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
GB2628/53A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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Filing date
Publication date
Application filed by Egyesuelt Izzolampa es Villamossagi RtfiledCriticalEgyesuelt Izzolampa es Villamossagi Rt
Publication of GB719195ApublicationCriticalpatent/GB719195A/en
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)
Luminescent Compositions
(AREA)
Discharge Lamp
(AREA)
Abstract
719,195. Cathode materials and processing. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R.T. Jan. 29, 1953 [April 22, 1952], No. 2628/53. Addition to 673,438. Class 39(1) The coating composition containing specified proportions of the oxides of barium strontium and calcium according to the parent Specification contains also zirconium dioxide which may be added thereto or precipitated with the other oxides. The cathode may be used in fluorescent lamps or vacuum tubes.
GB2628/53A1952-04-221953-01-29Improvements in oxide cathodes for electric discharge tubes
ExpiredGB719195A
(en)