US2852383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of photographic packet emulsions by a water-in-oil system
Assignee: Eastman Kodak Co
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Filing: 1955-09-01
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Granted: 1958-09-16
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Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 William O Kenyon
- 👤 Louis M Minsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:30
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/327; G03C7/3275; G03C7/388; G03C7/3882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF MAKING A PACKET PHOTOGRAPHIC EMULSION WHICH COMPRISES MIXING WITH A GELATINO-SILVER HALIDE EMULSION A WATER-SOLUBLE SALT OF A WATER-SOLUBLE COUPLER CAPABLE OF REACTING WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT TO FORM A DYE AND NON-DIFFUSING IN PHOTOGRAPHIC GELATIN LAYERS, TO FORM A SOLUTION OF SAID COUPLER IN SAID EMULSION, MIXING SAID EMULSION WITH A VISCOUS HYDROCARBON OIL AND FORMING A DISPERSION OF SAID EMULSION IN SAID OIL, ADDING A GELATIN HARDENING AGENT TO SAID DISPERSION TO HARDEN THE DISPERSED EMULSION PARTICLES, REMOVING THE DISPERSED PARTICLES FROM SAID OIL AND REDISPERSING THEM IN GELATIN TO FORM A DISPERSION OF PARTICLES
Claim 2
Independent Claim
110 words
THE METHOD OF MAKING A PACKET PHOTOGRAPHIC EMULSION WHICH COMPRISES MIXING WITH A GELATINO-SILVER HALIDE EMULSION A WATER-SOLUBLE SALT OF A WATER-SOLUBLE COUPLER CAPABLE OF REACTING WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT TO FORM A DYE AND NON-DIFFUSING IN PHOTOGRAPHIC GELATIN LAYERS, TO FORM A SOLUTION OF SAID COUPLER IN SAID EMULSION, MIXING SAID EMULSION WITH A VISCOUS HYDROCARBON OIL AND FORMING A DISPERSION OF SAID EMULSION IN SAID OIL, ADDING A GELATIN HARDENING AGENT TO SAID DISPERSION TO HARDEN THE DISPERSED EMULSION PARTICLES, REMOVING THE DISPERSED PARTICLES FROM SAID OIL AND REDISPERSING THEM IN GELATIN TO FORM A DISPERSION OF PARTICLES
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |