US3392019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous silver halide photographid monobath solutions
Assignee: Eastman Kodak Co
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Filing: 1966-10-31
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Granted: 1968-07-09
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 John C Barnes
- 👤 Gerald J Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:30
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/58; G03C5/26; G03C5/38; G03C5/383; Y; Y10; Y10S; Y10S430/00; Y10S430/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A MONOBATH COMPOSITION FOR SIMULTANEOUSLY DEVELOPING AND FIXING AN EXPOSED PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER COMPRISING AN AQUEOUS ALKALINE SOLUTION CONTAINING: (A) A PHOTOGRAPHIC DEVELOPING AGENT FOR REDUCING EXPOSED SILVER SHALIDE TO METALLIC SILVER, (B) A WATER-SOLUBLE THIOSULFATE COMPOUND IN SUFFICIENT QUANTITY TO STABILIZE SUBSTANTIALLY ALL UNEXPOSED SILVER HALIDE, (C) PHYSICAL DEVELOPMENT NUCLEI, (D) SUFFICIENT THICKENING AGENT SO THAT THE VISCOSITY OF THE MONOBATH IS FROM ABOUT 5/ TO ABOUT 20,000 CENTIPOSES AT 24*C., AND (E) AN AMINE COMPOUND WHICH IS EITHER MORPHOLINE, A HYDROXYALKYL AMINE CONTAINING A SINGLE HYDROXYL GROUP AND WHEREIN THE HYDROXYALKYL GROUP HAS 1-5 CARBON ATOMS, A SULFUR DIOXIDE ADDITION PRODUCT OF MORPHOLINE OR A SULFUR DIOXIDE ADDITION PRODUCT OF SAID HYDROXYALKYL AMINE.
Claim 2
Dependent Claim
117 words
A MONOBATH COMPOSITION FOR SIMULTANEOUSLY DEVELOPING AND FIXING AN EXPOSED PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER COMPRISING AN AQUEOUS ALKALINE SOLUTION CONTAINING: (A) A PHOTOGRAPHIC DEVELOPING AGENT FOR REDUCING EXPOSED SILVER SHALIDE TO METALLIC SILVER, (B) A WATER-SOLUBLE THIOSULFATE COMPOUND IN SUFFICIENT QUANTITY TO STABILIZE SUBSTANTIALLY ALL UNEXPOSED SILVER HALIDE, (C) PHYSICAL DEVELOPMENT NUCLEI, (D) SUFFICIENT THICKENING AGENT SO THAT THE VISCOSITY OF THE MONOBATH IS FROM ABOUT 5/ TO ABOUT 20,000 CENTIPOSES AT 24*C., AND (E) AN AMINE COMPOUND WHICH IS EITHER MORPHOLINE, A HYDROXYALKYL AMINE CONTAINING A SINGLE HYDROXYL GROUP AND WHEREIN THE HYDROXYALKYL GROUP HAS 1-5 CARBON ATOMS, A SULFUR DIOXIDE ADDITION PRODUCT OF MORPHOLINE OR A SULFUR DIOXIDE ADDITION PRODUCT OF SAID HYDROXYALKYL AMINE.
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |