US2759822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray film
Assignee: Eastman Kodak Co
•
Filing: 1952-06-04
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Granted: 1956-08-21
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Expires: 1972-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jean E Jones
- 👤 Frederick H Reed
- 👤 John A Kuniskis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:16
CPC Classifications
G; G03; G03B; G03B15/00; G03C; G03C5/00; G03C5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT SUITABLE FOR USE IN X-RAY PHOTOGRAPHY COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION ON EACH SIDE OF THE SUPPORT, SAID EMULSIONS CONTAINING A POLYMETHINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
40 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT SUITABLE FOR USE IN X-RAY PHOTOGRAPHY COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION ON EACH SIDE OF THE SUPPORT, SAID EMULSIONS CONTAINING A POLYMETHINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |