US4119462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic developer composition
Assignee: United States Department of the Army
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Filing: 1977-05-24
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Granted: 1978-10-10
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Expires: 1997-05-24
Abstract
Abstract A color photographic developer composition is provided that is capable of celerating the process of development of multicolor, multilayer color film under actual processing conditions by including in the developer composition about 0.5 to 1.0 percent by volume of the composition of 2-anilinoethanol.
Inventors
- 👤 Harvey A. Hodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C7/00; G03C7/30; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
In a color photographic developer composition containing a substituted paraphenylenediamine as the color developing agent, the improvement of adding about 0.5 to 1.0 percent by volume of 2-anilinoethanol to the developer composition.
Claim 2
Dependent Claim
32 words
In a color photographic developer composition containing a substituted paraphenylenediamine as the color developing agent, the improvement of adding about 0.5 to 1.0 percent by volume of 2-anilinoethanol to the developer composition.
Claim 3
Dependent Claim
23 words
An improved color photographic developer composition according to claim 1 in which β-methanesulphonamidoethyl ethyl amino toluidine sesquisulfate hydrate is the color developing agent.
Claim 4
Dependent Claim
60 words
An improved color photographic developer composition according to claim 1 consisting of the following ingredients: ______________________________________
methanesulphonamidoethyl ethyl amino
toluidine sesquisulfate hydrate
grams 7.5
Na.sub.2 SO.sub.3 grams 2.0
Benzyl Alcohol millimeters
5.0
NaOH grams 15.0
Na.sub.2 B.sub.4 O.sub.7 . H.sub.2 O
grams 60.0
KBr grams 1.5
2-anilinoethanol millimeters
10.0
Water to make 1 liter
pH is adjusted to 11.5
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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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |