US3062647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing colloidal material and alkylene oxide polymers
Assignee: Eastman Kodak Co
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Filing: 1960-04-18
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Granted: 1962-11-06
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Expires: 1980-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Herz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043; G03C1/06; G03C1/08; G03C1/09; G03C5/00; G03C5/26; G03C5/29; G03C5/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF PRODUCING A PHOTOGRAPHIC IMAGE COMPRISING (A) EXPOSING A LIGHT-SENSITIVE SILVER HALIDE EMULSION HAVING UNIFORMLY DISPERSED THEREIN AT LEAST ONE COLLOIDAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF COLLOIDAL NOBLE METALS, SILVER SULFIDE AND ZINC SULFIDE AND CONTAINING AN ETHYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYETHYLENE GLYCOLS, AND (2) CONDENSATION PRODUCTS OF ETHYLENE OXIDE WITH ORGANIC COMPOUNDS CONTAINING AN ACTIVE HYDROGEN ATOM, SAID ETHYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 300; AND (B) DEVELOPING SAID EXPOSED EMULSION IN A PHOTOGRAPHIC DEVELOPER CONTAINING IODIDE, SAID IODIDE BEING ADDED TO SAID DEVELOPER AS A SOLUBLE IODIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SODIUM, AND LITHIUM.
Claim 2
Independent Claim
113 words
A METHOD OF PRODUCING A PHOTOGRAPHIC IMAGE COMPRISING (A) EXPOSING A LIGHT-SENSITIVE SILVER HALIDE EMULSION HAVING UNIFORMLY DISPERSED THEREIN AT LEAST ONE COLLOIDAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF COLLOIDAL NOBLE METALS, SILVER SULFIDE AND ZINC SULFIDE AND CONTAINING AN ETHYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYETHYLENE GLYCOLS, AND (2) CONDENSATION PRODUCTS OF ETHYLENE OXIDE WITH ORGANIC COMPOUNDS CONTAINING AN ACTIVE HYDROGEN ATOM, SAID ETHYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 300; AND (B) DEVELOPING SAID EXPOSED EMULSION IN A PHOTOGRAPHIC DEVELOPER CONTAINING IODIDE, SAID IODIDE BEING ADDED TO SAID DEVELOPER AS A SOLUBLE IODIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SODIUM, AND LITHIUM.
References Cited (Backward Citations)
US2707681A
Cited
US2848330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |