GB501252A - Improvements in or relating to electric incandescent lamps and discharge tubes - Google Patents
Improvements in or relating to electric incandescent lamps and discharge tubesInfo
- Publication number
- GB501252A GB501252A GB20398/38A GB2039838A GB501252A GB 501252 A GB501252 A GB 501252A GB 20398/38 A GB20398/38 A GB 20398/38A GB 2039838 A GB2039838 A GB 2039838A GB 501252 A GB501252 A GB 501252A
- Authority
- GB
- United Kingdom
- Prior art keywords
- changing
- red
- yellow
- compound
- cobalt
- 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
- 150000001875 compounds Chemical class 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 239000010941 cobalt Substances 0.000 abstract 3
- 229910017052 cobalt Inorganic materials 0.000 abstract 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 229910000906 Bronze Inorganic materials 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- KWQLUUQBTAXYCB-UHFFFAOYSA-K antimony(3+);triiodide Chemical compound I[Sb](I)I KWQLUUQBTAXYCB-UHFFFAOYSA-K 0.000 abstract 1
- 239000010974 bronze Substances 0.000 abstract 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000002845 discoloration Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- YFDLHELOZYVNJE-UHFFFAOYSA-L mercury diiodide Chemical compound I[Hg]I YFDLHELOZYVNJE-UHFFFAOYSA-L 0.000 abstract 1
- 229910052958 orpiment Inorganic materials 0.000 abstract 1
- 229910052957 realgar Inorganic materials 0.000 abstract 1
- 229910052959 stibnite Inorganic materials 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- 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
- H01J9/42—Measurement or testing during manufacture
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE217624X | 1937-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501252A true GB501252A (en) | 1939-02-23 |
Family
ID=5830861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20398/38A Expired GB501252A (en) | 1937-07-12 | 1938-07-09 | Improvements in or relating to electric incandescent lamps and discharge tubes |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE429096A (enrdf_load_stackoverflow) |
| CH (1) | CH217624A (enrdf_load_stackoverflow) |
| FR (1) | FR840585A (enrdf_load_stackoverflow) |
| GB (1) | GB501252A (enrdf_load_stackoverflow) |
| NL (1) | NL54814C (enrdf_load_stackoverflow) |
-
0
- BE BE429096D patent/BE429096A/xx unknown
- NL NL54814D patent/NL54814C/xx active
-
1938
- 1938-07-09 GB GB20398/38A patent/GB501252A/en not_active Expired
- 1938-07-12 FR FR840585D patent/FR840585A/fr not_active Expired
- 1938-07-12 CH CH217624D patent/CH217624A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE429096A (enrdf_load_stackoverflow) | |
| CH217624A (de) | 1941-10-31 |
| NL54814C (enrdf_load_stackoverflow) | |
| FR840585A (fr) | 1939-04-27 |
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