GB694529A - Improvements in and relating to luminescent materials - Google Patents

Improvements in and relating to luminescent materials

Info

Publication number
GB694529A
GB694529A GB7747/51A GB774751A GB694529A GB 694529 A GB694529 A GB 694529A GB 7747/51 A GB7747/51 A GB 7747/51A GB 774751 A GB774751 A GB 774751A GB 694529 A GB694529 A GB 694529A
Authority
GB
United Kingdom
Prior art keywords
luminescent materials
mols
april
trace
oxides
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
GB7747/51A
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
Publication of GB694529A publication Critical patent/GB694529A/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
    • C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
    • C09K11/68—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten

Abstract

694,529. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. April 3, 1951 [April 28, 1950], No. 7747/51. Class 39(i) A fluorescent material comprises calcium magnesium tungstate activated by lead and containing a small amount of lithium or sodium. The oxides or carbonates of the elements or compounds yielding the oxides are fired at 1875‹F. and refired at 1650‹F., though these temperatures are not critical. The amounts of the respective metals in the phosphor with respect to calcium carbonate or its equivalent are magnesium 0.1-0.4 mols, lead 0.005-0.02 mols, lithium a trace to 0.03 per cent or sodium a trace to 0.06 per cent by weight.
GB7747/51A 1950-04-28 1951-04-03 Improvements in and relating to luminescent materials Expired GB694529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US694529XA 1950-04-28 1950-04-28

Publications (1)

Publication Number Publication Date
GB694529A true GB694529A (en) 1953-07-22

Family

ID=22089059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7747/51A Expired GB694529A (en) 1950-04-28 1951-04-03 Improvements in and relating to luminescent materials

Country Status (1)

Country Link
GB (1) GB694529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017202676B2 (en) * 2011-12-27 2018-11-29 Myung Ah Kim Venturi sprinkler for controlling smoke and apparatus for removing poisonous gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017202676B2 (en) * 2011-12-27 2018-11-29 Myung Ah Kim Venturi sprinkler for controlling smoke and apparatus for removing poisonous gas

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