FR966907A - Improvements in electrode coating for discharge devices - Google Patents

Improvements in electrode coating for discharge devices

Info

Publication number
FR966907A
FR966907A FR966907DA FR966907A FR 966907 A FR966907 A FR 966907A FR 966907D A FR966907D A FR 966907DA FR 966907 A FR966907 A FR 966907A
Authority
FR
France
Prior art keywords
discharge devices
electrode coating
electrode
coating
discharge
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.)
Expired
Application number
Other languages
French (fr)
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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.)
Filing date
Publication date
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Application granted granted Critical
Publication of FR966907A publication Critical patent/FR966907A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
FR966907D 1947-06-05 1948-05-28 Improvements in electrode coating for discharge devices Expired FR966907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US752698A US2530394A (en) 1947-06-05 1947-06-05 Electrode coating for discharge devices

Publications (1)

Publication Number Publication Date
FR966907A true FR966907A (en) 1950-10-20

Family

ID=25027406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR966907D Expired FR966907A (en) 1947-06-05 1948-05-28 Improvements in electrode coating for discharge devices

Country Status (5)

Country Link
US (1) US2530394A (en)
BE (1) BE482916A (en)
DE (1) DE974434C (en)
FR (1) FR966907A (en)
GB (1) GB655123A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068380B (en) * 1954-03-01
DE1021482B (en) * 1952-04-24 1957-12-27 Egyesuelt Izzolampa Process for the production of an oxide cathode for low-pressure discharge lamps and other gas-filled electrical discharge tubes
DE974888C (en) * 1952-03-24 1961-05-25 Philips Nv Process for the manufacture of a cathode for electrical discharge tubes

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966927C (en) * 1951-09-23 1957-09-19 Quarzlampen Gmbh Electric high pressure discharge lamp
BE524490A (en) * 1952-11-22
BE526330A (en) * 1953-02-09
US3069580A (en) * 1953-10-28 1962-12-18 Sylvania Electric Prod Fluorescent lamp
BE545445A (en) * 1955-02-23
US2935637A (en) * 1957-03-05 1960-05-03 Thomas M Cortese Fluorescent lamp
US5471110A (en) * 1991-12-23 1995-11-28 Philips Electronics North America Corporation High pressure discharge lamp having filament electrodes
JPH06223776A (en) * 1992-12-02 1994-08-12 Matsushita Electric Works Ltd Electrode for fluorescent lamp
NL193963C (en) * 1994-05-04 2001-03-02 Matsushita Electric Works Ltd Electrode for use in a fluorescent lamp and method for its manufacture.
EP1652213A2 (en) * 2003-07-29 2006-05-03 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp having determined probability of failure

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1823984A (en) * 1926-05-13 1931-09-22 Communications Patents Inc Cathode for thermionic devices
NL23762C (en) * 1928-04-13
DE597580C (en) * 1928-05-01 1934-05-26 Osram G M B H Komm Ges Electric light or ultraviolet radiation tubes
US1903144A (en) * 1928-06-19 1933-03-28 Electrons Inc Rectifying tube
DE627617C (en) * 1928-09-21 1936-03-19 Osram G M B H Ignition device for electric gas discharge lamps with an elongated discharge path
US1925648A (en) * 1928-09-21 1933-09-05 Hans J Spanner Lighting device
US1883898A (en) * 1928-12-14 1932-10-25 Westinghouse Electric & Mfg Co Thermionic cathode
US2097261A (en) * 1929-04-30 1937-10-26 Spanner Hans Joachim Lighting device
DE627520C (en) * 1929-05-05 1936-03-17 Osram G M B H Komm Ges Electric discharge tubes of any filling with glow electrodes and discharge through the positive column
FR694941A (en) * 1929-07-02 1930-12-09 Discharge tubes, in particular luminescent and irradiating tubes
DE624620C (en) * 1929-08-19 1936-01-24 Linde Eismasch Ag Process for separating fumes from gases
NL35601C (en) * 1930-06-16
DE581872C (en) * 1930-06-17 1933-08-04 Osram G M B H Komm Ges Electric discharge tubes
DE696506C (en) * 1930-12-07 1940-09-23 Osram G M B H Komm Ges Electric high pressure discharge tubes for lighting addition of a vaporizable metal
DE606407C (en) * 1932-12-06 1934-12-01 Patra Patent Treuhand Incandescent cathode for electric light tubes, which has two superimposed layers of different alkaline earth metal oxides
US2249672A (en) * 1936-12-10 1941-07-15 Gen Electric Discharge device
US2238595A (en) * 1938-09-29 1941-04-15 Westinghouse Electric & Mfg Co Oxide coated cathode
NL76841C (en) * 1940-11-23

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974888C (en) * 1952-03-24 1961-05-25 Philips Nv Process for the manufacture of a cathode for electrical discharge tubes
DE1021482B (en) * 1952-04-24 1957-12-27 Egyesuelt Izzolampa Process for the production of an oxide cathode for low-pressure discharge lamps and other gas-filled electrical discharge tubes
DE1068380B (en) * 1954-03-01

Also Published As

Publication number Publication date
BE482916A (en)
US2530394A (en) 1950-11-21
DE974434C (en) 1960-12-22
GB655123A (en) 1951-07-11

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