US3591380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid stabilizing process for color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1968-07-22
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Granted: 1971-07-06
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Expires: 1988-07-22
Abstract
Abstract A METHOD FOR RAPIDLY DEVELOPING AN EXPOSED PHOTOGRAPHIC MATERIAL CONTAINING DIFFERENTLY SENSITIZED GELATINOSILVER HALIDE EMULSIONS AND COLOR FORMERS CAPABLE OF REACTING WITH THE OXIDATION PRODUCTS OF A PRIMARY AMINE WHEREBY SAID MATERIAL IS PLACED INTO A DEVELOPING BATH CONTAINING A PRIMARY AROMATIC AMINE, THE DEVELOPING PROCESS IS STOPPED IN A STOP BATH AND THE PRODUCT IS BLEACHSTABILIZED IN A BATH CONTAINING AN ANION OF AN IRON (III) MONOHYDROGEN ETHYL-DIAMINE-N,N,N'',N'',-TETRAACETATE AND AMMONIUM THIOSULFATE AND THEREAFTER DRYING SAID MATERIAL.
Inventors
- 👤 Kinji Ohkubo
- 👤 Katsumi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:23
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |