Patent US278260A successfully refreshed from Google Patents.
Patent US3269956A successfully refreshed from Google Patents.
US3269956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing rare earth activated zinc sulfide phosphors and products thereof
Assignee: RCA Corp
•
Filing: 1963-05-20
•
Granted: 1966-08-30
•
Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Larach Simon
- 👤 Perry N Yocom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:26
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; C; C09; C09K; C09K11/00; C09K11/08; C09K11/0805; C09K11/0811; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/20; H05; H05B; H05B33/00; H05B33/12; H05B33/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A METHOD FOR PREPARING A LUMINESCENT MATERIAL COMPRISING REACTING A HOST MATERIAL SELECTED FROM THE GROUP CONSISTING OF SINGLE AND MIXED CHALCOGENIDES OF ZINC CADMIUM, AND ZINC-CADMIUM WITH 0.001 TO 5.0 MOL PERCENT OF AT LEAST ONE RARE EARTH ELEMENT, AS A HALIDE THEREOF, AND 0.000 TO 1.0 MOL PERCENT COPPER AS A HALIDE THEREOF, IN AN OXYGEN-FREE NON-OXIDIZING AMBIENT ATMOSPHERE AT TEMPERATURES BETWEEN 700 AND 1400*C. FOR 0.01 TO 10 HOURS.
Claim 2
Independent Claim
72 words
A METHOD FOR PREPARING A LUMINESCENT MATERIAL COMPRISING REACTING A HOST MATERIAL SELECTED FROM THE GROUP CONSISTING OF SINGLE AND MIXED CHALCOGENIDES OF ZINC CADMIUM, AND ZINC-CADMIUM WITH 0.001 TO 5.0 MOL PERCENT OF AT LEAST ONE RARE EARTH ELEMENT, AS A HALIDE THEREOF, AND 0.000 TO 1.0 MOL PERCENT COPPER AS A HALIDE THEREOF, IN AN OXYGEN-FREE NON-OXIDIZING AMBIENT ATMOSPHERE AT TEMPERATURES BETWEEN 700 AND 1400*C. FOR 0.01 TO 10 HOURS.
Claim 3
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATED WITH 0.001 TO 5.0 MOL PERCENT GADOLINIUM.
Claim 4
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATED WITH 0.001 TO 5.0 MOL PERCENT GADOLINIUM.
Claim 5
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATED WITH 0.001 TO 5.0 MOL PERCENT TERBIUM.
Claim 6
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATED WITH 0.001 TO 5.0 MOL PERCENT TERBIUM.
Claim 7
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATIED WITH 0.001 TO 5.0 MOL PERCENT HOLMIUM.
Claim 8
Dependent Claim
16 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF ZINC SULFIDE ACTIVATIED WITH 0.001 TO 5.0 MOL PERCENT HOLMIUM.
References Cited (Backward Citations)
US2798854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |