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US3834907A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic elements containing color-providing layer units for amplification processes

Assignee: Eastman Kodak Co
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Filing: 1972-05-23
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Granted: 1974-09-10
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Expires: 1992-05-23
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Abstract

Abstract PHOTOGRAPHIC ELEMENTS ARE DISCLOSED WHICH COMPRISE A SUPPORT HAVING THEREON AT LEAST ONE DYE IMAGE-PROVIDING LAYER UNIT WHICH CONTAINS A LIGHT-SENSITIVE SILVER SALT AND A STOICHIOMETRIC EXCESS OF AN IMAGE DYE-PROVIDING COLOR COUPLER. IN ONE ASPECT, THE PHOTOGRAPHIC ELEMENTS OF THIS INVENTION ARE MULTICOLOR PHOTOGRAPHIC ELEMENTS WHEREIN AT LEAST TWO DISTINCT COLORS ARE PRODUCED IN TWO SEPARATE LAYER UNITS OF THE ELEMENT. IN ANOTHER ASPECT, MULTICOLOR PHOTOGRAPHIC ELEMENTS ARE DISCLOSED WHICH COMPRISE AT LEAST TWO IMAGE DYE-PROVIDING LAYER UNITS CONTAINING A SILVER HALIDE EMULSION IN A CONCENTRATION OF UP TO 30 MG./ FT.2 OR SILVER AND AN IMAGE DYE-PROVIDING COLOR COUPLER IN AT LEAST A 40 PERCENT STOICHIOMETRIC EXCESS BASED ON SILVER.

Inventors

  • 👤 V Bissonette

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 17:57
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C5/00; G03C5/26; G03C5/40; G03C5/42; G03C7/00; G03C7/30

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) 1977-09-09 1978-03-11 1978-09-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-09 1982-03-11 1982-09-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-09 1986-03-11 1986-09-10 $7700.00 Window Closed / Lapsed

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