US3573914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developer composition containing carbonyl bisulfite amine condensation product and free amine
Assignee: Eastman Kodak Co
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Filing: 1967-08-18
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Granted: 1971-04-06
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Expires: 1987-08-18
Abstract
Abstract PHOTOGRAPHIC DEVELOPER COMPOSITION FOR HIGH-CONTRAST ELEMENTS COMPRISING A DEVELOPING AGENT, A CARBONYL BISULFITEAMINE CONDENSATION PRODUCT AND FREE AMINE. A CONTINUOUS PROCESS FOR USING THE DEVELOPER COMPOSITION IN A CONTINUOUS TRANSPORT PROCESSING MACHINE IS ALSO DESCRIBED.
Inventors
- 👤 Thomas J Masseth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:41
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |