US3135609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-hydroxy-2-naphthamide couplers for color photography
Assignee: GAF Chemicals Corp
•
Filing: 1960-06-29
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Granted: 1964-06-02
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 Guenther H Klinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:25
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A COUPLER SELECTED FROM THE CLASS REPRESENTED BY THOSE OF THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
21 words
A LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A COUPLER SELECTED FROM THE CLASS REPRESENTED BY THOSE OF THE FOLLOWING FORMULAE:
References Cited (Backward Citations)
US2694718A
Cited
US2710803A
Cited
FR1146556A
Cited
US2848326A
Cited
US2829975A
Cited
US3080233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |