Patent US3005709A successfully refreshed from Google Patents.
US3005709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic couplers containing acylamino groups
Assignee: GAF Chemicals Corp
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Filing: 1958-01-13
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Granted: 1961-10-24
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Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Robert F Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:51
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A SILVER-HALIDE EMULSION CONTAINING A COUPLER COMPOUND OF THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
A SILVER-HALIDE EMULSION CONTAINING A COUPLER COMPOUND OF THE FOLLOWING 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) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |