US3033678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-sensitive silver halide emulsions and elements, and processes of developing the same
Assignee: EIDP Inc
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Filing: 1960-10-11
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Granted: 1962-05-08
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 Hunt Heman Dowd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C1/00; G03C1/005; G03C1/49
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A PROCESS FOR IMPROVING THE BACKGROUND DENSITY OF A LOCLIZED RADIATION-EXPOSED, LIGHT-DEVELOPABLE, DIRECTWRITING, RADIATION-SENSITIVE PHOTOGRAPHIC EEMENT HAVING A SUPPORT BEARING A LAYER OF A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING FROM 0.5 TO 120 MOLE PERCENT OF A STANNOUS SALT BASED ON THE SILVER HALIDE, CHARACTERIZED BY HEATING THE EXPOSED ELEMENT TO A TEMPERATURE OF AT LEAST 200* F. BUT BELOW THE DECOMPOSITION TEMPERATURE OF THE ELEMENT, AND THEN DEVELOPING THE IMAGE BY OVERALL EXPOSURE OF SAID LAYER TO RADIATION OF WAVELENGTH IN THE RANGE 350 TO 700 MILLIMCRONS, FOR 0.2 TO ABOUT 15 SECONDS, WHILE MAINTAINING SAID TEMPERATURE FOR AT LEAST PART OF THE LIGHT-DEVELOPMENT STEP.
References Cited (Backward Citations)
US2487850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |