Patent US2899305A successfully refreshed from Google Patents.
US2899305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colour photography
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:33
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03C7/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR THE PRODUCTION OF A YELLOW DYESTUFF IMAGE IN A PHOTOGRAPHIC LAYER WHICH COMPRISES FORMING A LATENT IMAGE IN A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION LAYER CONTAINING A YELLOW DYESTUFF SELECTED FROM THE CLASS CONSISTING OF DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
42 words
A PROCESS FOR THE PRODUCTION OF A YELLOW DYESTUFF IMAGE IN A PHOTOGRAPHIC LAYER WHICH COMPRISES FORMING A LATENT IMAGE IN A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION LAYER CONTAINING A YELLOW DYESTUFF SELECTED FROM THE CLASS CONSISTING OF DYESTUFFS 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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |