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US3148058A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for color image formation

Assignee: Polaroid Corp
•
Filing: 1960-10-17
•
Granted: 1964-09-08
•
Expires: 1980-10-17
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Abstract

No abstract record available.

Inventors

  • 👤 Edwin H Land
  • 👤 William H Ryan
  • 👤 Battaglia Glenn

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 13:38
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/26

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 215 words
A PROCESS FOR PRODUCING A COMPOSITE PHOTOGRAPHIC PRINT BEARING AN IMAGE WHICH EXHIBITS SUBSTANTIALLY THE ENTIRE SPECTRAL COLOR RANGE OF A MULTICOLORED PHOTOGRAPHIC SUBJECT, COMPRISING THE STEPS OF EXPOSING A GELATINO SILVER HALIDE EMULSION TO SAID SUBJECT WITHOUT A COLOR-SEPARATIO FILTER, EXPOSING TO SAID SUBJECT THROUGH A RED FILTER A GELATINO SILVER HALIDE EMULSION WHICH IS SIMILAR TO SAID FIRSTNAMED EMULSION, PROCESSING SAID EMULSIONS TO PROVIDE, RESPECTIVELY, THEREFROM A FIRST AND SECOND NEGATIVE, EXPOSING INDIVIDUALLY THROUGH SAID NEGATIVES A GELATINO SILVER HALIDE EMULSION WHICH IS SIMILAR TO SAID PREVIOUSLYNAMED EMULSIONS AND PROCESSING SAID EMULSION TO PROVIDE THEREFROM, RESPECTIVELY, A FIRST AND SECOND BLACK-ANDWHITE POSITIVE, SUPERIMPOSING AND HOLDING IN REGISTERED RELATION SAID FIRST NEGATIVE AND SAID SECOND POSITIVE TO FORM A COMPOSITE ASSEMBLY, EXPOSING TO WHITE LIGHT THROUGH SAID COMPOSITE ASSEMBLY A GELATINO SILVER HALIDE MATRIX FILM DEVELOPING, FIXING, BLEACHING AND AGAIN FIXING SAID EXPOSED MATRIX FILM TO DIVEST IT OF SILVER AND RENDER IT ADAPTED TO TAKE UP A DYE, IMBIBING A RED DYE INTO SAID MATRIX FILM TO PROVIDE A RED-DYED IMAGE THERIN, SUPERIMPOSING IN REGISTERED RELATION SAID RED-DYED IMAGE OF THE MATRIX FILM AND SAID FIRST BLACK-AND-WHITE POSITIVE TO FORM SAID COMPOSITE PHOTOGRAPHIC PRINT, AND DIRECTING WHITE LIGHT ONTO SAID PRINT TO RENDER VISIBLE THEREIN SAID IMAGE EXHIBITING SAID ENTIRE SPECTRAL COLOR RANGE.
Claim 2
Dependent Claim 215 words
A PROCESS FOR PRODUCING A COMPOSITE PHOTOGRAPHIC PRINT BEARING AN IMAGE WHICH EXHIBITS SUBSTANTIALLY THE ENTIRE SPECTRAL COLOR RANGE OF A MULTICOLORED PHOTOGRAPHIC SUBJECT, COMPRISING THE STEPS OF EXPOSING A GELATINO SILVER HALIDE EMULSION TO SAID SUBJECT WITHOUT A COLOR-SEPARATIO FILTER, EXPOSING TO SAID SUBJECT THROUGH A RED FILTER A GELATINO SILVER HALIDE EMULSION WHICH IS SIMILAR TO SAID FIRSTNAMED EMULSION, PROCESSING SAID EMULSIONS TO PROVIDE, RESPECTIVELY, THEREFROM A FIRST AND SECOND NEGATIVE, EXPOSING INDIVIDUALLY THROUGH SAID NEGATIVES A GELATINO SILVER HALIDE EMULSION WHICH IS SIMILAR TO SAID PREVIOUSLYNAMED EMULSIONS AND PROCESSING SAID EMULSION TO PROVIDE THEREFROM, RESPECTIVELY, A FIRST AND SECOND BLACK-ANDWHITE POSITIVE, SUPERIMPOSING AND HOLDING IN REGISTERED RELATION SAID FIRST NEGATIVE AND SAID SECOND POSITIVE TO FORM A COMPOSITE ASSEMBLY, EXPOSING TO WHITE LIGHT THROUGH SAID COMPOSITE ASSEMBLY A GELATINO SILVER HALIDE MATRIX FILM DEVELOPING, FIXING, BLEACHING AND AGAIN FIXING SAID EXPOSED MATRIX FILM TO DIVEST IT OF SILVER AND RENDER IT ADAPTED TO TAKE UP A DYE, IMBIBING A RED DYE INTO SAID MATRIX FILM TO PROVIDE A RED-DYED IMAGE THERIN, SUPERIMPOSING IN REGISTERED RELATION SAID RED-DYED IMAGE OF THE MATRIX FILM AND SAID FIRST BLACK-AND-WHITE POSITIVE TO FORM SAID COMPOSITE PHOTOGRAPHIC PRINT, AND DIRECTING WHITE LIGHT ONTO SAID PRINT TO RENDER VISIBLE THEREIN SAID IMAGE EXHIBITING SAID ENTIRE SPECTRAL COLOR RANGE.

References Cited (Backward Citations)

US1461356A Cited
US1505787A Cited
US1585388A Cited
US1787201A Cited
GB506581A Cited
US3034890A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-09-08 1968-03-09 1968-09-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-09-08 1972-03-09 1972-09-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-09-08 1976-03-09 1976-09-08 $7700.00 Window Closed / Lapsed

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