US3761260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic bleach composition
Assignee: Agfa Gevaert NV
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Filing: 1971-08-09
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Granted: 1973-09-25
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Expires: 1991-08-09
Abstract
Abstract A METHOD OF BLEACHING PHOTOGRAPHIC SILVER IMAGES BY MEANS OF A SOLUTION CONTAINING AN ALIALI METAL OR AMMONIUM DICHROMATE AND A WATER-SOLUBLE IODIDE IN A WEIGHT RATIO OF 50:1 AND 1:1, IS DESCRIBED. BY THE PRESENCE OF THE IODIDE, BLEACHING IS ACCELERATED.
Inventors
- 👤 Ramaix M De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/40; G03C5/44
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |