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US3737312A Expired / Lapsed US ⏱️ 0.0 years remaining

Multicolor photographic film elements comprising a minimum sensitivity sound track recording silver halide emulsion layer and processes for their use

Assignee: Eastman Kodak Co
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Filing: 1972-03-16
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Granted: 1973-06-05
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Expires: 1992-03-16
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Abstract

Abstract NOVEL PHOTOGRAPHIC ELEMENTS ARE PROVIDED HAVING A PICTURE RECORDING AREA AND A SOUNDTRACK RECORDING AREA COMPRISING A TRANSPARENT SUPPORT HAVING COATED THEREON THREE PICTURE RECORDING COLOR-FORMING UNITS WHICH ARE SO DISPOSED AND SENSITIZED THAT EACH IS ESSENTIALLY SENSITIVE TO A DIFFERENT PRIMARY COLOR REGION OF THE VISIBLE SPECTRUM, SUCH COLOR-FORMING UNITS HAVING MINIMUM SENSITIVITY TO AT LEAST ONE REGION OF THE SPECTRUM BRIDGING ADJACENTLY SENSITIZED COLOR-FORMING UNITS AND AN AUXILIARY IMAGE OR SOUND TRACK RECORDING SILVER HALIDE EMULSION LAYER SENSITIVE TO SUCH REGION OF MINIMUM SENSITIVITY, SAID LAYER NOT FORMING AN IMAGE UPON IMAGE-FORMING EXPOSURE OF THE PICTURE RECORDING UNITS, THE COLOR-FORMING UNITS OF ADJACENT SPECTRAL SENSITIVITY HAVING A PHOTOGRAPHIC SPEED OF AT LEAST 2 TIMES THE PHOTOGRAPHIC SPEED OF THE AUXILIARY LAYER WHEN SELECTIVELY EXPOSED IN THE REGION OF MINIMUM SENSITIVITY. SUBSEQUENT TO IMAGEWISE EXPOSURE OF THE PICTURE AND SOUND TRACK RECORDING AREAS, THE ELEMENT IS PROCESSED BY THE NOVEL METHOD OF PROCESSING WHICH COMPRISES (A) FORMING A PICTURE RECORD COMPRISING SILVER AND A NONDIFFUSIBLE DYE IN THE PICTURE RECORDING AREA AND AN AUXILIARY IMAGE RECORD OR SOUND TRACK RECORD COMPRISING SILVER IN THE SOUND TRACK AREA AND CONTACTING THE SILVER OF THE AUXILIARY LAYER WITH A BALLASTED SILVER BLEACH INHIBITOR AND (B) REMOVING THE BLEACHABLE SILVER IMAGES REMAINING AFTER STEP (A) AND THE RESIDUAL OR UNDEVELOPED SILVER HALIDE. D R A W I N G

Inventors

  • 👤 J Baptista
  • 👤 A Smith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 01:47
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G03; G03C; G03C7/00; G03C7/22; G03C7/24

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1976-06-04 1976-12-04 1977-06-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-04 1980-12-04 1981-06-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-04 1984-12-04 1985-06-05 $7700.00 Window Closed / Lapsed

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