Patent US3582347A successfully refreshed from Google Patents.
US3582347A
Expired / Lapsed
US
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Processing multilayer photographic color films
Assignee: Eastman Kodak Co
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Filing: 1968-07-05
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Granted: 1971-06-01
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Expires: 1988-07-05
Abstract
Abstract A PROCESS FOR DEVELOPMENT OF MULTILAYER PHOTOGRAPHIC COLOR PRODUCTS INVOLVES PROGRESSIVELY HARDENING THE LAYERS WITH AN ALDEHYDIC PREHARDENING SOLUTION, AND AFTER DEVELOPMENT, IN AN ACIDIC ZIRCONIUM SALT SOLUTION. THE PROCESS REDUCES DAMAGE TO THE PRODUCT IN CONTINUOUS PROCESSING MACHINES.
Inventors
- 👤 Fred R Holly Jr
- 👤 N Bruce Williams
- 👤 Gareth N Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:55
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132; G03C; G03C7/00; G03C7/30; G03C7/3046; G03D11/00
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |