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US5175080A
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Methine compound and silver halide photographic material containing the methine compound
Assignee: Fujifilm Holdings Corp
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Filing: 1991-10-07
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Granted: 1992-12-29
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Expires: 2011-10-07
Abstract
Abstract 'Disclosed is a compound represented by the following general formula (I): ##STR1## wherein Z 1 and Z 2 each represents an oxygen atom, a sulfur atom or a selenium atom; R 1 represents an alkyl group, an aryl group or a heterocyclic group; Q 1 and Q 2 each represents a methylene group; Q 3 and Q 4 each represents an atomic group required to form a five-membered, six-membered or seven-membered ring; L 1 represents a methine group; A 1 and A 2 each represents an atomic group required to form a benzene ring; M 1 represents a counter ion for neutralizing the electric charge of the compound; and m 1 represents the number required for neutralizing that electric charge. There is also disclosed a silver halide photographic material containing at least one compound of general formula (I).
Inventors
- 👤 Takanori Hioki
- 👤 Takashi Kato
- 👤 Tadashi Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:34
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; C; C09; C09B; C09B23/00; C09B23/0066; G03C1/10; G03C1/12; G03C1/127
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
A silver halide photographic material containing at least one compound according to the following general formula (I): ##STR39## wherein Z 1 and Z 2 each represents an oxygen atom, a sulfur atom or a selenium atom; R 1 represents an alkyl group, an aryl group or a heterocyclic group; Q 1 and Q 2 each represents a methylene group; Q 3 and Q 4 each represents an atomic group required to form a five-membered, six-membered or seven-membered ring; L 1 represents a methine group; A 1 and A 2 each represents an atomic group required to form a benzene ring; M 1 represents a counter ion for neutralizing the electric charge of the compound; and m 1 represents the number required for neutralizing that electric charge.
Claim 2
Dependent Claim
126 words
A silver halide photographic material containing at least one compound according to the following general formula (I): ##STR39## wherein Z 1 and Z 2 each represents an oxygen atom, a sulfur atom or a selenium atom; R 1 represents an alkyl group, an aryl group or a heterocyclic group; Q 1 and Q 2 each represents a methylene group; Q 3 and Q 4 each represents an atomic group required to form a five-membered, six-membered or seven-membered ring; L 1 represents a methine group; A 1 and A 2 each represents an atomic group required to form a benzene ring; M 1 represents a counter ion for neutralizing the electric charge of the compound; and m 1 represents the number required for neutralizing that electric charge.
Claim 3
Dependent Claim
22 words
The silver halide photographic material according to claim 1, wherein R 1 is an alkyl group having 1 to 18 carbon atoms.
Claim 4
Dependent Claim
16 words
The silver halide photographic material according to claim 1, wherein R 1 is an aryl group.
Claim 5
Dependent Claim
19 words
The silver halide photographic material according to claim 1, wherein R 1 is a methyl, ethyl or phenyl group.
Claim 6
Dependent Claim
165 words
The silver halide photographic material according to claim 1, wherein the material also contains a compound according to the following general formula (III): ##STR40## wherein A 1 represents a bivalent aromatic residue; R 9 , R 10 , R 11 and R 12 each represents a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an aryloxy group, a halogen atom, a heterocyclic nucleus, a heterocyclic thio group, an arylthio group, an amino group, an alkylamino group, an arylamino group, an aralkylamino group, an aryl group or a mercapto group, each of which may be substituted; at least one of A 1 , R 9 , R 10 , R 11 and R 12 is a group containing a sulfo group; X 1 , Y 1 , X 1 ' and Y 1 ' each represents --CH═ or --N═, and at least one of X 1 and Y 1 and at least one of X 1 ' and Y 1 ' are --N═.
Claim 7
Dependent Claim
27 words
The silver halide photographic material according to claim 5, wherein A 1 contains a --SO 3 M group, wherein M is a hydrogen atom or a cation.
References Cited (Backward Citations)
US5093226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |