FR1098578A - Cathode surface émettrice en métal poreux - Google Patents

Cathode surface émettrice en métal poreux

Info

Publication number
FR1098578A
FR1098578A FR1098578DA FR1098578A FR 1098578 A FR1098578 A FR 1098578A FR 1098578D A FR1098578D A FR 1098578DA FR 1098578 A FR1098578 A FR 1098578A
Authority
FR
France
Prior art keywords
porous metal
cathode surface
emitting cathode
metal emitting
porous
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
English (en)
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 FR1098578A publication Critical patent/FR1098578A/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
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
FR1098578D 1953-01-19 1954-01-18 Cathode surface émettrice en métal poreux Expired FR1098578A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US331874A US2848644A (en) 1953-01-19 1953-01-19 Thermionic cathode

Publications (1)

Publication Number Publication Date
FR1098578A true FR1098578A (fr) 1955-08-08

Family

ID=23295749

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1098578D Expired FR1098578A (fr) 1953-01-19 1954-01-18 Cathode surface émettrice en métal poreux

Country Status (6)

Country Link
US (1) US2848644A (US06650917-20031118-M00005.png)
BE (1) BE525821A (US06650917-20031118-M00005.png)
CH (1) CH316951A (US06650917-20031118-M00005.png)
DE (1) DE1026000B (US06650917-20031118-M00005.png)
FR (1) FR1098578A (US06650917-20031118-M00005.png)
GB (1) GB739232A (US06650917-20031118-M00005.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965793A (en) * 1959-05-12 1960-12-20 Westinghouse Electric Corp Electron device
US3525135A (en) * 1964-04-16 1970-08-25 Gen Electric Thermionic cathode
US3434812A (en) * 1964-04-16 1969-03-25 Gen Electric Thermionic cathode
DE1234861B (de) * 1965-07-05 1967-02-23 Siemens Ag Vorratskathode fuer elektrische Entladungsgefaesse
US3514661A (en) * 1968-07-05 1970-05-26 Spectra Mat Inc Directly heated dispenser cathode structure and the method of fabricating same
US4273683A (en) * 1977-12-16 1981-06-16 Hitachi, Ltd. Oxide cathode and process for production thereof
JPS5488059A (en) * 1977-12-26 1979-07-12 Hitachi Ltd Thermion emission cathode
JPS5566819A (en) * 1978-11-15 1980-05-20 Hitachi Ltd Oxide cathode for electron tube
US4308178A (en) * 1979-09-17 1981-12-29 North American Philips Consumer Electronics Corp. Thermionic cathode emitter coating

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628460C (de) * 1928-04-29 1936-04-15 Loewe Opta Gmbh Hochemissionskathode
US1922244A (en) * 1930-09-13 1933-08-15 Fansteel Prod Co Inc Electrode and method of making the same
US2175345A (en) * 1935-07-12 1939-10-10 Gen Electric Electric gaseous discharge device
US2147447A (en) * 1936-09-21 1939-02-14 Siemens Ag Glow cathode
US2501089A (en) * 1945-11-29 1950-03-21 Martin A Pomerantz Thermionic electron emitter
GB629126A (en) * 1947-04-14 1949-09-13 British Thomson Houston Co Ltd Improvements in and relating to cathodes for electric discharge devices
BE486002A (US06650917-20031118-M00005.png) * 1947-11-26
US2524001A (en) * 1948-05-19 1950-09-26 Raytheon Mfg Co Compressed cathode support structure
US2624024A (en) * 1949-10-26 1952-12-30 Hartford Nat Bank & Trust Co Cathode for use in electron discharge tubes
US2647216A (en) * 1950-04-01 1953-07-28 Rca Corp Dispenser cathode
NL91132C (US06650917-20031118-M00005.png) * 1951-11-29
NL91131C (US06650917-20031118-M00005.png) * 1951-11-29
FR1093241A (US06650917-20031118-M00005.png) * 1953-02-16 1955-05-02

Also Published As

Publication number Publication date
BE525821A (US06650917-20031118-M00005.png)
US2848644A (en) 1958-08-19
GB739232A (en) 1955-10-26
CH316951A (de) 1956-10-31
DE1026000B (de) 1958-03-13

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