US5077187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements silver halide containing a specific polymer and water soluble dye layer
Assignee: Eastman Kodak Co
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Filing: 1990-10-04
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Granted: 1991-12-31
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Expires: 2010-10-04
Abstract
Abstract Polymers comprising recurring units represented by the structure: <IMAGE> where R1, R2, D, J, Y, a, b, and c are as defined herein are useful for controlling wandering of filter dyes in photographic elements.
Inventors
- 👤 Ronda E. Factor
- 👤 Ignazio S. Ponticello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/835; C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/60; G03C8/00; G03C8/42; G03C8/52; G03C8/56; C08F220/10; C08F220/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A photographic element comprising a support, a radiation-sensitive silver halide layer, a layer comprising a water-soluble dye and, between the silver halide layer and the dye layer, a layer comprising a polymer is selected from the group consisting of poly(n-butyl methacrylate-co-2-aminoethyl methacrylate-hydrochloride-co-2-hydroxyethyl methacrylate (50/15/35); poly(n-butyl methacrylate-co-3-aminopropyl methacrylamide hydrochloride-co-2-hydroxy-ethyl methacrylate (50/30/20); poly(n-butyl methacrylate-co-2-dimethyl-aminoethyl methacrylate-co-hydroxyethyl methacrylate (15/51/34); and poly(n-butyl methacrylate-co-3-dimethyl-propyl methacrylamide-co-2-hydroxyethyl methacrylate (35/39/26).
Claim 2
Dependent Claim
61 words
A photographic element comprising a support, a radiation-sensitive silver halide layer, a layer comprising a water-soluble dye and, between the silver halide layer and the dye layer, a layer comprising a polymer is selected from the group consisting of poly(n-butyl methacrylate-co-2-aminoethyl methacrylate-hydrochloride-co-2-hydroxyethyl methacrylate (50/15/35); poly(n-butyl methacrylate-co-3-aminopropyl methacrylamide hydrochloride-co-2-hydroxy-ethyl methacrylate (50/30/20); poly(n-butyl methacrylate-co-2-dimethyl-aminoethyl methacrylate-co-hydroxyethyl methacrylate (15/51/34); and poly(n-butyl methacrylate-co-3-dimethyl-propyl methacrylamide-co-2-hydroxyethyl methacrylate (35/39/26).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |