US3051570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifoggants and stabilizers for photographic silver halide emulsions
Assignee: GAF Chemicals Corp
•
Filing: 1958-10-01
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Granted: 1962-08-28
•
Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Dersch Fritz
- 👤 Frank J Kaszuba
- 👤 Emil B Rauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:26
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/08; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
29 words
A PHOTOGRAPHIC MATERIAL COMPRISING A BASE AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION CARRIED THEREBY, SAID PHOTOGRAPHIC MATERIAL CONTAINING, IN FOG INHIBITING AMOUNT, A MERCAPTO-1,2,4-THIADIAZOLE OF THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
A PHOTOGRAPHIC MATERIAL COMPRISING A BASE AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION CARRIED THEREBY, SAID PHOTOGRAPHIC MATERIAL CONTAINING, IN FOG INHIBITING AMOUNT, A MERCAPTO-1,2,4-THIADIAZOLE OF THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
22 words
THE PRODUCT AS DEFINED IN CLAIM 1 WHEREIN SAID MERCAPTO-1,2,4-THIADIAZOLE IS LOCATED IN A LAYER ADJACENT TO SAID SILVER HALIDE EMULSION LAYER.
References Cited (Backward Citations)
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Cited
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US2453346A
Cited
US2824001A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |