Patent US5392397A successfully refreshed from Google Patents.
US4368246A
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US
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Photographic materials and processes comprising color-forming sulfonamidodiphenylamine dye precursors and corresponding phenazine dyes
Assignee: Eastman Kodak Co
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Filing: 1981-07-06
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Granted: 1983-01-11
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Expires: 2001-07-06
Abstract
Abstract In a photographic material for producing a dye image or a dye image and silver image comprising (1) a photographic metal salt, such as photographic silver halide, and (2) a dye precursor, improved images are provided by means of a color-forming para-sulfonamidodiphenylamine dye precursor having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the sulfonamidodiphenylamine and wherein the sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. An exposed photographic material containing the color-forming sulfonamidodiphenylamine dye precursor is processed to produce a negative phenazine dye-enhanced silver image. Alternatively, the exposed photographic material is processed to produce a positive phenazine dye image.
Inventors
- 👤 Rolf S. Gabrielsen
- 👤 Patricia A. Graham
- 👤 James E. Klijanowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:53
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/50; C07D241/52; C09; C09B; C09B17/00; C09B17/02; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3244; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 65
Claim 1
Independent Claim
64 words
In a photographic element comprising a support having thereon a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 2
Dependent Claim
64 words
In a photographic element comprising a support having thereon a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 3
Dependent Claim
202 words
In a photographic element comprising a support having thereon a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR25## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms or ##STR26## R 4 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine, and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 4
Dependent Claim
202 words
In a photographic element comprising a support having thereon a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR25## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms or ##STR26## R 4 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine, and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 5
Dependent Claim
11 words
A photographic element as in claim 2 also comprising a binder.
Claim 6
Dependent Claim
18 words
A photographic element as in claim 2 wherein said photographic silver salt consists essentially of photographic silver halide.
Claim 7
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR27##
Claim 8
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR28##
Claim 9
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR29##
Claim 10
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR30##
Claim 11
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR31##
Claim 12
Dependent Claim
17 words
A photographic element as in claim 2 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR32##
Claim 13
Dependent Claim
26 words
A photographic element as in claim 2 also comprising, in binder, in reactive association with said photographic silver salt, a cross-oxidizing, photographic silver halide developing agent.
Claim 14
Dependent Claim
26 words
A photographic element as in claim 2 also comprising, in binder, in reactive association with said photographic silver salt, a 3-pyrazolidone, photographic silver halide developing agent.
Claim 15
Dependent Claim
38 words
In a photographic element comprising a support having thereon, in a gelatino binder, in reactive association, photographic silver halide and a dye precursor, the improvement comprising: as said dye precursor, a color-forming sulfonamidodiphenylamine represented by the formula: ##STR33##
Claim 16
Dependent Claim
38 words
In a photographic element comprising a support having thereon, in a gelatino binder, in reactive association, photographic silver halide and a dye precursor, the improvement comprising: as said dye precursor, a color-forming sulfonamidodiphenylamine represented by the formula: ##STR33##
Claim 17
Dependent Claim
60 words
In a photographic composition comprising a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 18
Dependent Claim
60 words
In a photographic composition comprising a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 19
Dependent Claim
198 words
In a photographic composition comprising a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR34## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms, or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR35## R 4 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine; and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 20
Dependent Claim
198 words
In a photographic composition comprising a photographic silver salt and a dye precursor, the improvement comprising: as said dye precursor, a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR34## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms, or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR35## R 4 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine; and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 21
Dependent Claim
11 words
A photographic composition as in claim 15 also comprising a binder.
Claim 22
Dependent Claim
16 words
A photographic composition as in claim 15 wherein said photographic silver salt is photographic silver halide.
Claim 23
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR36##
Claim 24
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR37##
Claim 25
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR38##
Claim 26
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR39##
Claim 27
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR40##
Claim 28
Dependent Claim
17 words
A photographic composition as in claim 15 wherein said color-forming para-sulfonamidodiphenylamine is represented by the formula: ##STR41##
Claim 29
Dependent Claim
26 words
A photographic composition as in claim 15 also comprising, in binder, in reactive association with said photographic silver salt, a cross-oxidizing, photographic silver halide developing agent.
Claim 30
Dependent Claim
27 words
A photographic composition as in claim 15 also comprising, in binder, in reactive association with said photographic silver salt, a 3-pyrazolidone cross-oxidizing photographic silver halide developing agent.
Claim 31
Dependent Claim
31 words
In a photographic composition comprising, in a gelatino binder, photographic silver halide and a dye precursor, the improvement comprising: as said dye precursor, a color-forming sulfonamidodiphenylamine represented by the formula: ##STR42##
Claim 32
Dependent Claim
31 words
In a photographic composition comprising, in a gelatino binder, photographic silver halide and a dye precursor, the improvement comprising: as said dye precursor, a color-forming sulfonamidodiphenylamine represented by the formula: ##STR42##
Claim 33
Independent Claim
91 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising a support having thereon, in reactive association, a photographic silver salt and a dye precursor comprising a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye, said process comprising the step of: developing said element by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 34
Independent Claim
91 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising a support having thereon, in reactive association, a photographic silver salt and a dye precursor comprising a color-forming para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye, said process comprising the step of: developing said element by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 35
Independent Claim
222 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising a support having thereon a photographic silver salt and a phenazine dye precursor consisting essentially of a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR43## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR44## R 4 is alkyl containing 1 to 20 carbon atoms or aryl containing 6 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine; and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye; said process comprising the step of: developing said element by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 36
Independent Claim
222 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising a support having thereon a photographic silver salt and a phenazine dye precursor consisting essentially of a color-forming para-sulfonamidodiphenylamine represented by the formula: ##STR43## wherein: R is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 1 and R 2 are individually hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 4 ; and at least one of R 1 and R 2 is --NHSO 2 R 4 ; R 3 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR44## R 4 is alkyl containing 1 to 20 carbon atoms or aryl containing 6 to 20 carbon atoms; R 5 is hydrogen or alkyl containing 1 to 20 carbon atoms; and R 6 is alkyl containing 1 to 20 carbon atoms; and, wherein the para-sulfonamidodiphenylamine has one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine; and, wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye; said process comprising the step of: developing said element by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 37
Independent Claim
57 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising, in a gelatino binder, in reactive association, photographic silver halide and a sulfonamidodiphenylamine represented by the formula: ##STR45## said process comprising the step of: developing said phenazine dye enhanced silver image by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 38
Independent Claim
57 words
A method of producing a phenazine dye enhanced silver image in an exposed photographic element comprising, in a gelatino binder, in reactive association, photographic silver halide and a sulfonamidodiphenylamine represented by the formula: ##STR45## said process comprising the step of: developing said phenazine dye enhanced silver image by means of a 3-pyrazolidone cross-oxidizing silver halide developing agent.
Claim 39
Dependent Claim
75 words
In a photographic silver halide processing composition for producing a dye enhanced silver image comprising: (a) a cross-oxidizing photographic silver halide developing agent, and (b) a color-forming dye precursor, the improvement comprising: as said dye precursor, a para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 40
Dependent Claim
75 words
In a photographic silver halide processing composition for producing a dye enhanced silver image comprising: (a) a cross-oxidizing photographic silver halide developing agent, and (b) a color-forming dye precursor, the improvement comprising: as said dye precursor, a para-sulfonamidodiphenylamine having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the para-sulfonamidodiphenylamine and wherein the para-sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido substituted phenazine dye.
Claim 41
Dependent Claim
17 words
A photographic silver halide processing composition as in claim 30 also comprising a base or base-release agent.
Claim 42
Dependent Claim
22 words
A photographic silver halide processing composition as in claim 30 wherein said dye precursor comprises a para-sulfonamidodiphenylamine represented by the formula: ##STR46##
Claim 43
Dependent Claim
138 words
An exposed and processed photographic element comprising a support having thereon a silver image and a phenazine dye image comprising a phenazine dye represented by the formula: ##STR47## wherein: R 7 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 8 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR48## R 9 is hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 12 ; R 10 is hydrogen or alkyl containing 1 to 20 carbon atoms; R 11 is alkyl containing 1 to 20 carbon atoms; and R 12 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms.
Claim 44
Dependent Claim
138 words
An exposed and processed photographic element comprising a support having thereon a silver image and a phenazine dye image comprising a phenazine dye represented by the formula: ##STR47## wherein: R 7 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 8 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR48## R 9 is hydrogen, alkyl containing 1 to 4 carbon atoms or --NHSO 2 R 12 ; R 10 is hydrogen or alkyl containing 1 to 20 carbon atoms; R 11 is alkyl containing 1 to 20 carbon atoms; and R 12 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms.
Claim 45
Dependent Claim
25 words
An exposed and processed photographic element as in claim 33 also comprising a binder and wherein said silver image consists essentially of a silver image.
Claim 46
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR49##
Claim 47
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR49##
Claim 48
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR50##
Claim 49
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR50##
Claim 50
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR51##
Claim 51
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR51##
Claim 52
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR52##
Claim 53
Dependent Claim
31 words
An exposed and processed photographic element comprising a support having thereon, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR52##
Claim 54
Dependent Claim
131 words
An exposed and processed photographic composition comprising, in binder, a silver image and a phenazine dye image comprising a phenazine dye represented by the formula: ##STR53## wherein: R 7 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 8 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR54## R 9 is hydrogen or alkyl containing 1 to 4 carbon atoms; R 10 is hydrogen or alkyl containing 1 to 20 carbon atoms; R 11 is alkyl containing 1 to 20 carbon atoms; and R 12 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms.
Claim 55
Dependent Claim
131 words
An exposed and processed photographic composition comprising, in binder, a silver image and a phenazine dye image comprising a phenazine dye represented by the formula: ##STR53## wherein: R 7 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms, or alkaryl containing 7 to 20 carbon atoms; R 8 is alkoxy containing 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR54## R 9 is hydrogen or alkyl containing 1 to 4 carbon atoms; R 10 is hydrogen or alkyl containing 1 to 20 carbon atoms; R 11 is alkyl containing 1 to 20 carbon atoms; and R 12 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or alkaryl containing 7 to 20 carbon atoms.
Claim 56
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR55##
Claim 57
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR55##
Claim 58
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR56##
Claim 59
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR56##
Claim 60
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR57##
Claim 61
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR57##
Claim 62
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR58##
Claim 63
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR58##
Claim 64
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR59##
Claim 65
Dependent Claim
27 words
An exposed and processed photographic composition comprising, in binder, a silver image enhanced by a phenazine dye image comprising a phenazine dye represented by the formula: ##STR59##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |