US3193386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide emulsions and elements containing antifoggants
Assignee: EIDP Inc
•
Filing: 1961-11-29
•
Granted: 1965-07-06
•
Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Clayton F A White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/36; G03C1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A COLLOID-SILVER HALIDE EMULSION PREDOMINATING IN SILVER CHLORIDE AND CONTAINING A MIXTURE OF ABOUT 0.15 TO ABOUT 2.50 GRAMS OF UNSUBSTITUTED 8-HYDROXYQUINOLINE AND ABOUT 0.40 TO ABOUT 2.40 GRAMS OF 8-HYDROXYQUINOLINE-5SULFONIC ACID PER MOLE OF SILVER HALIDE.
Claim 2
Dependent Claim
37 words
A COLLOID-SILVER HALIDE EMULSION PREDOMINATING IN SILVER CHLORIDE AND CONTAINING A MIXTURE OF ABOUT 0.15 TO ABOUT 2.50 GRAMS OF UNSUBSTITUTED 8-HYDROXYQUINOLINE AND ABOUT 0.40 TO ABOUT 2.40 GRAMS OF 8-HYDROXYQUINOLINE-5SULFONIC ACID PER MOLE OF SILVER HALIDE.
References Cited (Backward Citations)
US2691588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |