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US2578333A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic color correction process

Assignee: Eastman Kodak Co
•
Filing: 1949-06-28
•
Granted: 1951-12-11
•
Expires: 1969-06-28
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Abstract

No abstract record available.

Inventors

  • 👤 John A C Yule

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 21:10
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/18

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 209 words
THE METHOF OF MAKING A COLOR CORRECTED PHOTOGRAPH WHICH COMPRISES EXPOSING TO A COLORED SUBJECT AN ORGANIC COLOR FILM HAVING SILVER HALIDE EMULSIONS SENSITIZED TO THE PRIMARY REGIONS OF THE VISIBLE SPECTRUM, AT LEAST ONE OF SAID EMULSIONS BUT NO MORE THAN TWO CONTAINING A COUPLER COMPOUND CAPABLE OF REACTING WITH A COLOR DEVELOPING AGENT TO FORM DYE IAMGES OF COLOR COMPLEMENTARY TO THE SENSITIVITY OF SAID EMULSION, THE REMAINING EMULSIONS BEING FREE OF COUPLER, DEVELOPING THE SO-EXPOSED PORTIONS TO SILVER AND SUBSTRACTIVELY COLORED NEGATIVE DYE IMAGES IN SAID EMULSIONS CONTAINING COLOR FORMER AND TO ONLY NEGATIVE SILVER IMAGES IN THE REMAINING EMULSION BY MEANS OF A COLOR DEVELOPING COMPOSITION FREE OF COUPLER COMPOUND, RE-EXPOSING THE RESIDUAL SILVER HALIDE OF SAID REMAINING EMUL SION AND COLOR DEVELOPING THE SO-ESPOSED SILVER HALIDE THEREIN TO A POSITIVE DYE IMAGE OF COLOR COMPLEMENTARY TO THE EMULSION SENSITIVITY, EXPOSING TO THE RESULTANT NEGATIVE AND POSITIVE DYE IMAGES A SECOND COLOR FILM OF SUBSTANTIALLY THE SAME COMPOSITION AS SAID ORIGINAL COLOR FILM, DEVELOPING THEREIN THREE DIFFERENT SUBSTRACTIVELY COLORED DYE IMAGES OF WHICH THOSE CORRESPONDING TO SAID NEGATIVE DYE IMAGES ARE NEGATIVE THERETO AND POSITIVE TO THE ORIGINAL SUBJECT AND THOSE CORRESPONDING TO SAID FIRST-MENTIONED POSITIVE IMAGES ARE POSITIVE THERETO AND TO SAID ORIGINAL SUBJECT.
Claim 2
Dependent Claim 209 words
THE METHOF OF MAKING A COLOR CORRECTED PHOTOGRAPH WHICH COMPRISES EXPOSING TO A COLORED SUBJECT AN ORGANIC COLOR FILM HAVING SILVER HALIDE EMULSIONS SENSITIZED TO THE PRIMARY REGIONS OF THE VISIBLE SPECTRUM, AT LEAST ONE OF SAID EMULSIONS BUT NO MORE THAN TWO CONTAINING A COUPLER COMPOUND CAPABLE OF REACTING WITH A COLOR DEVELOPING AGENT TO FORM DYE IAMGES OF COLOR COMPLEMENTARY TO THE SENSITIVITY OF SAID EMULSION, THE REMAINING EMULSIONS BEING FREE OF COUPLER, DEVELOPING THE SO-EXPOSED PORTIONS TO SILVER AND SUBSTRACTIVELY COLORED NEGATIVE DYE IMAGES IN SAID EMULSIONS CONTAINING COLOR FORMER AND TO ONLY NEGATIVE SILVER IMAGES IN THE REMAINING EMULSION BY MEANS OF A COLOR DEVELOPING COMPOSITION FREE OF COUPLER COMPOUND, RE-EXPOSING THE RESIDUAL SILVER HALIDE OF SAID REMAINING EMUL SION AND COLOR DEVELOPING THE SO-ESPOSED SILVER HALIDE THEREIN TO A POSITIVE DYE IMAGE OF COLOR COMPLEMENTARY TO THE EMULSION SENSITIVITY, EXPOSING TO THE RESULTANT NEGATIVE AND POSITIVE DYE IMAGES A SECOND COLOR FILM OF SUBSTANTIALLY THE SAME COMPOSITION AS SAID ORIGINAL COLOR FILM, DEVELOPING THEREIN THREE DIFFERENT SUBSTRACTIVELY COLORED DYE IMAGES OF WHICH THOSE CORRESPONDING TO SAID NEGATIVE DYE IMAGES ARE NEGATIVE THERETO AND POSITIVE TO THE ORIGINAL SUBJECT AND THOSE CORRESPONDING TO SAID FIRST-MENTIONED POSITIVE IMAGES ARE POSITIVE THERETO AND TO SAID ORIGINAL SUBJECT.

References Cited (Backward Citations)

US2193931A Cited
US2357388A Cited
US2449966A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-12-10 1955-06-11 1955-12-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-12-10 1959-06-11 1959-12-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-12-10 1963-06-11 1963-12-11 $7700.00 Window Closed / Lapsed

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