Patent US1880859A successfully refreshed from Google Patents.
US3888680A
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US
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Light-sensitive silver halide color photographic material containing bis-pyrazolone couplers
Assignee: Konica Minolta Inc
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Filing: 1973-12-26
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Granted: 1975-06-10
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Expires: 1993-12-26
Abstract
Abstract A light-sensitive silver halide color photographic material is disclosed which comprises a bis-type coupler of the following general formula: WHEREIN R is alkyl, aralkyl or aryl X, Y and Z are individually hydrogen, halogen or alkyl or alkoxyl group having 1 to 4 carbon atoms, one of X and Z being a halogen atom; and n is zero or 1.
Inventors
- 👤 Mitsuto Fujiwhara
- 👤 Keiji Kasai
- 👤 Ryosuke Satoh
- 👤 Yoshinobu Nakagawa
- 👤 Tuneo Tanigawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/384; C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A LIGHT-SENSENTIVE SILVDR HALIDE COLOR PHOTGRAPHIC MATERIAL CONTAINING A BIS-TYPE COUPLER OF THE GENERAL FORMULA,
Claim 2
Dependent Claim
15 words
A LIGHT-SENSENTIVE SILVDR HALIDE COLOR PHOTGRAPHIC MATERIAL CONTAINING A BIS-TYPE COUPLER OF THE GENERAL FORMULA,
Claim 3
Dependent Claim
23 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein said bis-type coupler is a compound of the structural formula
Claim 4
Dependent Claim
23 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein said bis-type coupler is a compound of the structural formula
Claim 5
Dependent Claim
23 words
A light-sensitive silver halide color photographic material as claimed in claim 1, wherein said bis-type coupler is a compound of the structural formula
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |