US3147226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fritting luminescent materials for intensifying screens
Assignee: Merck KGaA
•
Filing: 1961-05-03
•
Granted: 1964-09-01
•
Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jonck Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A THALLIUM ACTIVATED ALKALI IODIDE PHOSPHOR CONTAINING SILICON DIOXIDE, THE PARTICLE SIZE OF SAID PHOSPHOR BEING FROM 1-50U, THE RATIO OF THE THALLIUM ACTIVATED ALKALI IODIDE TO THE SILCON DIOXIDE, IN PARTS BY WEIGHT, BEING 100:0.05 TO 7 RESPECTIVELY, AND SAID SILCON DIOXIDE HAVING A PARTICLE SIZE OF ABOUT 1-100 MU, BEING STABLE AT LEST UP TO THE MELTING POINT OF SAID ALKALI IODIDE, AND BEING ADDED TO SAID THALLIUM ACTIVATED ALKALI IODIDE PRIOR TO SEPARATING THE ACTIVATED ALKALI IODIDE FROM ITS MOTHER LIQUOR.
Claim 2
Dependent Claim
84 words
A THALLIUM ACTIVATED ALKALI IODIDE PHOSPHOR CONTAINING SILICON DIOXIDE, THE PARTICLE SIZE OF SAID PHOSPHOR BEING FROM 1-50U, THE RATIO OF THE THALLIUM ACTIVATED ALKALI IODIDE TO THE SILCON DIOXIDE, IN PARTS BY WEIGHT, BEING 100:0.05 TO 7 RESPECTIVELY, AND SAID SILCON DIOXIDE HAVING A PARTICLE SIZE OF ABOUT 1-100 MU, BEING STABLE AT LEST UP TO THE MELTING POINT OF SAID ALKALI IODIDE, AND BEING ADDED TO SAID THALLIUM ACTIVATED ALKALI IODIDE PRIOR TO SEPARATING THE ACTIVATED ALKALI IODIDE FROM ITS MOTHER LIQUOR.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |