US3023313A
Expired / Lapsed
US
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Method of making an X-ray image intensifying screen and resulting article
Assignee: Mallinckrodt Chemical Works
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Filing: 1958-10-13
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Granted: 1962-02-27
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Expires: 1978-10-13
Abstract
No abstract record available.
Inventors
- 👤 Mater George B De La
- 👤 Douglas W Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
G; G21; G21K; G21K4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/258
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF MAKING AN X-RAY INTENSIFYING SCREEN WHICH COMPRISES COATING A SHEET OF SUPPORTING MATERIAL WITH A SUSPENSION OF A MIXTURE OF A THALLIUM-ACTIVATED ALKALI METAL IODIDE AND A FINELY GROUND PIGMENT HAVING A REFRACTIVE INDEX NOT SUBSTANTIALLY LESS THAN 1.7 AND LOW ABSORPTIVITY FOR LIGHT IN THE BLUE-VIOLET-ULTRAVIOLET
Claim 2
Independent Claim
50 words
THE METHOD OF MAKING AN X-RAY INTENSIFYING SCREEN WHICH COMPRISES COATING A SHEET OF SUPPORTING MATERIAL WITH A SUSPENSION OF A MIXTURE OF A THALLIUM-ACTIVATED ALKALI METAL IODIDE AND A FINELY GROUND PIGMENT HAVING A REFRACTIVE INDEX NOT SUBSTANTIALLY LESS THAN 1.7 AND LOW ABSORPTIVITY FOR LIGHT IN THE BLUE-VIOLET-ULTRAVIOLET
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |