Patent US2979405A successfully refreshed from Google Patents.
US2979405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic element containing a 1-hydroxy-2-naphthoic acid anilidecolor coupler
Assignee: Gevaert Photo Producten NV
•
Filing: 1957-06-19
•
Granted: 1961-04-11
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Cat Arthur Henri De
- 👤 Tavernier Bernard Hippoliet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:41
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SILVER HALIDE EMULSION LAYER AND THE COMPOUND OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
16 words
LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SILVER HALIDE EMULSION LAYER AND THE COMPOUND OF THE FOLLOWING 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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |