GB496085A - Improvements in electric discharge tubes containing luminous screens - Google Patents

Improvements in electric discharge tubes containing luminous screens

Info

Publication number
GB496085A
GB496085A GB2980/38A GB298038A GB496085A GB 496085 A GB496085 A GB 496085A GB 2980/38 A GB2980/38 A GB 2980/38A GB 298038 A GB298038 A GB 298038A GB 496085 A GB496085 A GB 496085A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
discharge tubes
tubes containing
containing luminous
halides
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
GB2980/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB496085A publication Critical patent/GB496085A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
    • C09K11/562—Chalcogenides
    • C09K11/565—Chalcogenides with zinc cadmium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

496,085. Luminescent screens. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Jan. 31, 1938, No. 2980. Convention date, Feb. 3, 1937. [Class 98 (i)] In electric discharge tubes having an incandescent cathode and a luminescent screen in a common discharge space, the screen consists of zinc sulphide or zinc-cadmium sulphide which has been freed from halides other than occluded halides to such an extent that upon extraction by water the presence of halide in the extraction water cannot be detected. The test may be performed by means of silver, nitrate.
GB2980/38A 1937-02-03 1938-01-31 Improvements in electric discharge tubes containing luminous screens Expired GB496085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE496085X 1937-02-03

Publications (1)

Publication Number Publication Date
GB496085A true GB496085A (en) 1938-11-24

Family

ID=6544982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2980/38A Expired GB496085A (en) 1937-02-03 1938-01-31 Improvements in electric discharge tubes containing luminous screens

Country Status (1)

Country Link
GB (1) GB496085A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660566A (en) * 1952-08-29 1953-11-24 Gen Electric Electroluminescent zinc sulfide phosphor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660566A (en) * 1952-08-29 1953-11-24 Gen Electric Electroluminescent zinc sulfide phosphor

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