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US5616285A
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Phosphor and method of making same
Assignee: Global Tungsten and Powders LLC
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Filing: 1996-05-21
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Granted: 1997-04-01
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Expires: 2016-05-21
Abstract
Abstract Electroluminescent phosphors having substantially increased luminance and maintenance over that of prior art electroluminescent phosphors may be made by (1) doping an inorganic intercalation compound having an atomic structure interspersed with vacant spaces, with selected activator ions capable of luminescent emission, and (2) introducing organic monomers or other conductive material into the vacant spaces of the atomic structure of the doped inorganic intercalation compound. The organic monomers may be polymerized in situ to form conductive polymers therein.
Inventors
- 👤 Yan Zhang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:43
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; C09K11/08; C09K11/0805; C09K11/59; C09K11/592; C09K11/61; C09K11/611; C09K11/64; C09K11/646; C09K11/67; C09K11/671; C09K11/77; C09K11/7728; C09K11/77344
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A phosphor comprising a layered perovskite having the general formula KLaNb 2 O 7 activated with bismuth.
Claim 2
Dependent Claim
17 words
A phosphor comprising a layered perovskite having the general formula KLaNb 2 O 7 activated with bismuth.
Claim 3
Dependent Claim
23 words
The phosphor of claim 1 wherein the bismuth activator has a concentration of about 0.005 to about 0.01 moles per mole of phosphor.
Claim 4
Dependent Claim
17 words
The phosphor of claim 2 wherein the bismuth concentration is about 0.01 moles per mole of phosphor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-31 | 2000-09-30 | 2001-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-31 | 2004-09-30 | 2005-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-31 | 2008-09-30 | 2009-04-01 | $7700.00 | Window Closed / Lapsed |