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US3843369A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-layer color photographic light-sensitive materials

Assignee: Fujifilm Holdings Corp
•
Filing: 1972-06-02
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Granted: 1974-10-22
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Expires: 1992-06-02
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Abstract

Abstract 1. IN A GELATINO-SILVER HALIDE COLOR PHOTOGRAPHIC MULTILAYER LIGHT-SENSITIVE MATERIAL COMPRISING A SUPPORT HAVING THEREON A RED-SENSITIVE ELEMENT, A GREEN-SENSITIVE ELEMENT AND A BLUE-SENSITIVE ELEMENT, EACH OF SAID ELEMENTS CONTAINING A NONDIFFUSING COUPLER, THE IMPROVEMENT CHARACTERIZED IN THAT AT LAST ONE OF SAID ELEMENTS IS COMPOSED OF THREE ADJACENT GELATINO SILVER HALIDE EMULSION LAYERS AND FURTHER CHARACTERIZED IN THAT (A) THE SENSITIVITY OF SAID UPPERMOST EMUSLION LAYER BEING THE HIGHEST AND THAT OF THE LOWERMOST EMULSION LAYER BEING THE LOWEST, (B) THE MAXIMUM OPTICAL DENSITY OF SAID UPPERMOST EMULSION LAYER AND THE MAXIMUM DENSITY OF SAID INTERMEDIATE EMULSION LAYER BEING AT MOST 0.60, RESPECTIVELY, (C) SAID UPPERMOST EMULSION LAYER, SAID INTERMEDIATE EMULSION LAYER, AND SAID LOWERMOST EMULSION LAYER BEING SENSITIVE TO THE SAME SPECTRAL REGION OF VISIBLE LIGHT, AND (D) THE SENSITIVITY DIFFERENCE BETWEEN SAID UPPERMOST EMULSION LLAYER AND SAID INTERMEDIATE EMULSION LAYER AND THE SENSITIVITY DIFFERENCE BETWEEN SAID INTERMEDIATE EMULSION LAYER AND SAID LOWERMOST EMULSION LAYER EACH RANGING FROM ABOUT 0.15 TO ABOUT 0.6 SAID SENSITIVITY OF EACH OF SAID EMULSION LAYERS BEING INDICATED BY THE LOGARITHM OF THE INERTIA POINT THEREOF.

Inventors

  • 👤 A Kumai
  • 👤 T Usami

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 15:31
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C7/3022; G03C2007/3027; G03C2007/3034

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 182 words
IN A GELATINO-SILVER HALIDE COLOR PHOTOGRAPHIC MULTILAYER LIGHT-SENSITIVE MATERIAL COMPRISING A SUPPORT HAVING THEREON A RED-SENSITIVE ELEMENT, A GREEN-SENSITIVE ELEMENT AND A BLUE-SENSITIVE ELEMENT, EACH OF SAID ELEMENTS CONTAINING A NONDIFFUSING COUPLER, THE IMPROVEMENT CHARACTERIZED IN THAT AT LAST ONE OF SAID ELEMENTS IS COMPOSED OF THREE ADJACENT GELATINO SILVER HALIDE EMULSION LAYERS AND FURTHER CHARACTERIZED IN THAT (A) THE SENSITIVITY OF SAID UPPERMOST EMUSLION LAYER BEING THE HIGHEST AND THAT OF THE LOWERMOST EMULSION LAYER BEING THE LOWEST, (B) THE MAXIMUM OPTICAL DENSITY OF SAID UPPERMOST EMULSION LAYER AND THE MAXIMUM DENSITY OF SAID INTERMEDIATE EMULSION LAYER BEING AT MOST 0.60, RESPECTIVELY, (C) SAID UPPERMOST EMULSION LAYER, SAID INTERMEDIATE EMULSION LAYER, AND SAID LOWERMOST EMULSION LAYER BEING SENSITIVE TO THE SAME SPECTRAL REGION OF VISIBLE LIGHT, AND (D) THE SENSITIVITY DIFFERENCE BETWEEN SAID UPPERMOST EMULSION LLAYER AND SAID INTERMEDIATE EMULSION LAYER AND THE SENSITIVITY DIFFERENCE BETWEEN SAID INTERMEDIATE EMULSION LAYER AND SAID LOWERMOST EMULSION LAYER EACH RANGING FROM ABOUT 0.15 TO ABOUT 0.6 SAID SENSITIVITY OF EACH OF SAID EMULSION LAYERS BEING INDICATED BY THE LOGARITHM OF THE INERTIA POINT THEREOF.
Claim 2
Dependent Claim 182 words
IN A GELATINO-SILVER HALIDE COLOR PHOTOGRAPHIC MULTILAYER LIGHT-SENSITIVE MATERIAL COMPRISING A SUPPORT HAVING THEREON A RED-SENSITIVE ELEMENT, A GREEN-SENSITIVE ELEMENT AND A BLUE-SENSITIVE ELEMENT, EACH OF SAID ELEMENTS CONTAINING A NONDIFFUSING COUPLER, THE IMPROVEMENT CHARACTERIZED IN THAT AT LAST ONE OF SAID ELEMENTS IS COMPOSED OF THREE ADJACENT GELATINO SILVER HALIDE EMULSION LAYERS AND FURTHER CHARACTERIZED IN THAT (A) THE SENSITIVITY OF SAID UPPERMOST EMUSLION LAYER BEING THE HIGHEST AND THAT OF THE LOWERMOST EMULSION LAYER BEING THE LOWEST, (B) THE MAXIMUM OPTICAL DENSITY OF SAID UPPERMOST EMULSION LAYER AND THE MAXIMUM DENSITY OF SAID INTERMEDIATE EMULSION LAYER BEING AT MOST 0.60, RESPECTIVELY, (C) SAID UPPERMOST EMULSION LAYER, SAID INTERMEDIATE EMULSION LAYER, AND SAID LOWERMOST EMULSION LAYER BEING SENSITIVE TO THE SAME SPECTRAL REGION OF VISIBLE LIGHT, AND (D) THE SENSITIVITY DIFFERENCE BETWEEN SAID UPPERMOST EMULSION LLAYER AND SAID INTERMEDIATE EMULSION LAYER AND THE SENSITIVITY DIFFERENCE BETWEEN SAID INTERMEDIATE EMULSION LAYER AND SAID LOWERMOST EMULSION LAYER EACH RANGING FROM ABOUT 0.15 TO ABOUT 0.6 SAID SENSITIVITY OF EACH OF SAID EMULSION LAYERS BEING INDICATED BY THE LOGARITHM OF THE INERTIA POINT THEREOF.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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