US3785829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel cyan-dye forming coupler
Assignee: Eastman Kodak Co
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Filing: 1972-06-02
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Granted: 1974-01-15
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Expires: 1992-06-02
Abstract
Abstract A class of cyan-dye-forming Alpha -naptholic couplers having an alkylthio, an alkysulfinyl, or an alkysulfonyl ballasting group attached onto the Beta -naptholic ring; elements and emulsions containing said couplers and a method for improving color photographic images by utilizing said couplers.
Inventors
- 👤 J Fernandez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/10; C07C323/18; C07C323/21; C07C313/00; C07C313/02; C07C317/00; C07C317/16; C07C317/22; C07C323/23; C07C323/31; C07C323/38; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
44 words
A photographic silver halide emulsion containing at least one Alpha -naphtholic cyan dye-forming coupler of the formula R1-(L)-(NAOL) wherein -(NAOL) is an unballasted or lightly ballasted Alpha -naphtholic cyan dye-forming coupler moiety; R1 is an alkyl group having 12-22 carbon atoms; L represents -S-,
Claim 2
Dependent Claim
15 words
A photographic silver halide emulsion containing at least one cyan dye-forming coupler of the formula
Claim 3
Dependent Claim
41 words
An emulsion of claim 3 wherein R1 is an alkyl group of 13-18 carbon atoms; and R2 is a hydrogen atom or a carbamyl group defining R4 as hydrogen and R5 as an alkyl group of one to 18 carbon atoms.
Claim 4
Dependent Claim
18 words
An emulsion of claim 3 wherein R3 is a hydrogen atom, a sulfonamido group or an arylazo group.
Claim 5
Dependent Claim
15 words
A photographic silver halide emulsion containing at least one cyan dye-forming coupler of the formula
Claim 6
Dependent Claim
15 words
A photographic silver halide emulsion containing at least one cyan dye-forming coupler of the formula
Claim 7
Dependent Claim
15 words
A photographic silver halide emulsion containing at least one cyan dye-forming coupler of the formula
Claim 8
Dependent Claim
30 words
A color photographic silver halide emulsion of claim 3 wherein R3 is defined as a p-alkoxy phenyl azo group in which the alkoxy moiety contains one to 10 carbon atoms.
Claim 9
Dependent Claim
11 words
A color photographic silver halide emulsion containing 7-octadecylthio-1-naphthol as a coupler.
Claim 10
Dependent Claim
11 words
A color photographic silver halide emulsion containing 7-octadecylsulfinyl-1-naphthol as a coupler.
Claim 11
Dependent Claim
11 words
A color photographic silver halide emulsion containing 7-octadecylsulfonyl-1-naphthol as a coupler.
Claim 12
Dependent Claim
11 words
A color photographic silver halide emulsion containing 2-acetyl-7-octadecylsulfonyl-1-naphthol as a coupler.
Claim 13
Dependent Claim
14 words
A color photographic silver halide emulsion containing 2-( Delta butylcarbamyl 7-hexadecylthio-1-naphthol as a coupler.
Claim 14
Dependent Claim
49 words
A color photographic element comprising a support layer having coated thereon at least one gelatino-silver halide emulsion layer containing a non-diffusible Alpha -naphtholic cyan dye-forming coupler with an alkylthio, alkylsulfonyl, or alkylsulfinyl substituent having at least 12 carbon atoms substituted in the Beta ring of the Alpha naphtholic coupler.
Claim 15
Dependent Claim
57 words
A color photographic element comprising a support layer having coated thereon at least one gelatino-silver halide emulsion layer containing at least one Alpha -naphtholic cyan dye-forming coupler of the formula R1-(L)-(NAOL) wherein -(NAOL) is an unballasted or lightly ballasted Alpha -naphtholic cyan dye-forming coupler moiety; R1 is an alkyl group having 12-22 carbon atoms; L represents -S-,
Claim 16
Dependent Claim
27 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion layer applied thereto, and at least one cyan dye-forming coupler of the formula
Claim 17
Dependent Claim
52 words
A color photographic element of claim 17 in which the cyan dye-forming coupler is characterized by defining R1 as an alkyl group of 13-18 carbon atoms; and R2 as a hydrogen atom or a carbamyl group defining R4 as hydrogen and R5 as an alkyl group of one to 18 carbon atoms.
Claim 18
Dependent Claim
26 words
A color photographic element of claim 17 in which the cyan dye-forming coupler is characterized by defining R3 as a hydrogen atom or a sulfonamido group.
Claim 19
Dependent Claim
24 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and at least one cyan dye-forming coupler of the formula
Claim 20
Dependent Claim
24 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and at least one cyan dye-forming coupler of the formula
Claim 21
Dependent Claim
24 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and at least one cyan dye-forming coupler of the formula
Claim 22
Dependent Claim
28 words
A color photographic element of claim 17 wherein R3 is defined as a p-alkoxy phenyl azo group in which the alkoxy moiety contains one to 10 carbon atoms.
Claim 23
Dependent Claim
19 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and 7-octadecylthio-1-naphthol as a coupler.
Claim 24
Dependent Claim
19 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and 7-octadecylthio-1-naphthol as a coupler.
Claim 25
Dependent Claim
19 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and 7-octadecylsulfonyl-1-naphthol as a coupler.
Claim 26
Dependent Claim
19 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and 2-acetyl-7-octadecylsulfonyl-1-naphthol as a coupler.
Claim 27
Dependent Claim
22 words
A color photographic element comprising a support layer, at least one gelatino-silver halide emulsion and 2-( Delta butylcarbamyl 7-hexadecyl-1-naphthol as a coupler.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |