US3332776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fog reduction in photographic silver halide emulsions
Assignee: GAF Chemicals Corp
•
Filing: 1963-11-29
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Granted: 1967-07-25
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Clark
- 👤 Dersch Fritz
- 👤 Sally L Paniccia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:18
CPC Classifications
G; G05; G05G; G05G7/00; G05G7/02; G05G7/04; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A PROCESS OF MINIMIZING AND PREVENTING FOG IN LIGHT-SENSITIVE SILVER HALIDE MATERIALS COMPRISING A BASE HAVING A LIGHT-SENSITIVE SILVER HALIDE EMULSION THEREON, WHICH COMPRISES EXPOSING SAID EMULSION TO LIGHT AND DEVELOPING THE SAME IN THE PRESENCE OF AN ANTIFOGGANT CHARACTERIZED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
44 words
A PROCESS OF MINIMIZING AND PREVENTING FOG IN LIGHT-SENSITIVE SILVER HALIDE MATERIALS COMPRISING A BASE HAVING A LIGHT-SENSITIVE SILVER HALIDE EMULSION THEREON, WHICH COMPRISES EXPOSING SAID EMULSION TO LIGHT AND DEVELOPING THE SAME IN THE PRESENCE OF AN ANTIFOGGANT CHARACTERIZED BY THE GENERAL FORMULA:
Claim 3
Dependent Claim
15 words
A PHOTOGRAPHIC DEVELOPER CONTAINING A DEVELOPING AGENT AND AN ANTIFOGGANT CHARACTERIZED BY THE GENERAL FORMULA:
Claim 4
Dependent Claim
15 words
A PHOTOGRAPHIC DEVELOPER CONTAINING A DEVELOPING AGENT AND AN ANTIFOGGANT CHARACTERIZED BY THE GENERAL FORMULA:
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |