US3249440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-sensitive elements and their preparation
Assignee: EIDP Inc
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Filing: 1963-03-15
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Granted: 1966-05-03
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hunt Heman Dowd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/49
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A RADIATION-SENSITIVE, DIRECT-WRITING, LIGHT-DEVELOPABLE LAYER COMPRISING AN ADMIXTURE OF (1) AN EMULSION OF LIGHTSENSITIVE SILVER HALIDE GRAINS HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF 0.1 TO 10.0 MICRONS IN ITS GREATEST DIAMETER AND A WATER-PERMEABLE MACROMOLECULAR ORGANIC COLLOID BINDER, AND (2) MOLECULAR IODINE (I2) IN AN AMOUNT FROM ABOUT 0.26 MOL PERCENT TO 15.0 MOL PERCENT, SAID MOLECULAR IODINE BEING THE ONLY ENERGETIC HALOGEN ACCEPTOR PRESENT IN AMOUNTS GREATER THAN 0.1 MOL PERCENT, THE MOL PERCENTAGES BEING BASED ON THE SILVER HALIDE.
Claim 2
Dependent Claim
91 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A RADIATION-SENSITIVE, DIRECT-WRITING, LIGHT-DEVELOPABLE LAYER COMPRISING AN ADMIXTURE OF (1) AN EMULSION OF LIGHTSENSITIVE SILVER HALIDE GRAINS HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF 0.1 TO 10.0 MICRONS IN ITS GREATEST DIAMETER AND A WATER-PERMEABLE MACROMOLECULAR ORGANIC COLLOID BINDER, AND (2) MOLECULAR IODINE (I2) IN AN AMOUNT FROM ABOUT 0.26 MOL PERCENT TO 15.0 MOL PERCENT, SAID MOLECULAR IODINE BEING THE ONLY ENERGETIC HALOGEN ACCEPTOR PRESENT IN AMOUNTS GREATER THAN 0.1 MOL PERCENT, THE MOL PERCENTAGES BEING BASED ON THE SILVER HALIDE.
Claim 3
Dependent Claim
38 words
AN ELEMENT ACCORDING TO CLAIM 1 WHEREIN (3) A WATER SOLUBLE HALIDE IS PRESENT IN AN AMOUNT SUFFICIENT TO PROVIDE BROMIDE IONS IN EXCESS OF THOSE NECESSARY INITIALLY TO PRECIPITATE ALL OF THE SILVER IONS AS SILVER HALIDE.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |