GB527685A - Improvements in sources of light comprising luminescent materials - Google Patents
Improvements in sources of light comprising luminescent materialsInfo
- Publication number
- GB527685A GB527685A GB1179039A GB1179039A GB527685A GB 527685 A GB527685 A GB 527685A GB 1179039 A GB1179039 A GB 1179039A GB 1179039 A GB1179039 A GB 1179039A GB 527685 A GB527685 A GB 527685A
- Authority
- GB
- United Kingdom
- Prior art keywords
- luminescent materials
- tungstate
- sources
- light
- luminescent
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
527,685. Luminescent materials. GENERAL ELECTRIC CO., Ltd., BOWTELL, J. N., JENKINS, H. G., and McKEAG, A. H. April 19, 1939, No. 11790. [Class 39 (i)] Cadmium tungstate is used as a luminescent material in or on an electric discharge lamp with a mercury or neon filling. The preparation of the tungstate from specified proportions of sodium tungstate and calcium sulphate and its subsequent treatment is described. Lead may be used as activator. Specifications 469,913, 469,732, 504,354 and 515,298 are referred to. Reference has been directed by the Comptroller to Specification 485,329.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1179039A GB527685A (en) | 1939-04-19 | 1939-04-19 | Improvements in sources of light comprising luminescent materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1179039A GB527685A (en) | 1939-04-19 | 1939-04-19 | Improvements in sources of light comprising luminescent materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527685A true GB527685A (en) | 1940-10-14 |
Family
ID=9992748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1179039A Expired GB527685A (en) | 1939-04-19 | 1939-04-19 | Improvements in sources of light comprising luminescent materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB527685A (en) |
-
1939
- 1939-04-19 GB GB1179039A patent/GB527685A/en not_active Expired
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