EP0087826A3 - Thermionic cathode and manufacturing method - Google Patents
Thermionic cathode and manufacturing method Download PDFInfo
- Publication number
- EP0087826A3 EP0087826A3 EP83200139A EP83200139A EP0087826A3 EP 0087826 A3 EP0087826 A3 EP 0087826A3 EP 83200139 A EP83200139 A EP 83200139A EP 83200139 A EP83200139 A EP 83200139A EP 0087826 A3 EP0087826 A3 EP 0087826A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacturing
- thermionic cathode
- thermionic
- cathode
- Prior art date
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title 1
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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Vapour Deposition (AREA)
- Solid Thermionic Cathode (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823205746 DE3205746A1 (en) | 1982-02-18 | 1982-02-18 | THERMIONIC CATHODE AND METHOD FOR THE PRODUCTION THEREOF |
DE3205746 | 1982-02-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0087826A2 EP0087826A2 (en) | 1983-09-07 |
EP0087826A3 true EP0087826A3 (en) | 1984-06-13 |
EP0087826B1 EP0087826B1 (en) | 1986-09-03 |
Family
ID=6156031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83200139A Expired EP0087826B1 (en) | 1982-02-18 | 1983-01-27 | Thermionic cathode and manufacturing method |
Country Status (6)
Country | Link |
---|---|
US (1) | US4524297A (en) |
EP (1) | EP0087826B1 (en) |
JP (1) | JPS58155619A (en) |
CA (1) | CA1194089A (en) |
DE (2) | DE3205746A1 (en) |
ES (2) | ES8401674A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3446334A1 (en) * | 1984-12-19 | 1986-06-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | METHOD FOR PRODUCING <111> PREFERENTIAL TUNGSTEN |
JPH0760641B2 (en) * | 1985-02-06 | 1995-06-28 | 新日本無線株式会社 | Magnetron cathode |
CA1272504A (en) * | 1986-11-18 | 1990-08-07 | Franz Prein | Surface for electric discharge |
DE3723271A1 (en) * | 1987-07-14 | 1989-01-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | CATHODE FOR A HIGH PRESSURE DISCHARGE LAMP |
DE69432174T2 (en) * | 1993-11-24 | 2003-12-11 | Tdk Corp., Tokio/Tokyo | COLD CATHODE ELECTRODE SOURCE ELEMENT AND METHOD FOR PRODUCING THE SAME |
RU2194328C2 (en) * | 1998-05-19 | 2002-12-10 | ООО "Высокие технологии" | Cold-emission film cathode and its production process |
US6815876B1 (en) * | 1999-06-23 | 2004-11-09 | Agere Systems Inc. | Cathode with improved work function and method for making the same |
TW498382B (en) * | 2000-05-11 | 2002-08-11 | Matsushita Electric Ind Co Ltd | Electron releasing membrane, plasma display panel using the electron releasing membrane, and production method thereof |
KR100442300B1 (en) * | 2002-01-04 | 2004-07-30 | 엘지.필립스디스플레이(주) | Cathode for Cathode Ray Tube |
CN101297452A (en) * | 2005-09-14 | 2008-10-29 | 力特保险丝有限公司 | Gas-filled surge arrester, activating compound, ignition stripes and method therefore |
JP5341890B2 (en) * | 2007-07-24 | 2013-11-13 | コーニンクレッカ フィリップス エヌ ヴェ | Thermionic electron emitter, method of making a thermionic electron emitter, and x-ray source including a thermionic electron emitter |
DE102015211235B4 (en) * | 2015-06-18 | 2023-03-23 | Siemens Healthcare Gmbh | emitter |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2339392A (en) * | 1942-10-06 | 1944-01-18 | Rca Corp | Cathode |
DE1439890A1 (en) * | 1963-06-03 | 1969-04-17 | Varian Associates | Thermionic emitter and process for its manufacture |
FR2301914A1 (en) * | 1975-02-21 | 1976-09-17 | Philips Nv | CATHODE A RESERVE |
US4019081A (en) * | 1974-10-25 | 1977-04-19 | Bbc Brown Boveri & Company Limited | Reaction cathode |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1150153A (en) * | 1953-08-01 | 1958-01-08 | France Etat | Thermoemissive cathodes for rhenium-supported electron tubes |
US2878409A (en) * | 1957-04-29 | 1959-03-17 | Philips Corp | Dispenser-type cathode and method of making |
GB1137124A (en) * | 1964-12-23 | 1968-12-18 | Nat Res Dev | Thermionic electron emitter |
SU439028A1 (en) * | 1972-08-08 | 1974-08-05 | Е. И. Давыдова, А. Д. Карпенко , В. А. Шишкин | Method of making autoelectronic cathodes |
SU510760A1 (en) * | 1974-09-09 | 1976-04-15 | Организация П/Я Х-5263 | Cathode |
CH579824A5 (en) * | 1974-10-25 | 1976-09-15 | Bbc Brown Boveri & Cie |
-
1982
- 1982-02-18 DE DE19823205746 patent/DE3205746A1/en not_active Withdrawn
- 1982-09-13 US US06/416,840 patent/US4524297A/en not_active Expired - Fee Related
-
1983
- 1983-01-27 DE DE8383200139T patent/DE3365755D1/en not_active Expired
- 1983-01-27 EP EP83200139A patent/EP0087826B1/en not_active Expired
- 1983-02-16 ES ES519829A patent/ES8401674A1/en not_active Expired
- 1983-02-17 CA CA000421800A patent/CA1194089A/en not_active Expired
- 1983-02-18 JP JP58026115A patent/JPS58155619A/en active Granted
- 1983-05-16 ES ES522416A patent/ES522416A0/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2339392A (en) * | 1942-10-06 | 1944-01-18 | Rca Corp | Cathode |
DE1439890A1 (en) * | 1963-06-03 | 1969-04-17 | Varian Associates | Thermionic emitter and process for its manufacture |
US4019081A (en) * | 1974-10-25 | 1977-04-19 | Bbc Brown Boveri & Company Limited | Reaction cathode |
FR2301914A1 (en) * | 1975-02-21 | 1976-09-17 | Philips Nv | CATHODE A RESERVE |
Also Published As
Publication number | Publication date |
---|---|
EP0087826B1 (en) | 1986-09-03 |
DE3365755D1 (en) | 1986-10-09 |
ES8403243A1 (en) | 1984-03-01 |
ES519829A0 (en) | 1983-12-01 |
DE3205746A1 (en) | 1983-08-25 |
JPH0447936B2 (en) | 1992-08-05 |
EP0087826A2 (en) | 1983-09-07 |
CA1194089A (en) | 1985-09-24 |
JPS58155619A (en) | 1983-09-16 |
ES8401674A1 (en) | 1983-12-01 |
US4524297A (en) | 1985-06-18 |
ES522416A0 (en) | 1984-03-01 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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PUAL | Search report despatched |
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17P | Request for examination filed |
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ITF | It: translation for a ep patent filed | ||
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
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STAA | Information on the status of an ep patent application or granted ep patent |
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26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
ITPR | It: changes in ownership of a european patent |
Owner name: CAMBIO RAGIONE SOCIALE;PHILIPS ELECTRONICS N.V. |
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