US3046129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitization of photographic silver halide emulsions containing colorforming compounds with polymeric thioethers
Assignee: Eastman Kodak Co
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Filing: 1958-12-12
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Granted: 1962-07-24
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Expires: 1978-12-12
Abstract
No abstract record available.
Inventors
- 👤 James L Graham
- 👤 Jr John Sagal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
C; C08; C08G; C08G75/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/3056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR INCREASING THE SPEED OF A PHOTOGRAPHIC SILVER HALIDE EMULSION WHEREIN THE VEHICLE FOR THE SILVER HALIDE CONSISTING OF A WATER-PERMEABLE, HYDROPHILIC COLLOID, COMPRISING DEVELOPING AN EXPOSED SILVER HALIDE EMULSION IN A COLOR DEVELOPER CONTAINING A P-PHENYLENEDIAMINE COLOR DEVELOPING AGENT IN THE PRESENCE OF A COLOR COUPLER CAPABLE OF COUPLING WITH THE OXIDATION PRODUCTS OF SAID P-PHENYLENEDIAMINE COLOR DEVELOPING AGENT, AND A LINEAR POLYMER CONSISTING ESSENTIALLY OF POLYMER UNITS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
77 words
A PROCESS FOR INCREASING THE SPEED OF A PHOTOGRAPHIC SILVER HALIDE EMULSION WHEREIN THE VEHICLE FOR THE SILVER HALIDE CONSISTING OF A WATER-PERMEABLE, HYDROPHILIC COLLOID, COMPRISING DEVELOPING AN EXPOSED SILVER HALIDE EMULSION IN A COLOR DEVELOPER CONTAINING A P-PHENYLENEDIAMINE COLOR DEVELOPING AGENT IN THE PRESENCE OF A COLOR COUPLER CAPABLE OF COUPLING WITH THE OXIDATION PRODUCTS OF SAID P-PHENYLENEDIAMINE COLOR DEVELOPING AGENT, AND A LINEAR POLYMER CONSISTING ESSENTIALLY OF POLYMER UNITS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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US3021215A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |