NL94233C - - Google Patents

Info

Publication number
NL94233C
NL94233C NL94233DA NL94233C NL 94233 C NL94233 C NL 94233C NL 94233D A NL94233D A NL 94233DA NL 94233 C NL94233 C NL 94233C
Authority
NL
Netherlands
Application number
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.)
Publication of NL94233C publication Critical patent/NL94233C/xx

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
NL94233D 1954-12-06 NL94233C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US473386A US2813220A (en) 1954-12-06 1954-12-06 Indirectly heated cathode

Publications (1)

Publication Number Publication Date
NL94233C true NL94233C (en)

Family

ID=23879314

Family Applications (1)

Application Number Title Priority Date Filing Date
NL94233D NL94233C (en) 1954-12-06

Country Status (8)

Country Link
US (1) US2813220A (en)
BE (1) BE543391A (en)
CH (1) CH336905A (en)
DE (1) DE1039141B (en)
ES (1) ES225387A1 (en)
FR (1) FR1143215A (en)
GB (1) GB793726A (en)
NL (1) NL94233C (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544065A (en) * 1953-08-14
US3201639A (en) * 1955-02-09 1965-08-17 Philips Corp Thermionic dispenser cathode
US2945295A (en) * 1957-12-20 1960-07-19 Westinghouse Electric Corp High temperature metallic joint
US3018404A (en) * 1958-03-27 1962-01-23 Raytheon Co Electron tube cathodes
US2975320A (en) * 1958-12-03 1961-03-14 Rca Corp Low-temperature plasma source
US2945150A (en) * 1958-12-11 1960-07-12 Gen Electric Thermionic cathodes and methods of making
US2975322A (en) * 1958-12-29 1961-03-14 Raytheon Co Indirectly heated cathodes
US3117249A (en) * 1960-02-16 1964-01-07 Sperry Rand Corp Embedded heater cathode
US3134924A (en) * 1960-07-05 1964-05-26 Monsanto Co Emissive materials of a metal matrix with molecularly dispersed additives
US3258636A (en) * 1961-09-01 1966-06-28 Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal
US3373307A (en) * 1963-11-21 1968-03-12 Philips Corp Dispenser cathode
DE2842079A1 (en) * 1978-09-27 1980-04-03 Siemens Ag SUPPLY CATHODE, ESPECIALLY METAL CAPILLARY CATHODE
JPS5652835A (en) * 1979-10-01 1981-05-12 Hitachi Ltd Impregnated cathode
FR2494035A1 (en) * 1980-11-07 1982-05-14 Thomson Csf THERMO-ELECTRONIC CATHODE FOR MICROFREQUENCY TUBE AND TUBE INCORPORATING SUCH A CATHODE
KR930007461B1 (en) * 1991-04-23 1993-08-11 주식회사 금성사 Method of making a dispenser type cathode
FR2683090A1 (en) * 1991-10-25 1993-04-30 Europ Composants Electron Dispenser cathode and method of manufacture of such a cathode
KR930014673A (en) * 1991-12-20 1993-07-23 김정배 Impregnated Cathode Structure and Manufacturing Method Thereof
DE10254697A1 (en) * 2002-11-23 2004-06-03 Philips Intellectual Property & Standards Gmbh Vacuum electron tube with oxide cathode
CN114340124B (en) * 2021-12-30 2024-02-27 中国科学院合肥物质科学研究院 Sodium ion emitter and preparation method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT174993B (en) * 1951-02-08 1953-05-26 Philips Nv An electric discharge tube having a cathode consisting of a porous body of refractory metal and a method for producing such a cathode
AT176924B (en) * 1951-03-22 1953-12-10 Philips Nv A method for producing a cathode for an electrical discharge tube which contains a supply of alkaline earth metal compounds inside and the wall of which consists at least partially of a porous body produced by pressing and sintering, and a cathode produced by this method
DE890390C (en) * 1951-07-12 1953-09-17 Siemens Ag Cathode for electrical discharge vessels
BE515835A (en) * 1951-11-29
BE515834A (en) * 1951-11-29
BE515833A (en) * 1951-11-29
AT180338B (en) * 1952-02-27 1954-11-25 Philips Nv Cathode for an electric discharge tube and method for producing this cathode
AT183488B (en) * 1953-06-11 1955-10-10 Philips Nv Method of manufacturing a cathode body for an electric discharge tube

Also Published As

Publication number Publication date
US2813220A (en) 1957-11-12
GB793726A (en) 1958-04-23
BE543391A (en)
DE1039141B (en) 1958-09-18
FR1143215A (en) 1957-09-27
CH336905A (en) 1959-03-15
ES225387A1 (en) 1956-02-01

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