US3246988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated acyl hydroquinone derivative developers
Assignee: Eastman Kodak Co
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Filing: 1964-05-08
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Granted: 1966-04-19
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Porter
- 👤 Thomas E Gompf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:37
CPC Classifications
G; G03; G03C; 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: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR FORMING A VISIBLE PHOTOGRAPHIC IMAGE COMPRISING DEVELOPING A PHOTOEXPOSED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHOTOGRAPHIC ELEMENT, A WATER-PERMEABLE HYDROPHILIC COLLOID LAYER CONTAINING AN ACYL COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
45 words
A PROCESS FOR FORMING A VISIBLE PHOTOGRAPHIC IMAGE COMPRISING DEVELOPING A PHOTOEXPOSED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHOTOGRAPHIC ELEMENT, A WATER-PERMEABLE HYDROPHILIC COLLOID LAYER CONTAINING AN ACYL COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |