FR2033868A5 - - Google Patents

Info

Publication number
FR2033868A5
FR2033868A5 FR7003623A FR7003623A FR2033868A5 FR 2033868 A5 FR2033868 A5 FR 2033868A5 FR 7003623 A FR7003623 A FR 7003623A FR 7003623 A FR7003623 A FR 7003623A FR 2033868 A5 FR2033868 A5 FR 2033868A5
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
FR7003623A
Other languages
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR2033868A5 publication Critical patent/FR2033868A5/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/148—Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
    • 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
    • H01J1/15—Cathodes heated directly by an electric current
FR7003623A 1969-03-17 1970-02-03 Expired FR2033868A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80769569A 1969-03-17 1969-03-17

Publications (1)

Publication Number Publication Date
FR2033868A5 true FR2033868A5 (en) 1970-12-04

Family

ID=25196972

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7003623A Expired FR2033868A5 (en) 1969-03-17 1970-02-03

Country Status (4)

Country Link
US (1) US3532923A (en)
DE (1) DE2011615C3 (en)
FR (1) FR2033868A5 (en)
GB (1) GB1284034A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010128A1 (en) * 1978-08-31 1980-04-30 Siemens Aktiengesellschaft Directly heated cathode for an electron tube with coaxial electrode structure and method of making such a cathode
EP0013201A1 (en) * 1978-12-27 1980-07-09 Thomson-Csf Directly heated cathode and high frequency electron tube comprising such a cathode
FR2447603A1 (en) * 1979-01-23 1980-08-22 Denki Kagaku Kogyo Kk SUPPORT DEVICE FOR THERMOIONIC CATHODE

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1291221A (en) * 1968-07-07 1972-10-04 Smith Kenneth C A Electron probe forming system
US3711908A (en) * 1970-08-27 1973-01-23 Ibm Method for forming small diameter tips on sintered material cathodes
GB1394055A (en) * 1971-07-09 1975-05-14 Nat Res Dev Electron emitters
JPS5277661A (en) * 1975-12-24 1977-06-30 Jeol Ltd Electron gun
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode
DE2732960C2 (en) * 1977-07-21 1982-04-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Hot cathode and process for its manufacture
CH617793A5 (en) * 1977-09-02 1980-06-13 Balzers Hochvakuum
FR2418964A1 (en) * 1978-03-01 1979-09-28 Commissariat Energie Atomique CATHODE FOR ELECTRONIC CANNON
US4258283A (en) * 1978-08-31 1981-03-24 Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten Cathode for electron emission
JPS6023456B2 (en) * 1978-11-01 1985-06-07 電気化学工業株式会社 Thermionic cathode device
US4288717A (en) * 1979-11-06 1981-09-08 Denki Kagaku Kogyo Kabushiki Kaisha Thermionic cathode apparatus
US4760306A (en) * 1983-06-10 1988-07-26 The United States Of America As Represented By The United States Department Of Energy Electron emitting filaments for electron discharge devices
NL8800539A (en) * 1988-03-03 1989-10-02 Philips Nv ELECTRON BUNDLE DEVICE.
US5444327A (en) * 1993-06-30 1995-08-22 Varian Associates, Inc. Anisotropic pyrolytic graphite heater
FR2726121B1 (en) * 1994-10-21 1996-11-15 Thomson Tubes Electroniques RADIATION HEATING DEVICE FOR INDIRECT HEATING CATHODE
JP4951477B2 (en) * 2006-12-04 2012-06-13 電気化学工業株式会社 Electron emission source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US323983A (en) * 1885-08-11 Incandescent lamp
US978094A (en) * 1909-09-13 1910-12-06 Frederick R Campbell Incandescent electric lamp.
US2813991A (en) * 1952-11-05 1957-11-19 Gen Electric Electron emitting electrode
US3069584A (en) * 1959-07-29 1962-12-18 Jack W Frazer Method of making tungsten filaments
US3374386A (en) * 1964-11-02 1968-03-19 Field Emission Corp Field emission cathode having tungsten miller indices 100 plane coated with zirconium, hafnium or magnesium on oxygen binder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010128A1 (en) * 1978-08-31 1980-04-30 Siemens Aktiengesellschaft Directly heated cathode for an electron tube with coaxial electrode structure and method of making such a cathode
EP0013201A1 (en) * 1978-12-27 1980-07-09 Thomson-Csf Directly heated cathode and high frequency electron tube comprising such a cathode
FR2445605A1 (en) * 1978-12-27 1980-07-25 Thomson Csf DIRECT HEATING CATHODE AND HIGH FREQUENCY ELECTRONIC TUBE COMPRISING SUCH A CATHODE
FR2447603A1 (en) * 1979-01-23 1980-08-22 Denki Kagaku Kogyo Kk SUPPORT DEVICE FOR THERMOIONIC CATHODE

Also Published As

Publication number Publication date
DE2011615A1 (en) 1970-09-24
US3532923A (en) 1970-10-06
DE2011615B2 (en) 1973-05-10
DE2011615C3 (en) 1973-12-06
GB1284034A (en) 1972-08-02

Similar Documents

Publication Publication Date Title
FR2033868A5 (en)
AU465452B2 (en)
AU429630B2 (en)
AU450150B2 (en)
AU442375B2 (en)
AU470301B1 (en)
CS148795B1 (en)
AU5113869A (en)
AU442463B2 (en)
AU442380B2 (en)
AT308690B (en)
AU442535B2 (en)
AU425297B2 (en)
AU442554B2 (en)
AU470661B1 (en)
AU442357B2 (en)
AU438128B2 (en)
AU442322B2 (en)
AU442285B2 (en)
AU5077469A (en)
AR203167Q (en)
CS150370B1 (en)
AU4540468A (en)
AU5109569A (en)
BE727097A (en)

Legal Events

Date Code Title Description
ST Notification of lapse