US3615504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color photography utilizing 2-pyrazolin-5-one color couplers containing in the 3-position a 2 4 6-trime thylphenylacylamino group
Assignee: Agfa Gevaert NV
•
Filing: 1969-06-19
•
Granted: 1971-10-26
•
Expires: 1989-06-19
Abstract
Abstract Silver halide photographic materials and processes utilizing 2pyrazolin-5-one color couplers carrying in the 3-position a 2, 4, 6-trimethylphenylacylamino group.
Inventors
- 👤 Marcel Jacob Monbaliu
- 👤 Raphael Karel Van Poucke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:28
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/384
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
A method according to claim 1, wherein the 2,4,6-trimethylphenylacylamino group is a 2,4,6-trimethylphenylsulphonamido group.
Claim 2
Dependent Claim
32 words
A method according to claim 1, wherein said color coupler is present in a light-sensitive silver halide Emulsion layer or other colloid layer in water-permeable relationship therewith of the said photographic material.
Claim 3
Dependent Claim
14 words
A method according to claim 3, wherein said color coupler corresponds to the formula:
Claim 4
Dependent Claim
50 words
A method according to claim 4, wherein R includes a substituent of the formula -Y-D wherein Y stands for a chemical bond, oxygen, sulfur, sulphonyl, -NHSO2-, -SO2N(R1)-wherein R1 hydrogen or a lower alkyl group, -CONH-, -NHCO-or -N(alkyl)-and D is an acyclic aliphatic group containing from five to 20 carbon atoms.
Claim 5
Dependent Claim
22 words
A photographic element comprising at least one silver halide emulsion layer and a 2-pyrazolin-5-one color coupler containing the 3-position a 2,4,6-trimethylphenylacylamino group.
Claim 6
Dependent Claim
16 words
A photographic element according to claim 6, wherein the 2,4, 6-trimethylphenylacylamino group is a 2,4,6-trimethylphenylsulphonamido group.
Claim 7
Dependent Claim
15 words
A photographic element according to claim 6, wherein said color coupler corresponds to the formula:
Claim 8
Dependent Claim
51 words
A photographic element according to claim 8, wherein R includes a substituent of the formula -Y-D wherein Y stands for a chemical bond, oxygen, sulfur, sulphonyl, -NHSO2-, -SO2N(R1)-wherein R1 hydrogen or a lower alkyl group, -CONH-, -NHCO-or -N(alkyl)-and D is an acyclic aliphatic group containing from five to 20 carbon atoms.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |