US6203726B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphor Materials
Assignee: Freeslate Inc
•
Filing: 1999-10-07
•
Granted: 2001-03-20
•
Expires: 2019-10-07
Abstract
Abstract This invention relates generally to new luminescent materials. Specifically, this invention relates to the discovery of phosphor materials in the forms of A 2 BX 4 , ABX 4-y :M and A 3-z B 5 X 12 :M z . More specifically, this invention relates to the discovery of phosphor materials having compositions of matter in the forms, Sr 2 CeO 4 , (Y 0.82 Al 0.07 La 0.06 )VO 4 :Eu 0.05 and (Y 0.5 Gd 0.5 ) 2.97 (Al 0.5 Gd 0.5 ) 5 O 12 :Ce 0.03 .
Inventors
- 👤 Earl Danielson
- 👤 Martin Devenney
- 👤 Daniel M. Giaquinta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0046; B82; B82Y; B82Y25/00; C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7715; C09K11/7716; C09K11/7718; C09K11/7766; C09K11/7774; C09K11/7783; C09K11/7794; B01J2219/00; B01J2219/00274; B01J2219/00277; B01J2219/00351; B01J2219/00427; B01J2219/0043; B01J2219/00436; B01J2219/00443; B01J2219/00445; B01J2219/00497; B01J2219/00527; B01J2219/00536; B01J2219/00583; B01J2219/00585; B01J2219/00596; B01J2219/00603; B01J2219/00605; B01J2219/00612; B01J2219/00632; B01J2219/00637; B01J2219/00659; B01J2219/0068; B01J2219/00702; B01J2219/00718; B01J2219/00745; B01J2219/0075; B01J2219/00752; B01J2219/00754; B01J2219/00756; C40; C40B; C40B40/00; C40B40/18; C40B60/00; C40B60/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x is between about 0.3 and about 0.6, y is between about 0.3 and about 0.6, and z is between about 0.01 and about 0.06, stimulating the phosphor with energy in the range of about 325 nm to about 375 nm and about 400 to about 500 nn and observing luminescence from said phosphor.
Claim 2
Independent Claim
84 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x is between about 0.3 and about 0.6, y is between about 0.3 and about 0.6, and z is between about 0.01 and about 0.06, stimulating the phosphor with energy in the range of about 325 nm to about 375 nm and about 400 to about 500 nn and observing luminescence from said phosphor.
Claim 3
Dependent Claim
12 words
The method of claim 1 , wherein said luminescence observed is photoluminescence.
Claim 4
Independent Claim
83 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x is between about 0.3 and about 0.6, y is between about 0.3 and about 0.6, and z is between about 0.01 and about 0.06, stimulating the phosphor with radiation and observing photoluminescence from said phosphor; and further wherein said radiation is in range of from about 400 nm to about 500 nm.
Claim 5
Independent Claim
83 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x is between about 0.3 and about 0.6, y is between about 0.3 and about 0.6, and z is between about 0.01 and about 0.06, stimulating the phosphor with radiation and observing photoluminescence from said phosphor; and further wherein said radiation is in range of from about 400 nm to about 500 nm.
Claim 6
Dependent Claim
17 words
The method of claim 3 , wherein x and y are both 0.5 and z is 0.03.
Claim 7
Dependent Claim
19 words
The method of claim 3 wherein said radiation is in the range of about 425 to about 475 nm.
Claim 8
Independent Claim
82 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x does not exceed 1, y does not exceed 1, and z is between about 0.01 and about 0.06, stimulating the phosphor with a blue light source; and observing luminescence from said phosphor; and further wherein said blue light source is in range of from about 425 nm to about 475 nm.
Claim 9
Independent Claim
82 words
A method for providing luminescence comprising providing a phosphor comprising the general formula: (Y 1-x Gd x ) 3-z (Al 1-y Ga y ) 5 O 12 :Ce z wherein x does not exceed 1, y does not exceed 1, and z is between about 0.01 and about 0.06, stimulating the phosphor with a blue light source; and observing luminescence from said phosphor; and further wherein said blue light source is in range of from about 425 nm to about 475 nm.
Claim 10
Dependent Claim
10 words
The method of claim 6 , wherein z is 0.03.
Claim 11
Dependent Claim
21 words
The method of claim 6 , wherein at least a portion of said blue light source is a light emitting diode.
Claim 12
Dependent Claim
12 words
The method of claim 6 , wherein said luminescence observed is photoluminescence.
References Cited (Backward Citations)
US4550256A
Cited
US5998925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-19 | 2004-09-18 | 2005-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-19 | 2008-09-18 | 2009-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-19 | 2012-09-18 | 2013-03-20 | $7700.00 | Window Closed / Lapsed |