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US3753719A Expired / Lapsed US ⏱️ 0.0 years remaining

Light-sensitive color photographic material

Assignee: Konica Minolta Inc
•
Filing: 1971-03-19
•
Granted: 1973-08-21
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Expires: 1991-03-19
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Abstract

Abstract A new combination of a merocyanine type compound of the formula (I) wherein R1 is a lower alkyl group; R2 is a lower alkyl, lower alkenyl or aryl group; Z1 represents a non-metallic atom group necessary to complete a 5- or 6-memberd heterocyclic ring nucleus; Z2 represents a non-metallic atom group necessary to complete a 5-membered ring; and n is 0 or 1, in combination with at least one compound of the formula WHEREIN R4, R5 and R6 are individually a hydrogen atom, or an alkyl, alkenyl, aryl or aralkyl group, and R5 and R6 may be the same or different, is found to be useful in a light-sensitive silver halide color photographic material to improve graininess of the resulting color image when said photographic material is subjected to imagewise exposure to light and color development.

Inventors

  • 👤 K Sakamoto
  • 👤 I Fushiki
  • 👤 E Sakamoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 07:18
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; G03C7/00; G03C7/30; G03C7/392; G03C7/39296

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 29 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein the combination of said compound (I) and said compound (II) is incorporated into the coupler-containing layer.
Claim 2
Dependent Claim 33 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein said compound (I) and said compound (II) are individually incorporated into two different layers which are adjacent to each other.
Claim 3
Dependent Claim 43 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein each of said compounds (I) and (II) is used in an amount of 10 6 to 10 1 mole per mole of the silver halide contained in said photographic material.

References Cited (Backward Citations)

US3367780A Cited
US3457078A Cited
US3480439A Cited
US3397987A Cited
US3563754A Cited
US3615644A Cited
US3580723A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-20 1977-02-19 1977-08-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-20 1981-02-19 1981-08-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-20 1985-02-19 1985-08-21 $7700.00 Window Closed / Lapsed

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