US3713829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light sensitive material containing copolymer layer
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-09-30
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Granted: 1973-01-30
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Expires: 1991-09-30
Abstract
Abstract A light-sensitive photographic material having at least one layer containing a copolymer represented by the general formula: WHEREIN R1 and R3 can be H or CH3, R2 can be an alkyl group having one to three carbon atoms, x and y represent positive integers, and Z represents one of: WHERE N IS 1-3, EXHIBITS REDUCED CURLING UPON EXPOSURE TO MOISTURE.
Inventors
- 👤 F Nishio
- 👤 D Nishio
- 👤 Y Nakajima
- 👤 S Watarai
- 👤 K Ohkubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; G03C1/043; Y; Y10; Y10S; Y10S430/00; Y10S430/131
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
52 words
A light-sensitive photographic material illustrating a reduced curling tendency comprising a support, at least one photographic silver halide emulsion layer and at least one subsidiary layer, at least one of said emulsion layer and subsidiary layer containing one member selected from the group consisting of the copolymer represented by the general formula,
Claim 2
Dependent Claim
52 words
A light-sensitive photographic material illustrating a reduced curling tendency comprising a support, at least one photographic silver halide emulsion layer and at least one subsidiary layer, at least one of said emulsion layer and subsidiary layer containing one member selected from the group consisting of the copolymer represented by the general formula,
Claim 3
Dependent Claim
14 words
The photographic light-sensitive material according to claim 1, wherein said support comprises a film.
Claim 4
Dependent Claim
14 words
The photographic light-sensitive material according to claim 1, wherein said support comprises a paper.
Claim 5
Dependent Claim
23 words
The photographic light-sensitive material according to claim 1, wherein the intrinsic viscosity of said copolymer in methanol at 35*C. is less than 2.0.
Claim 6
Dependent Claim
43 words
The photographic light-sensitive material according to claim 1 wherein the layer containing said copolymer is a silver halide emulsion layer and wherein the proportion of the copolymer is 3-50 percent by weight, based on the whole medium in said silver halide emulsion layer.
Claim 7
Dependent Claim
13 words
The photographic element of claim 5 where the proportion is 10- 30 percent.
Claim 8
Dependent Claim
39 words
The photographic light-sensitive material according to claim 1 wherein the layer containing said copolymer is a subsidiary layer and the proportion of the copolymer is 3- 50 percent by weight based on the whole medium of the subsidiary layer.
Claim 9
Dependent Claim
13 words
The photographic element of claim 7 where the proportion is 10- 30 percent.
Claim 10
Dependent Claim
11 words
The photographic light-sensitive material according to claim 1 wherein Z is
Claim 11
Dependent Claim
11 words
The photographic light-sensitive material according to claim 1 wherein Z is
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |