FR1029729A - Electron emitting material - Google Patents

Electron emitting material

Info

Publication number: FR1029729A
Authority: FR; France
Prior art keywords: emitting material; electron emitting; electron; emitting
Prior art date: 1950-01-26
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

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.)

RCA Corp

Original Assignee

RCA Corp

Radio Corporation of America

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.)

1950-01-26

Filing date

1950-12-15

Publication date

1953-06-05

1950-12-15 Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp

1953-06-05 Application granted granted Critical

1953-06-05 Publication of FR1029729A publication Critical patent/FR1029729A/en

Status Expired legal-status Critical Current

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
- H01J1/142—Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material

FR1029729D 1950-01-26 1950-12-15 Electron emitting material Expired FR1029729A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US684059XA	1950-01-26	1950-01-26

Publications (1)

Publication Number	Publication Date
FR1029729A true FR1029729A (en)	1953-06-05

Family

ID=22082368

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1029729D Expired FR1029729A (en)	1950-01-26	1950-12-15	Electron emitting material

Country Status (2)

Country	Link
FR (1)	FR1029729A (en)
GB (1)	GB684059A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2830027A (en) *	1954-11-22	1958-04-08	Csf	Oxide-coated cathodes for thermionic tubes
EP0764963A1 (en) *	1995-09-21	1997-03-26	Matsushita Electronics Corporation	Emitter material for cathode ray tube and a method for manufacturing the same
US5925976A (en) *	1996-11-12	1999-07-20	Matsushita Electronics Corporation	Cathode for electron tube having specific emissive material

1950
- 1950-12-15 FR FR1029729D patent/FR1029729A/en not_active Expired
1951
- 1951-01-19 GB GB1497/51A patent/GB684059A/en not_active Expired

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2830027A (en) *	1954-11-22	1958-04-08	Csf	Oxide-coated cathodes for thermionic tubes
EP0764963A1 (en) *	1995-09-21	1997-03-26	Matsushita Electronics Corporation	Emitter material for cathode ray tube and a method for manufacturing the same
US6033280A (en) *	1995-09-21	2000-03-07	Matsushita Electronics Corporation	Method for manufacturing emitter for cathode ray tube
US6222308B1 (en)	1995-09-21	2001-04-24	Matsushita Electronics Corporation	Emitter material for cathode ray tube having at least one alkaline earth metal carbonate dispersed or concentrated in a mixed crystal or solid solution
US5925976A (en) *	1996-11-12	1999-07-20	Matsushita Electronics Corporation	Cathode for electron tube having specific emissive material

Also Published As

Publication number	Publication date
GB684059A (en)	1952-12-10

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