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US5567352A
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Phosphor and method of making same
Assignee: Osram Sylvania Inc
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Filing: 1995-04-20
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Granted: 1996-10-22
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Expires: 2015-04-20
Abstract
Abstract Inorganic intercalation phosphors were made by doping an inorganic intercalation compound having an atomic structure interspersed with vacant spaces with selected activator ions capable of luminescent emission when excited by ultraviolet light and/or cathode rays.
Inventors
- 👤 Ru-Yi Qi
- 👤 Ronald E. Karam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
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; H; H05; H05B; H05B33/00; H05B33/12; H05B33/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
23 words
A phosphor having the general formula NaH(Zn 1-x Mn x PO 4 ) 2 where x is between about 0.02 to about 0.12.
Claim 2
Dependent Claim
23 words
A phosphor having the general formula NaH(Zn 1-x Mn x PO 4 ) 2 where x is between about 0.02 to about 0.12.
Claim 3
Dependent Claim
10 words
The phosphor of claim 1 wherein x is about 0.06.
Claim 4
Independent Claim
83 words
A method for making a phosphor having the general formula NaH(Zn 1-x Mn x PO 4 ) 2 , where x is between about 0.02 to about 0.12, comprising the steps of forming an aqueous mixture by combining appropriate quantities of NaH 2 PO 4 ·H 2 O, MnCl 2 ·4H 2 O, and aqueous solutions of NaOH and Zn(NO 3 ) 2 , with water, and heating the aqueous mixture in an enclosed vessel at about 70° C. for about 4-5 days.
Claim 5
Independent Claim
83 words
A method for making a phosphor having the general formula NaH(Zn 1-x Mn x PO 4 ) 2 , where x is between about 0.02 to about 0.12, comprising the steps of forming an aqueous mixture by combining appropriate quantities of NaH 2 PO 4 ·H 2 O, MnCl 2 ·4H 2 O, and aqueous solutions of NaOH and Zn(NO 3 ) 2 , with water, and heating the aqueous mixture in an enclosed vessel at about 70° C. for about 4-5 days.
Claim 6
Dependent Claim
23 words
The method of claim 3 wherein the aqueous solutions of NaOH and Zn(NO 3 ) 2 have concentrations of 4M and 2M, respectively.
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) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-22 | 2008-04-22 | 2008-10-22 | $7700.00 | Window Closed / Lapsed |