US3114634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colour photography
Assignee: Ilford Imaging UK Ltd
•
Filing: 1961-10-24
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Granted: 1963-12-17
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Expires: 1981-10-24
Abstract
No abstract record available.
Inventors
- 👤 Brown John Bernard
- 👤 Stammers Douglas William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:36
CPC Classifications
C; C09; C09B; C09B33/00; C09B33/02; C09B33/12; G; G03; G03C; G03C7/00; G03C7/28; G03C7/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR THE PRODUCTION OF A YELLOW DYESTUFF IMAGE IN A PHOTOGRAPHIC ELEMENT WHICH COMPRISES FORMING A LATENT SILVER IMAGE IN A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION LAYER OF SAID ELEMENT, WHICH LAYER HAS IN COACTIVE RELATION THERETO A YELLOW DYESTUFF OF THE FORMULA:
Claim 2
Dependent Claim
45 words
A PROCESS FOR THE PRODUCTION OF A YELLOW DYESTUFF IMAGE IN A PHOTOGRAPHIC ELEMENT WHICH COMPRISES FORMING A LATENT SILVER IMAGE IN A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION LAYER OF SAID ELEMENT, WHICH LAYER HAS IN COACTIVE RELATION THERETO A YELLOW DYESTUFF OF THE 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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |