Patent US2728658A successfully refreshed from Google Patents.
US2728658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzoyl acetanilide couplers for color photography
Assignee: Eastman Kodak Co
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Filing: 1952-06-26
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Granted: 1955-12-27
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Expires: 1972-06-26
Abstract
No abstract record available.
Inventors
- 👤 Fred C Mccrossen
- 👤 Paul W Vittum
- 👤 Weissberger Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION COMPRISING A MIXTURE OF SILVER HALIDE AND A COUPLER COMPOUND OF THE CLASS CONSISTING OF 4-(A-2''-METHOXYBENZOYL-A-CHLOROACETAMIDO)-3"-(4''''''-TERT. AMYLPHENOXY) BENZANILIDE 4-(A-2''-METHOXYBENZOYL-A-CHLOROACETAMIDO)-2", 4"-DITERT. AMYLPHENOXYACETANILIDE A - O - METHOXYBENZOYL - A-CHLORO-4-(A-(2,4-DI-TERT-AMYLPHENOXY)-N-BUTYRAMIDO)ACETANILIDE DIMETHYL 5-(4-(2 4-DI-TERT-AMYLPHENOXY)-3-(A-(4-(A-OANISOYL -A-CHLOROACETAMIDO)PHENOXY)ACETAMIDO)-BENZAMIDO)ISOPHTHALATE A - -(O - METHOXYBENZOYL)A-CHLORO-3-(A-(2,4-DI-TERT. AMYLPHENOXY)-N-BUTYRAMIDO)ACETANILIDE.
Claim 2
Dependent Claim
43 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION COMPRISING A MIXTURE OF SILVER HALIDE AND A COUPLER COMPOUND OF THE CLASS CONSISTING OF 4-(A-2''-METHOXYBENZOYL-A-CHLOROACETAMIDO)-3"-(4''''''-TERT. AMYLPHENOXY) BENZANILIDE 4-(A-2''-METHOXYBENZOYL-A-CHLOROACETAMIDO)-2", 4"-DITERT. AMYLPHENOXYACETANILIDE A - O - METHOXYBENZOYL - A-CHLORO-4-(A-(2,4-DI-TERT-AMYLPHENOXY)-N-BUTYRAMIDO)ACETANILIDE DIMETHYL 5-(4-(2 4-DI-TERT-AMYLPHENOXY)-3-(A-(4-(A-OANISOYL -A-CHLOROACETAMIDO)PHENOXY)ACETAMIDO)-BENZAMIDO)ISOPHTHALATE A - -(O - METHOXYBENZOYL)A-CHLORO-3-(A-(2,4-DI-TERT. AMYLPHENOXY)-N-BUTYRAMIDO)ACETANILIDE.
References Cited (Backward Citations)
US2407210A
Cited
FR959910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |