US3928041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development inhibitor yielding compound for silver halide photography
Assignee: Konica Minolta Inc
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Filing: 1973-12-14
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Granted: 1975-12-23
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Expires: 1993-12-14
Abstract
Abstract A light-sensitive silver halide photographic material is developed in the presence of a development inhibitor-yielding compound having the formula wherein X is halogen COOR2 or, -O-Z, where Z is an alkyl group, aryl group, heterocyclic ring residue, acyl group, or -SO2-R3 (R3 is an alkyl group, aryl group or heterocyclic ring residue) and R2 is an alkyl group; and R is where each of R1 is an aliphatic group or aryl group or two of the R1 groups may, together with the adjacent nitrogen atom, for a heterocyclic ring residue, and Y is a group which, when the thioether linkage has been split, forms, together with the sulfur atom, a compound having a development-inhibiting action.
Inventors
- 👤 Mitsuto Fujiwhara
- 👤 Takaya Endo
- 👤 Ryosuke Satoh
- 👤 Toyoaki Masukawa
- 👤 Takahiro Uozumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:49
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
34 words
A METHOD FOR DEVELOPMENT OF AN IMAGEWISE-EXPOSED LIGHT-SENSITIVE HALIDE PHOTOGRAPHIC MATERIAL WHICH COMPRISES SUBJECTING THE IMAGEWISE-EXPOSED LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL TO DEVELOPMENT IN THE PRESENCE OF A DEVELOPMENT INHIBITOR-YIELDING COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
34 words
A METHOD FOR DEVELOPMENT OF AN IMAGEWISE-EXPOSED LIGHT-SENSITIVE HALIDE PHOTOGRAPHIC MATERIAL WHICH COMPRISES SUBJECTING THE IMAGEWISE-EXPOSED LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL TO DEVELOPMENT IN THE PRESENCE OF A DEVELOPMENT INHIBITOR-YIELDING COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
14 words
A light-sensitive silver halide photographic material containing a development inhibitor-yielding compound having the formula
Claim 4
Dependent Claim
14 words
A light-sensitive silver halide photographic material containing a development inhibitor-yielding compound having the formula
Claim 5
Dependent Claim
19 words
A photographic material according to claim 2 wherein Z is an alkyl group having 1 to 5 carbon atoms.
Claim 6
Dependent Claim
22 words
A photographic material according to claim 2 wherein Z is a -COR4 group in which R4 is an alkyl or aryl group.
Claim 7
Dependent Claim
24 words
A photographic material according to claim 2 wherein Z is a heterocyclic ring residue selected from the group consisting of pyridine, furan and thiophene.
Claim 8
Dependent Claim
24 words
A photographic material according to claim 2 wherein R1 is a saturated or olefinically unsaturated aliphatic group having from 1 to 18 carbon atoms.
Claim 9
Dependent Claim
31 words
A photographic material according to claim 2 wherein the heterocyclic ring residue formed by R1 and the adjacent nitrogen atom is selected from the group consisting of piperidine, pyrrolidine and morpholine.
Claim 10
Dependent Claim
33 words
A photographic material according to claim 2 wherein the aryl groups are selected from the group consisting of phenyl and naphthyl groups optionally substituted by halogens, hydroxy groups, alkoxy groups or alkyl groups.
Claim 11
Dependent Claim
36 words
A photographic material according to claim 2 wherein the compound having a development-inhibiting action is selected from the group consisting of 1-phenyl-2-mercaptotetrazole, 1-nitrophenyl-5-mercaptotetrazole, 1-naphthyl-5-mercaptotetrazole, 2-mercaptobenzothiazole, mercaptonaphthothiazole, mercaptooxadiazoles, mercaptopiperidines, mercaptothiadiazoles, mercaptotriazines, mercaptotriazoles, 1-mercapto-2-benzoic acid, 1-mercapto-2-nitrobenzene and 1-mercapto-3-heptadecanoyl-aminobenzene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |