Patent US4440852A successfully refreshed from Google Patents.
US4440852A
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Silver halide photographic light-sensitive material containing oxonal dyes
Assignee: Konica Minolta Inc
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Filing: 1982-06-14
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Granted: 1984-04-03
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Expires: 2002-06-14
Abstract
Abstract The present invention relates to a silver halide photographic light-sensitive material, and particularly to a silver halide photographic light-sensitive material containing a hydrophilic colloidal layer dyed by a dye useful as a light-absorbing dye.
Inventors
- 👤 Akira Onishi
- 👤 Noboru Fujimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:59
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; C09B23/08; C09B23/083; C09B23/04; C09B23/06; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A silver halide photographic light-sensitive material comprising a support and a layer containing an oxonol dye represented by the following formula (1) ##STR7## wherein R 1 is a hydrogen atom, fluorine atom, or a fluorinated alkyl group having from 1 to 4 carbon atoms; R 2 is hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; n is an integer of 0, 1 or 2; and L is methine group which may be substituted.
Claim 2
Dependent Claim
79 words
A silver halide photographic light-sensitive material comprising a support and a layer containing an oxonol dye represented by the following formula (1) ##STR7## wherein R 1 is a hydrogen atom, fluorine atom, or a fluorinated alkyl group having from 1 to 4 carbon atoms; R 2 is hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; n is an integer of 0, 1 or 2; and L is methine group which may be substituted.
Claim 3
Dependent Claim
21 words
A silver halide photographic light-sensitive material according to claim 1, wherein R 1 in the formula (1) is a fluorine atom.
Claim 4
Dependent Claim
23 words
A silver halide photographic light-sensitive material according to claim 1 or 2, wherein R 2 in the formula (1) is substituted phenyl group.
Claim 5
Dependent Claim
31 words
A silver halide photographic light-sensitive material according to claim 3, R 2 in the formula (1) is a phenyl group substituted by a carboxy or sulfo group or a salt thereof.
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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |