Patent US4266019A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4266019A Expired / Lapsed US ⏱️ 0.0 years remaining

Silver halide photographic material containing yellow coupler

Assignee: Fujifilm Holdings Corp
•
Filing: 1979-09-13
•
Granted: 1981-05-05
•
Expires: 1999-09-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A silver halide color photographic material containing a yellow coupler represented by following general formula (I): <IMAGE> (I) wherein A represents a yellow coupler from which one hydrogen atom bound to a carbon atom other than at a coupling active site is removed, and R1 and R2 each represents a straight chain or branched alkyl group containing 2 to 16 carbon atoms, with the sum of the carbon atoms contained in R1 and R2 being 10 to 20 is disclosed.

Inventors

  • 👤 Hidetoshi Kobayashi
  • 👤 Mitsugu Tanaka
  • 👤 Kozo Inouye
  • 👤 Hideki Naito

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 21:06
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/30; C07D263/34; C07D263/44; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 188 words
A silver halide color photographic material containing a yellow coupler represented by following general formula (I); ##STR16## wherein A represents a yellow coupler from which one hydrogen atom bound to a carbon atom other than at a coupling active site is removed having the formula (II); ##STR17## wherein R 3 represents an aliphatic group, an aromatic group or a heterocyclic ring, R 4 represents an aromatic group or a heterocyclic ring, wherein X is represented by the formulae (VI)-(IX); ##STR18## wherein X 1 and X 2 each represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or a hydroxy group, X 3 , X 4 and X 5 each represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group or an acyl group, W represents an oxygen atom or a sulfur atom and X 6 represents a monovalent substituent, and R 1 and R 2 each represents a straight chain or branched alkyl group containing 2 to 16 carbon atoms, with the sum of the carbon atoms contained in R 1 and R 2 being 10 to 20.
Claim 2
Dependent Claim 188 words
A silver halide color photographic material containing a yellow coupler represented by following general formula (I); ##STR16## wherein A represents a yellow coupler from which one hydrogen atom bound to a carbon atom other than at a coupling active site is removed having the formula (II); ##STR17## wherein R 3 represents an aliphatic group, an aromatic group or a heterocyclic ring, R 4 represents an aromatic group or a heterocyclic ring, wherein X is represented by the formulae (VI)-(IX); ##STR18## wherein X 1 and X 2 each represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or a hydroxy group, X 3 , X 4 and X 5 each represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group or an acyl group, W represents an oxygen atom or a sulfur atom and X 6 represents a monovalent substituent, and R 1 and R 2 each represents a straight chain or branched alkyl group containing 2 to 16 carbon atoms, with the sum of the carbon atoms contained in R 1 and R 2 being 10 to 20.
Claim 3
Dependent Claim 43 words
The silver halide color photographic material of claim 1, wherein said coupler is represented by the formulae ##STR19## wherein R 1 , R 2 , R 3 and X are defined as above and Y represents a halogen atom or an alkoxy group.
Claim 4
Dependent Claim 28 words
The color photographic material of claims 1 or 2, wherein said coupler is present in an amount of about 5 to 1500 grams per mol of silver halide.
Claim 5
Dependent Claim 28 words
The color photographic material of claims 1 or 2, wherein said coupler is present in an amount of about 10 to 500 grams per mol of silver halide.
Claim 6
Dependent Claim 27 words
The color photographic material of claim 1, wherein said material is a color negative film, a color positive film, a color reversal film or a color paper.
Claim 7
Dependent Claim 18 words
The color photographic material of claim 1, wherein said coupler is located in a silver halide emulsion layer.
Claim 8
Dependent Claim 22 words
The color photographic material of claim 6, wherein said silver halide emulsion layer or an adjacent layer contains a p-substituted phenol derivative.

References Cited (Backward Citations)

US3551155A Cited
US3576636A Cited
US3892576A Cited
US3832386A Cited
US4057432A Cited
US4046575A Cited
US4072525A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-04 1984-11-03 1985-05-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-04 1988-11-03 1989-05-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-04 1992-11-03 1993-05-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag