Patent US3345170A successfully refreshed from Google Patents.
US3345170A
Expired / Lapsed
US
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Light sensitive photographic elements containing developing agent precursors
Assignee: Eastman Kodak Co
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Filing: 1964-06-05
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Granted: 1967-10-03
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Francis J Evans
- 👤 Jr John W Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:41
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/36; G03C1/00; G03C1/005; G03C1/06; G03C1/42; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHTOGRAPHIC ELEMENT A WATER-PERMEABLE HYDROPHILIC COLLOID LAYER CONTAINING A COMPOUND SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
39 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHTOGRAPHIC ELEMENT A WATER-PERMEABLE HYDROPHILIC COLLOID LAYER CONTAINING A COMPOUND SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
32 words
A PROCESS FOR FORMING A PHOTORESIST COMPRISING EXPOSING A SUBSTANTIALLY UNHARDENED COLLOIDAL PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER CONTAINING A COMPOUND SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 4
Dependent Claim
32 words
A PROCESS FOR FORMING A PHOTORESIST COMPRISING EXPOSING A SUBSTANTIALLY UNHARDENED COLLOIDAL PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER CONTAINING A COMPOUND SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2592368A
Cited
US2716059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |