Patent US3811892A successfully refreshed from Google Patents.
US3811892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide color photographic material containing cyancolored couplers
Assignee: Konica Minolta Inc
•
Filing: 1972-07-24
•
Granted: 1974-05-21
•
Expires: 1992-07-24
Abstract
Abstract WHEREIN N IS AN INTEGER OF 1 TO 4; M IS AN INTEGER OF 0 TO 2; R is a phenyl group or an alicyclic group, may be used in the form of a solution in an organic solvent which has an automasking mechanism for compensating the drawback in color reproduction of the light-sensitive, silver halide, color photographic material, said cyan-colored coupler having such properties as excellent solubility in high boiling solvents, favorable color-forming properties, and being capable of giving less deposition, thereby causing less graininess of the resulting image. A light-sensitive, silver halide, color photographic material having a cyan-colored coupler of the general formula,
Inventors
- 👤 T Kagami
- 👤 M Fujiwhara
- 👤 T Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:30
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
25 words
A light-sensitive, silver halide, color photographic material as claimed in claim 1, wherein said coupler is included in the red-sensitive gelatinous silver halide emulsion layer.
Claim 2
Dependent Claim
55 words
A light-sensitive, silver halide, color photographic material as claimed in claim 1, wherein the photographic material comprises a red-sensitive silver halide emulsion layer containing the coupler of the formula of claim 1, together with a blue-sensitive silver halide emulsion layer containing a yellow coupler and a green-sensitive silver halide emulsion layer containing a magenta coupler.
Claim 3
Dependent Claim
29 words
A light-sensitive, silver halide, color photographic material as claimed in claim 1, wherein the coupler is a compound of the said general formula in which R is phenyl group.
Claim 4
Dependent Claim
33 words
A light-sensitive, silver halide, color photographic material as claimed in claim 1, wherein the coupler is a compound of the said general formula in which R is a chlorophenyl, alkylphenyl or alkoxyphenyl group.
Claim 5
Dependent Claim
29 words
A light-sensitive, silver halide, color photographic material as claimed in claim 1, wherein the coupler is a compound of the said general formula in which R is cyclohexyl group.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |