US2606835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic element
Assignee: EIDP Inc
•
Filing: 1947-09-02
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Granted: 1952-08-12
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Expires: 1967-09-02
Abstract
No abstract record available.
Inventors
- 👤 Jennings Andrew Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:13
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/327; G03C7/3275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SHEET SUPPORT BEARING A LAYER OF LIGHT-SENSITIVE, GELATINO-SILVER HALIDE EMULSION ADMIXED WITH ASYNTHETIC HYDROXYL POLYMER AND IN CONTACT WITH SAID EMULSION LAYER AT LEAST ONE LIGHT-SENSITIVE LAYER COMPOSED OF A SYNTHETIC HYDROXYL POLYMER CONTAINING A PLURALITY OF COLOR-FORMER NUCLEI LINKED TO THE POLYMER CHAIN, SAID NUCLEI POSSESSING A STRUCTURE OF THE FORMULA:
Claim 2
Dependent Claim
57 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SHEET SUPPORT BEARING A LAYER OF LIGHT-SENSITIVE, GELATINO-SILVER HALIDE EMULSION ADMIXED WITH ASYNTHETIC HYDROXYL POLYMER AND IN CONTACT WITH SAID EMULSION LAYER AT LEAST ONE LIGHT-SENSITIVE LAYER COMPOSED OF A SYNTHETIC HYDROXYL POLYMER CONTAINING A PLURALITY OF COLOR-FORMER NUCLEI LINKED TO THE POLYMER CHAIN, SAID NUCLEI POSSESSING A STRUCTURE OF THE FORMULA:
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |