US3291609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer incorporated photographic materials
Assignee: Eastman Kodak Co
•
Filing: 1964-06-05
•
Granted: 1966-12-13
•
Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Porter Ralph Frederick
- 👤 Gompf Thomas Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/42; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHOTOGRAPHIC ELEMENT A WATER-PEREABLE HYDROPHILIC COLLOID CONTAINING A SILVER HALIDE DEVEOPMENT PRECURSOR REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
35 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER, AND INTEGRAL WITH SAID PHOTOGRAPHIC ELEMENT A WATER-PEREABLE HYDROPHILIC COLLOID CONTAINING A SILVER HALIDE DEVEOPMENT PRECURSOR REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |