US3227552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of photographic direct positive color images
Assignee: Eastman Kodak Co
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Filing: 1964-08-27
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Granted: 1966-01-04
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Keith E Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G01; G01C; G01C19/00; G01C19/02; G01C19/40; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3014; G03C7/00; G03C7/30; G03C7/3022; G03C8/10; G03C8/12; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
A COLOR PHOTOGRAPHIC DIFFUSION TRANSFER PROCESS WHICH COMPRISES EXPOSING A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING SUPERPOSED THEREON RED, GREEN AND BLUE LIGHT-SENSITIVE DIRECT POSITIVE SILVER HALIDE EMULSION LAYERS WHEREIN THE SILVER HALIDE FORMS LATENT IMAGES PREDOMINANTLY INSIDE THE SILVER HALIDE GRAINS, INTEGRAL WITH SAID ELEMENT AND CONTIGUOUS TO SAID EMULSION LAYERS, RESPECTIVELY, A CYAN DYE-FORMING COUPLER, A MAGENTA DYE-FORMING COUPLER AND A YELLOW DYE-FORMING COUPLER, SAID COUPLERS BEING NONDIFFUSIBLE DURING DEVELOPMENT IN AN ALKALINE COLOR DEVELOPING COMPOSITION CONTAINING AN AROMATIC PRIMARY AMINO COLOR DEVELOPING AGENT, CAPABLE OF FORMING DIFFUSIBLE ACID DYES IN SAID ALKALINE COLOR DEVELOPING SOLUTION BY REACTION WITH OXIDATION PRODUCT OF SAID COLOR DEVELOPING AGENT AND HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |