US3047416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making luminescent articles
Assignee: National Research Corp
•
Filing: 1959-05-13
•
Granted: 1962-07-31
•
Expires: 1979-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Winston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/61; C09K11/611; C09K11/612; H; H05; H05B; H05B33/00; H05B33/12; H05B33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF CONTROLLING THE COLOR OF ELECTROLUMINESCENT PHOSPHORS WHEREIN A HOST MATERIAL CONSISTING OF ZINC SULFIDE TOGETHER WITH ACTIVATING MATERIALS CONSISTING OF COPPER AND CHLORINE ARE VAPORIZED AND CONDENSED IN VACUUM ON A SUBSTRATE TO PRODUCE A COLOR-EMITTING ELECTROLUMINESCENT PHOSPHOR COMPRISING CONTROLLING THE ACCOMODATION COEFFICIENTS OF SAID ACTIVATING MATERIALS BY HEATING SAID SUBSTRATE BY RADIATION TO A TEMPERATURE BETWEEN 80* C. AND 300*C., SAID ACCOMMODATION COEFFICIENT EFFECTING THE AMOUNTS OF SAID ACTIVATING MATERIALS AND THE RATIOS OF SAID ACTIVATING MATERIALS DEPOSITED TO PROVIDE A PHOSPHOR FILM HAVING AN ENERGY LEVEL STRUCTURE PRODUCING A COLOR-EMITTING WAVELENGTH WHEN SUBJECTED TO AND ELECTRIC FIELD, SAID ENERGY LEVEL STRUCTURE AND RESULTING COLOR-EMITTING WAVELENGTH BEING A FUNCTION OF THE SUBSTRAE TEMPERATURE.
Claim 2
Independent Claim
117 words
A METHOD OF CONTROLLING THE COLOR OF ELECTROLUMINESCENT PHOSPHORS WHEREIN A HOST MATERIAL CONSISTING OF ZINC SULFIDE TOGETHER WITH ACTIVATING MATERIALS CONSISTING OF COPPER AND CHLORINE ARE VAPORIZED AND CONDENSED IN VACUUM ON A SUBSTRATE TO PRODUCE A COLOR-EMITTING ELECTROLUMINESCENT PHOSPHOR COMPRISING CONTROLLING THE ACCOMODATION COEFFICIENTS OF SAID ACTIVATING MATERIALS BY HEATING SAID SUBSTRATE BY RADIATION TO A TEMPERATURE BETWEEN 80* C. AND 300*C., SAID ACCOMMODATION COEFFICIENT EFFECTING THE AMOUNTS OF SAID ACTIVATING MATERIALS AND THE RATIOS OF SAID ACTIVATING MATERIALS DEPOSITED TO PROVIDE A PHOSPHOR FILM HAVING AN ENERGY LEVEL STRUCTURE PRODUCING A COLOR-EMITTING WAVELENGTH WHEN SUBJECTED TO AND ELECTRIC FIELD, SAID ENERGY LEVEL STRUCTURE AND RESULTING COLOR-EMITTING WAVELENGTH BEING A FUNCTION OF THE SUBSTRAE TEMPERATURE.
References Cited (Backward Citations)
US2732312A
Cited
US2600579A
Cited
US2659678A
Cited
US2955958A
Cited
US2867541A
Cited
US2967111A
Cited
US2924732A
Cited
US2898225A
Cited
US2898226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |