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US3165406A Expired / Lapsed US ⏱️ 0.0 years remaining

Multicolor photographic process and product

Assignee: Arthur D Little Inc
•
Filing: 1958-10-24
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Granted: 1965-01-12
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Expires: 1978-10-24
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Abstract

No abstract record available.

Inventors

  • 👤 Wallace J Murray

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 04:59
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03B; G03B27/00; G03B27/72; G03C7/04

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 205 words
METHOD OF DEVELOPING AN EXPOSED FILM COMPRISING IN COMBINATION A TRANSPARENT FILTER LAYER CONSISTING ESSENTIALLY OF TRANSPARENT DOTS IN SYSTEMATIC SIDE-BY-SIDE ARRANGEMENT, EACH OF SAID DOTS BEING ONE OF THE THREE PRIMARY COLORS ACTING SUBTRACTIVELY, A LIGHT-SENSITIVE PANCHROMATIC SILVER HALIDE EMULSION LAYER CAPABLE OF FORMING LATENT IMAGES WHEN EXPOSED AND REACTED WITH A DEVELOPER CAPABLE OF REDUCING SILVER IN A LATENT IMAGE TO FREE SILVER, AN IMAGE-CARRYING LAYER CONTAINING COUPLER DOTS CAPABLE OF REACTING WITH SAID DEVELOPER TO FORM THE ADDITIVE PRIMARY COLORS CORRESPONDING TO THE SUBTRACTIVE FILTER DOTS PRINTED DIRECTLY ABOVE THEM ON SAID FILTER LAYER AND A SUPPORTING SHEET FOR SAID IMAGE-CARRYING LAYER, WHICH COMPRISES EXPOSING SAID SILVER HALIDE EMULSION LAYER TO LIGHT THROUGH SAID FILTER LAYER, CONTACTING SAID FILTER LAYER WITH A LIQUID DEVELOPER, CAUSING SAID LIQUID DEVELOPER TO PERMEATE SAID FILTER LAYER TO CONTACT SAID PANCHROMATIC LAYER AND DEVELOP LATENT IMAGES FORMED THEREIN AND TO REACT WITH THOSE OF SAID COUPLER DOTS ON SAID SUPPORTING SHEET WHICH DO NOT LIE BELOW SAID LATENT IMAGES IN SAID PANCHROMATIC LAYER, AND SEPARATING SAID PANCHROMATIC LAYER FROM SAID IMAGE-CARRYING LAYER, SAID LIQUID DEVELOPER BEING CAPABLE OF DEVELOPING BLACK AND WHITE LATENT IMAGES AND OF REACTING WITH SAID COUPLERS TO FORM THE ADDITIVE PRIMARY COLORS.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-01-12 1968-07-13 1969-01-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-01-12 1972-07-13 1973-01-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-01-12 1976-07-13 1977-01-12 $7700.00 Window Closed / Lapsed

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