US3011890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions
Assignee: Eastman Kodak Co
•
Filing: 1958-07-21
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Granted: 1961-12-05
•
Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Gates
- 👤 Paul E Miller
- 👤 James E Koller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PHOTOSENSITIVE SILVER HALIDE EMULSION COMPRISING SILVER HALIDE CARRIED BY A PROTECTIVE COLLOID ESSENTIALLY CONSISTING OF PROTEIN MATERIAL. 10-50% OF WHICH IS PHOTOGRAPHICALLY INERT CARBOXYMETHYLATED PROTEIN SUBSTANTIALLY THE REMAINDER OF THE PROTEIN MATERIAL BEING GELATIN.
Claim 2
Dependent Claim
35 words
A PHOTOSENSITIVE SILVER HALIDE EMULSION COMPRISING SILVER HALIDE CARRIED BY A PROTECTIVE COLLOID ESSENTIALLY CONSISTING OF PROTEIN MATERIAL. 10-50% OF WHICH IS PHOTOGRAPHICALLY INERT CARBOXYMETHYLATED PROTEIN SUBSTANTIALLY THE REMAINDER OF THE PROTEIN MATERIAL BEING GELATIN.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |