FR2402297B1 - - Google Patents
Info
- Publication number
- FR2402297B1 FR2402297B1 FR7825256A FR7825256A FR2402297B1 FR 2402297 B1 FR2402297 B1 FR 2402297B1 FR 7825256 A FR7825256 A FR 7825256A FR 7825256 A FR7825256 A FR 7825256A FR 2402297 B1 FR2402297 B1 FR 2402297B1
- 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
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1066577A CH617793A5 (US08063081-20111122-C00044.png) | 1977-09-02 | 1977-09-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2402297A1 FR2402297A1 (fr) | 1979-03-30 |
| FR2402297B1 true FR2402297B1 (US08063081-20111122-C00044.png) | 1984-02-10 |
Family
ID=4365548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7825256A Granted FR2402297A1 (fr) | 1977-09-02 | 1978-09-01 | Cathode a emission electronique |
Country Status (5)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023456B2 (ja) * | 1978-11-01 | 1985-06-07 | 電気化学工業株式会社 | 熱電子陰極装置 |
| FR2445605A1 (fr) * | 1978-12-27 | 1980-07-25 | Thomson Csf | Cathode a chauffage direct et tube electronique haute frequence comportant une telle cathode |
| DE3120454A1 (de) * | 1981-05-22 | 1982-12-09 | geb. Vlasova Margarita Sergeevna Moskva Čupina | Feldemissionskatode |
| JPS57196443A (en) * | 1981-05-29 | 1982-12-02 | Denki Kagaku Kogyo Kk | Manufacture of hot cathode |
| CH672860A5 (US08063081-20111122-C00044.png) * | 1986-09-29 | 1989-12-29 | Balzers Hochvakuum | |
| JP6636472B2 (ja) * | 2017-02-28 | 2020-01-29 | 株式会社日立ハイテクノロジーズ | 電子源およびそれを用いた電子線装置 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1061633A (fr) * | 1951-03-28 | 1954-04-14 | Thomson Houston Comp Francaise | Substances à pouvoir émissif élevé |
| GB1045396A (en) * | 1965-07-23 | 1966-10-12 | Standard Telephones Cables Ltd | Thermionic cathodes |
| GB1210007A (en) * | 1968-07-05 | 1970-10-28 | Mullard Ltd | Cathode |
| US3532923A (en) * | 1969-03-17 | 1970-10-06 | Ibm | Pyrolytic graphite support for lanthanum hexaboride cathode emitter |
| US3803677A (en) * | 1972-04-28 | 1974-04-16 | Air Liquide | Method for making cathodes for electron guns |
| JPS607335B2 (ja) * | 1974-11-29 | 1985-02-23 | カナデイアン、パテンツ、アンド、デイベラツプメント、リミテツド | 熱電子放射陰極 |
| JPS53128971A (en) * | 1977-04-18 | 1978-11-10 | Hitachi Ltd | Manufacture of electron radiation cathode |
-
1977
- 1977-09-02 CH CH1066577A patent/CH617793A5/de not_active IP Right Cessation
-
1978
- 1978-07-21 DE DE19782832027 patent/DE2832027B2/de active Granted
- 1978-07-21 DE DE19787821817 patent/DE7821817U1/de not_active Expired
- 1978-08-02 GB GB7831971A patent/GB2003655B/en not_active Expired
- 1978-08-03 NL NL7808183A patent/NL7808183A/xx not_active Application Discontinuation
- 1978-09-01 FR FR7825256A patent/FR2402297A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB2003655A (en) | 1979-03-14 |
| DE7821817U1 (de) | 1987-06-04 |
| DE2832027A1 (de) | 1979-03-15 |
| NL7808183A (nl) | 1979-03-06 |
| CH617793A5 (US08063081-20111122-C00044.png) | 1980-06-13 |
| GB2003655B (en) | 1982-05-26 |
| DE2832027C3 (US08063081-20111122-C00044.png) | 1987-05-07 |
| DE2832027B2 (de) | 1981-07-09 |
| FR2402297A1 (fr) | 1979-03-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |