Patent US3178285A successfully refreshed from Google Patents.
US3178285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic layers for the silver dyestuff bleaching process
Assignee: BASF Schweiz AG
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Filing: 1961-03-08
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Granted: 1965-04-13
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Expires: 1981-03-08
Abstract
No abstract record available.
Inventors
- 👤 Anderau Walter
- 👤 Koller Eugen Johann
- 👤 Mory Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:25
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PHOTOGRAPHIC MATERIAL SUITABLEFOR THE SILVER DYESTUFF BLEACHING PROCESS AND CONTAINING ON A SUPPORT (A) A SILVER HALIDE LAYER SENSITIZED TO THE RED SPECTRAL RANGE AND CONTAINING A BLUE TO BLUISH GREEN DYESTUFF, (B) A SILVER HALIDE LAYER SENSITIZED TO THE GREEN RANGE AND CONTAINING A MAGENTA DYESTUFF, AND (C) A SILVER HALIDE LAYER CONTAINING A YELLOW DYESTUFF, WHEREIN THE LAYER (A) IS COLORED WITH A WATER-SOLUBLE PHTHALOCYANINE.
Claim 2
Dependent Claim
68 words
A PHOTOGRAPHIC MATERIAL SUITABLEFOR THE SILVER DYESTUFF BLEACHING PROCESS AND CONTAINING ON A SUPPORT (A) A SILVER HALIDE LAYER SENSITIZED TO THE RED SPECTRAL RANGE AND CONTAINING A BLUE TO BLUISH GREEN DYESTUFF, (B) A SILVER HALIDE LAYER SENSITIZED TO THE GREEN RANGE AND CONTAINING A MAGENTA DYESTUFF, AND (C) A SILVER HALIDE LAYER CONTAINING A YELLOW DYESTUFF, WHEREIN THE LAYER (A) IS COLORED WITH A WATER-SOLUBLE PHTHALOCYANINE.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |