US2571698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic masking process
Assignee: Eastman Kodak Co
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Filing: 1948-06-02
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Granted: 1951-10-16
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Expires: 1968-06-02
Abstract
No abstract record available.
Inventors
- 👤 Scheuring S Fierke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:02
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF FORMING A MASKING IMAGE IN A MULTILAYER COLOR FILM HAVING THREE SUPERPOSED SILVER HALIDE EMULSION LAYERS SENSITIZED RESPECTIVELY TO THE RED, GREEN AND BLUE REGIONS OF THE VISIBLE SPECTRUM AND CONTAINING COUPLER COMPOUNDS FOR COLOR-DEVELOPING IN SAID EMULSION LAYERS DYE IMAGES OF COLORS COMPLEMENTARY TO THE SENSITIVITIES OF SAID EMULSION LAYERS, THE PRINCIAL HALIDE CONSTITUENT OF SAID LAYERS BEING A HALIDE OTHER THAN SILVER IODINE, THE BLUE-SENSITIVE LAYER BEING OUTERMOST, AND A SILVER IODINE EMULSION LAYER BETWEEN ANY TWO OF SAID EMUSLION LAYERS, WHICH COMPRISES EXPOSING SAID FILM TO A COLORED SUBJECT, DEVELOPING SILVER AND SUBTRACTIVELY COLORED DYE IMAGES IN SAID RED, GREEN AND BLUE-SENAROMATIC AMINO DEVELOPING AGENT, REMOVING SAID SILVER IMAGES AND RESIDUAL SILVER HALIDE FROM SAID THREE EMULSION LAYERS, EXPOSING SAID MASKING EMULSION LAYERS, EXPOSING SAID MASKING EMULSION LAYER THROUGH A DYE IMAGE OTHER THAN THE YELLOW DYE IMAGE IN SAID FILM, DEVELOPING A MASKING IMAGE IN SAID EXPOSED MASKING EMULSION LAYER AND RECOVERING THE RESIDUAL SILVER HALIDE FROM SAID FILM.
Claim 2
Independent Claim
166 words
THE METHOD OF FORMING A MASKING IMAGE IN A MULTILAYER COLOR FILM HAVING THREE SUPERPOSED SILVER HALIDE EMULSION LAYERS SENSITIZED RESPECTIVELY TO THE RED, GREEN AND BLUE REGIONS OF THE VISIBLE SPECTRUM AND CONTAINING COUPLER COMPOUNDS FOR COLOR-DEVELOPING IN SAID EMULSION LAYERS DYE IMAGES OF COLORS COMPLEMENTARY TO THE SENSITIVITIES OF SAID EMULSION LAYERS, THE PRINCIAL HALIDE CONSTITUENT OF SAID LAYERS BEING A HALIDE OTHER THAN SILVER IODINE, THE BLUE-SENSITIVE LAYER BEING OUTERMOST, AND A SILVER IODINE EMULSION LAYER BETWEEN ANY TWO OF SAID EMUSLION LAYERS, WHICH COMPRISES EXPOSING SAID FILM TO A COLORED SUBJECT, DEVELOPING SILVER AND SUBTRACTIVELY COLORED DYE IMAGES IN SAID RED, GREEN AND BLUE-SENAROMATIC AMINO DEVELOPING AGENT, REMOVING SAID SILVER IMAGES AND RESIDUAL SILVER HALIDE FROM SAID THREE EMULSION LAYERS, EXPOSING SAID MASKING EMULSION LAYERS, EXPOSING SAID MASKING EMULSION LAYER THROUGH A DYE IMAGE OTHER THAN THE YELLOW DYE IMAGE IN SAID FILM, DEVELOPING A MASKING IMAGE IN SAID EXPOSED MASKING EMULSION LAYER AND RECOVERING THE RESIDUAL SILVER HALIDE FROM SAID FILM.
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) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |