BE502232A - - Google Patents
Info
- Publication number
- BE502232A BE502232A BE502232DA BE502232A BE 502232 A BE502232 A BE 502232A BE 502232D A BE502232D A BE 502232DA BE 502232 A BE502232 A BE 502232A
- Authority
- BE
- Belgium
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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US153212A US2639399A (en) | 1950-03-31 | 1950-03-31 | Electron emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE502232A true BE502232A (en:Method) |
Family
ID=22546234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE502232D BE502232A (en:Method) | 1950-03-31 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2639399A (en:Method) |
| BE (1) | BE502232A (en:Method) |
| CH (1) | CH301197A (en:Method) |
| DE (1) | DE856666C (en:Method) |
| GB (2) | GB678258A (en:Method) |
| NL (1) | NL80503C (en:Method) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744073A (en) * | 1952-11-22 | 1956-05-01 | Battelle Development Corp | Thermionic emitter materials |
| DE971413C (de) * | 1953-10-02 | 1959-01-22 | Siemens Ag | Vorrichtung zum tiegellosen Zonenschmelzen |
| US3312856A (en) * | 1963-03-26 | 1967-04-04 | Gen Electric | Rhenium supported metallic boride cathode emitters |
| US3505553A (en) * | 1966-05-12 | 1970-04-07 | Philips Corp | Radio-interference-free low-pressure mercury-vapor lamp |
| US3440475A (en) * | 1967-04-11 | 1969-04-22 | Lokomotivbau Elektrotech | Lanthanum hexaboride cathode system for an electron beam generator |
| US3944866A (en) * | 1974-04-08 | 1976-03-16 | Canadian Patents & Development Ltd. | Thermionic emitter of lanthanum strontium vanadates |
| JPS5451776A (en) * | 1977-10-03 | 1979-04-23 | Nippon Hoso Kyokai <Nhk> | Gas discharge display panel |
| US4260525A (en) * | 1978-11-27 | 1981-04-07 | Rca Corporation | Single-crystal hexaborides and method of preparation |
| FR2445605A1 (fr) * | 1978-12-27 | 1980-07-25 | Thomson Csf | Cathode a chauffage direct et tube electronique haute frequence comportant une telle cathode |
| DE4305558A1 (de) * | 1993-02-24 | 1994-08-25 | Asea Brown Boveri | Verfahren zur Herstellung von Drähten, welche insbesondere für Kathoden von Elektronenröhren geeignet sind |
| US6025038A (en) * | 1998-08-26 | 2000-02-15 | Board Of Regents Of The University Of Nebraska | Method for depositing rare-earth boride onto a substrate |
| US6077617A (en) * | 1998-08-26 | 2000-06-20 | Board Of Regents Of The University Of Nebraska | Rare-earth boride thin film system |
| WO2008054451A2 (en) * | 2006-02-06 | 2008-05-08 | The University Of North Carolina At Chapel Hill | Synthesis and processing of rare-earth boride nanowires as electron emitters |
| DE102011013262A1 (de) | 2011-03-07 | 2012-09-13 | Adlantis Dortmund Gmbh | Ionisationsquelle und Nachweisgerät für Spurengase |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1023485A (en) * | 1908-11-20 | 1912-04-16 | Orlando M Thowless | Illuminant for electrical incandescent lamps. |
| US2117636A (en) * | 1934-03-24 | 1938-05-17 | Gerald B Tjoflat | Thermionic electrode |
| US2501089A (en) * | 1945-11-29 | 1950-03-21 | Martin A Pomerantz | Thermionic electron emitter |
| US2502331A (en) * | 1948-12-21 | 1950-03-28 | Rca Corp | Geiger-muller counter for radioactive emission |
-
0
- NL NL80503D patent/NL80503C/xx active
- BE BE502232D patent/BE502232A/xx unknown
-
1950
- 1950-03-31 US US153212A patent/US2639399A/en not_active Expired - Lifetime
-
1951
- 1951-03-12 GB GB5910/51A patent/GB678258A/en not_active Expired
- 1951-03-30 DE DEI3955A patent/DE856666C/de not_active Expired
- 1951-03-31 CH CH301197D patent/CH301197A/de unknown
- 1951-07-18 GB GB17063/51A patent/GB683940A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL80503C (en:Method) | |
| GB683940A (en) | 1952-12-10 |
| GB678258A (en) | 1952-08-27 |
| CH301197A (de) | 1954-08-31 |
| US2639399A (en) | 1953-05-19 |
| DE856666C (de) | 1952-11-24 |