 Expired FR2232833B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7307855.A NL158647B (en) 1973-06-06 1973-06-06 OXYD CATHOD FOR AN ELECTRIC DISCHARGE TUBE.

Publications (2)

Publication Number Publication Date
FR2232833A1 true FR2232833A1 (en) 1975-01-03
FR2232833B1 FR2232833B1 (en) 1978-12-29

Family

ID=19819020

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7419481A Expired FR2232833B1 (en) 1973-06-06 1974-06-06

Country Status (9)

Country Link
US (1) US3911312A (en)
JP (1) JPS5621212B2 (en)
CA (1) CA1008914A (en)
DE (1) DE2425337C3 (en)
ES (1) ES426956A1 (en)
FR (1) FR2232833B1 (en)
GB (1) GB1470318A (en)
IT (1) IT1014280B (en)
NL (1) NL158647B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306521A1 (en) * 1975-04-03 1976-10-29 Sony Corp THERMOIONIC CATHODE OF CATHODIC TUBE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351798U (en) * 1976-10-02 1978-05-02
EP1385190A1 (en) * 2002-07-24 2004-01-28 Thomson Licensing S.A. Oxide cathode for electron gun with a differentially doped metallic substrate
EP1535298B1 (en) * 2002-07-24 2006-06-07 Thomson Licensing Oxide cathode for electron gun with a differentially doped metallic substrate.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076229A (en) * 1963-10-08 1967-07-19 Sylvania Electric Prod Cathodes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179110A (en) * 1938-08-27 1939-11-07 Rca Corp Cathode for electron discharge devices
US2192491A (en) * 1939-02-01 1940-03-05 Rca Corp Cathode for electron discharge devices
FR1107589A (en) * 1954-06-18 1956-01-03 Csf Improvements to oxide cathode supports
FR1152810A (en) * 1955-06-29 1958-02-26 Philips Nv Oxide cathode and process for preparing nickel alloys for their bottom coating
NL101694C (en) * 1959-03-06
US3099577A (en) * 1960-08-24 1963-07-30 Philips Corp Method of manufacturing oxide cathodes and cathodes manufactured by such methods
US3351486A (en) * 1966-11-23 1967-11-07 Sylvania Electric Prod Cathodes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076229A (en) * 1963-10-08 1967-07-19 Sylvania Electric Prod Cathodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306521A1 (en) * 1975-04-03 1976-10-29 Sony Corp THERMOIONIC CATHODE OF CATHODIC TUBE

Also Published As

Publication number Publication date
CA1008914A (en) 1977-04-19
AU6971174A (en) 1975-12-04
US3911312A (en) 1975-10-07
DE2425337A1 (en) 1975-01-02
JPS5023554A (en) 1975-03-13
IT1014280B (en) 1977-04-20
FR2232833B1 (en) 1978-12-29
NL158647B (en) 1978-11-15
DE2425337C3 (en) 1981-06-25
GB1470318A (en) 1977-04-14
DE2425337B2 (en) 1978-04-27
JPS5621212B2 (en) 1981-05-18
NL7307855A (en) 1974-12-10
ES426956A1 (en) 1976-08-01

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Legal Events

Date Code Title Description
ST Notification of lapse