US2514650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developing with addition products to improve image quality
Assignee: Eastman Kodak Co
•
Filing: 1947-03-27
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Granted: 1950-07-11
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Expires: 1967-03-27
Abstract
No abstract record available.
Inventors
- 👤 Knott Edward Bowes
- 👤 Morgan John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:52
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/35; G03C1/355; Y; Y10; Y10S; Y10S430/00; Y10S430/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
METHOD OF PRODUCING DEVELOPED PHOTOGRAPHIC IMAGES OF IMPROVED QUALITY FROM A PHOTOGRAPHIC MATERIAL HAVING A SENSITIVE SILVER HALIDE EMULSION LAYER COMPRISING DEVELOPING THE SAID MATERIAL IN THE PRESENCE OF A COMPOUND SELECTED FROM THE GROUP REPRESENTED BY THE FOLLOWING GENERAL FORMULAE:
Claim 2
Dependent Claim
41 words
METHOD OF PRODUCING DEVELOPED PHOTOGRAPHIC IMAGES OF IMPROVED QUALITY FROM A PHOTOGRAPHIC MATERIAL HAVING A SENSITIVE SILVER HALIDE EMULSION LAYER COMPRISING DEVELOPING THE SAID MATERIAL IN THE PRESENCE OF A COMPOUND SELECTED FROM THE GROUP REPRESENTED BY THE FOLLOWING GENERAL FORMULAE:
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |