US3637394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements containing synthetic polymeric vehicles
Assignee: Eastman Kodak Co
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Filing: 1968-04-22
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Granted: 1972-01-25
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Expires: 1988-04-22
Abstract
Abstract Novel synthetic polymers derived from poly(vinyl alcohol) useful as hardenable gelatin replacements in compositions, photographic emulsions and elements, and a process for preparing said polymers are disclosed.
Inventors
- 👤 Donald Arthur Smith
- 👤 Donald M Copenhagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:56
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043; G03C1/50; C08F2810/00; C08F2810/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
A light-sensitive emulsion of claim 1 sensitized with a noble metal.
Claim 2
Dependent Claim
14 words
A light-sensitive emulsion of claim 1 in which the light-sensitive material is silver halide.
Claim 3
Dependent Claim
27 words
A light-sensitive element comprising a support and at least one layer having a binding agent comprising a hardenable poly(vinyl alcohol) polymer comprising recurring units having the formula:
Claim 4
Dependent Claim
45 words
A photographic element of claim 4 having a layer in which said binding agent comprises about 50 to about 95 percent, by weight, of a polymer of claim 1 with about 5 to about 50 percent, by weight, of at least one hardenable compatible compound.
Claim 5
Dependent Claim
31 words
A gelatin silver halide layer comprising a binding agent containing more than 0 percent to about 95 percent, by weight, of a poly(vinyl alcohol) polymer comprising recurring units having the formula:
Claim 6
Dependent Claim
9 words
A noble metal-sensitized gelatin-silver halide layer of claim 6.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |