BE548876A - - Google Patents

Info

Publication number: BE548876A
Authority: BE; Belgium

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.)

1953-08-14

Publication of BE548876A publication Critical patent/BE548876A/xx

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
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/027—Construction of the gun or parts thereof
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Solid Thermionic Cathode (AREA)
Microwave Tubes (AREA)
Powder Metallurgy (AREA)

BE548876D 1953-08-14 BE548876A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB328590X		1953-08-14
GB3013171X		1955-06-23

Publications (1)

Publication Number	Publication Date
BE548876A true BE548876A (en)

Family

ID=32396015

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
BE544065D BE544065A (en)	1953-08-14
BE531122D BE531122A (en)	1953-08-14
BE548876D BE548876A (en)	1953-08-14

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
BE544065D BE544065A (en)	1953-08-14
BE531122D BE531122A (en)	1953-08-14

Country Status (7)

Country	Link
US (2)	US2912611A (en)
BE (3)	BE548876A (en)
CH (3)	CH328590A (en)
DE (1)	DE1015941B (en)
FR (3)	FR1113771A (en)
GB (1)	GB750339A (en)
NL (1)	NL97850C (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3076915A (en) *	1954-12-24	1963-02-05	Egyesuelt Izzolampa	Cathode assembly and method of making same
US3159461A (en) *	1958-10-20	1964-12-01	Bell Telephone Labor Inc	Thermionic cathode
GB904505A (en) *	1958-11-25	1962-08-29	Harries Electronics Corp Ltd	Improvements in or relating to electron discharge tubes for television, radar and the like
NL101694C (en) *	1959-03-06
US3113236A (en) *	1959-06-23	1963-12-03	Philips Corp	Oxide dispenser type cathode
US3170772A (en) *	1961-01-05	1965-02-23	Tokyo Shibaura Electric Co	Oxide coated cathodes for electron tubes
US3160780A (en) *	1961-01-17	1964-12-08	Philips Corp	Indirectly heated cathode
NL278653A (en) *	1961-06-01
US3263115A (en) *	1962-05-23	1966-07-26	Gen Electric	Dispenser cathode and method of manufacture
US3374385A (en) *	1963-07-10	1968-03-19	Rca Corp	Electron tube cathode with nickel-tungsten alloy base and thin nickel coating
DE1255207B (en) *	1963-09-19	1967-11-30	Western Electric Co	Matrix or layer cathode for glow cathode tubes
US3307241A (en) *	1963-10-14	1967-03-07	Litton Prec Products Inc	Process for making cathodes
US3303378A (en) *	1964-06-17	1967-02-07	Chorney Paul	Monolithic cathode structure
US3436584A (en) *	1966-03-15	1969-04-01	Gen Electric	Electron emission source with sharply defined emitting area
US3436583A (en) *	1966-03-15	1969-04-01	Gen Electric	Electron gun
NL6608782A (en) *	1966-06-24	1967-12-27
US3465400A (en) *	1967-02-01	1969-09-09	Varian Associates	Method of making cylindrical mesh electrode for electron tubes
BE759247A (en) *	1969-11-22	1971-05-21	Philips Nv	DEVICE EQUIPPED WITH AN ELECTRONIC TUBE, AND ELECTRONIC TUBE INTENDED FOR SUCH A DEVICE
US3803677A (en) *	1972-04-28	1974-04-16	Air Liquide	Method for making cathodes for electron guns
US3835327A (en) *	1972-05-08	1974-09-10	United Aircraft Corp	Triode electron gun for electron beam machines
US3974414A (en) *	1975-07-09	1976-08-10	Gte Sylvania Incorporated	Cathode ray tube cathode
DE2808134A1 (en) *	1978-02-25	1979-08-30	Licentia Gmbh	Long-life cathode with porous two layer emitter - has emitting layer thinner and of lower porosity than supporting layer
FR2525808A1 (en) *	1982-04-23	1983-10-28	Thomson Csf	Thermo-electronic cathode with impregnated porous matrix - brazed to support via interposed compact layer
EP0146383B1 (en) *	1983-12-20	1992-08-26	Eev Limited	Apparatus for forming electron beams
JPS63224127A (en) *	1987-03-11	1988-09-19	Hitachi Ltd	Impregnated cathode
JPH0298921A (en) *	1988-10-05	1990-04-11	Fujitsu Ltd	Electron gun and manufacture thereof aligner equipped with same electron gun and manufacture of semiconductor device using same aligner
FR2647257B1 (en) *	1989-05-19	1991-07-05	Thomson Tubes Electroniques	IMPREGNATED CATHODE WITH REDUCED CAPACITY WITH APPLICATION TO BEAM INDEXING VISUALIZATION TUBES, AND ELECTRONIC TUBES COMPRISING SUCH A DEVICE
KR920008300B1 (en) *	1990-09-22	1992-09-26	삼성전관 주식회사	The method of manufacturing dispenser-type cathode
KR930007461B1 (en) *	1991-04-23	1993-08-11	주식회사 금성사	Method of making a dispenser type cathode
JPH0850849A (en) *	1994-05-31	1996-02-20	Nec Kansai Ltd	Cathode member and electronic tube using it
JPH09147735A (en) *	1995-09-21	1997-06-06	Matsushita Electron Corp	Cathode-ray tube emitter material and manufacture thereof
JPH11339633A (en) *	1997-11-04	1999-12-10	Sony Corp	Impregnated cathode and manufacture therefor and electron gun and electronic tube

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2733378A (en) *		1956-01-31		Thermionic cathodes for electronic discharge devices
US1552310A (en) *	1923-07-24	1925-09-01	Gen Electric	Electrode for discharge tubes
US1931254A (en) *	1928-02-28	1933-10-17	Electrons Inc	Electronic tube
US2147447A (en) *	1936-09-21	1939-02-14	Siemens Ag	Glow cathode
US2275886A (en) *	1941-04-30	1942-03-10	Gen Electric	Process of activating cathodes
US2543439A (en) *	1945-05-02	1951-02-27	Edward A Coomes	Method of manufacturing coated elements for electron tubes
US2492142A (en) *	1945-10-17	1949-12-27	Kenneth J Germeshausen	Electric system embodying coldcathode gaseous discharge device
GB629126A (en) *	1947-04-14	1949-09-13	British Thomson Houston Co Ltd	Improvements in and relating to cathodes for electric discharge devices
BE498869A (en) *	1949-10-25
US2640949A (en) *	1951-02-07	1953-06-02	Atomic Energy Commission	Electron source
US2640950A (en) *	1951-06-06	1953-06-02	Atomic Energy Commission	Point electron source
US2741717A (en) *	1951-06-14	1956-04-10	Siemens Ag	Dispenser type cathode having gettercoated parts
NL91132C (en) *	1951-11-29
IT500079A (en) *	1952-02-27
BE526506A (en) *	1953-02-16
NL94233C (en) *	1954-12-06

0
- BE BE544065D patent/BE544065A/xx unknown
- BE BE531122D patent/BE531122A/xx unknown
- BE BE548876D patent/BE548876A/xx unknown
- NL NL97850D patent/NL97850C/xx active
1953
- 1953-08-14 GB GB22495/53A patent/GB750339A/en not_active Expired
1954
- 1954-07-28 US US446206A patent/US2912611A/en not_active Expired - Lifetime
- 1954-08-03 FR FR1113771D patent/FR1113771A/en not_active Expired
- 1954-08-11 CH CH328590D patent/CH328590A/en unknown
- 1954-08-14 DE DEI9023A patent/DE1015941B/en active Pending
1955
- 1955-11-16 FR FR68247D patent/FR68247E/en not_active Expired
- 1955-11-17 CH CH337954D patent/CH337954A/en unknown
1956
- 1956-05-03 US US582595A patent/US3013171A/en not_active Expired - Lifetime
- 1956-06-20 FR FR71337D patent/FR71337E/en not_active Expired
- 1956-06-23 CH CH338908D patent/CH338908A/en unknown

Also Published As

Publication number	Publication date
BE531122A (en)
CH337954A (en)	1959-04-30
CH338908A (en)	1959-06-15
NL97850C (en)
BE544065A (en)
FR68247E (en)	1958-04-09
FR71337E (en)	1959-12-22
CH328590A (en)	1958-03-15
US2912611A (en)	1959-11-10
DE1015941B (en)	1957-09-19
GB750339A (en)	1956-06-13
FR1113771A (en)	1956-04-04
US3013171A (en)	1961-12-12

Publication	Publication Date	Title
AT193854B (en)	1957-12-10
JPS301511B1 (en)	1955-03-08
AT191364A (en)	1957-08-26
AT190646B (en)	1957-07-10
AT193331B (en)	1957-11-25
AT192380B (en)	1957-10-10
AT189958B (en)	1957-05-25
AT191140B (en)	1957-08-10
AT191026B (en)	1957-07-25
AT191238B (en)	1957-08-10
AT199365B (en)	1958-08-25
FR58032E (en)	1953-09-21
AT194824B (en)	1958-01-25
AT194372B (en)	1958-01-10
AT197771B (en)	1958-05-27
AT195162B (en)	1958-01-25
AT195400B (en)	1958-01-25
AT196785B (en)	1958-03-25
AT194074B (en)	1957-12-27
AT205166B (en)	1959-09-10
AT213751B (en)	1961-02-27
AT199317B (en)	1958-08-25
BE532937A (en)
BE532486A (en)
BE476906A (en)