Patent US3128182A successfully refreshed from Google Patents.
US3128182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide solvent containing developers and process
Assignee: Eastman Kodak Co
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Filing: 1961-10-23
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Granted: 1964-04-07
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Charleton C Bard
- 👤 Allan G Millikan
- 👤 Jr Deane S Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:16
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONSISTING OF AN AQUEOUS ALKALINE SOLUTION COMPRISING A PHOTOGRAPHIC DEVELOPING AGENT AND A SILVER HALIDE SOLVENT COMPRISING A CYCLOHEXANE CONTAINING AN AMINO RADICAL ATTACHED TO THE CARBOCYCLIC RING THEREOF AND IN ADDITION TO SAID AMINO RADICAL, A POLAR SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF AN AMINO RADICAL, A HYDROXYL RADICAL AND A HYDROXYALKYL RADICAL.
Claim 2
Dependent Claim
59 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONSISTING OF AN AQUEOUS ALKALINE SOLUTION COMPRISING A PHOTOGRAPHIC DEVELOPING AGENT AND A SILVER HALIDE SOLVENT COMPRISING A CYCLOHEXANE CONTAINING AN AMINO RADICAL ATTACHED TO THE CARBOCYCLIC RING THEREOF AND IN ADDITION TO SAID AMINO RADICAL, A POLAR SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF AN AMINO RADICAL, A HYDROXYL RADICAL AND A HYDROXYALKYL RADICAL.
Claim 3
Dependent Claim
32 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONSISTING OF AN AQUEOUS ALKALINE SOLUTION COMPRISING AT LEAST ONE PHOTOGRAPHIC SILVER HALIDE DEVELOPING AGENT SELECTED FROM THE CLASS CONSISTING OF 3-PYRAZOLIDONES, DIHYDROXYBENZENES AND P-N-METHYLAMINOPHENOL SALTS, AND 1,4-BIS(METHYLAMINO)-CYCLOHEXANE.
Claim 4
Dependent Claim
32 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONSISTING OF AN AQUEOUS ALKALINE SOLUTION COMPRISING AT LEAST ONE PHOTOGRAPHIC SILVER HALIDE DEVELOPING AGENT SELECTED FROM THE CLASS CONSISTING OF 3-PYRAZOLIDONES, DIHYDROXYBENZENES AND P-N-METHYLAMINOPHENOL SALTS, AND 1,4-BIS(METHYLAMINO)-CYCLOHEXANE.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |