US3607290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer-containing silver halide photographic emulsions, preparation thereof and photographic elements produced therefrom
Assignee: 3M Co
•
Filing: 1969-01-03
•
Granted: 1971-09-21
•
Expires: 1989-01-03
Abstract
Abstract Silver halide photographic emulsions containing a waterinsoluble latex of an alkoxyalkyl acrylate polymer are shown, together with a process for preparing such emulsions and photographic elements produced therefrom.
Inventors
- 👤 Louis Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
27 words
The silver halide photographic emulsion of claim 1 having not greater than about 100 grams of said polymer per gram mole of silver in said silver halide.
Claim 2
Dependent Claim
13 words
The silver halide photographic emulsion of claim 1 wheRein said polymer is poly(ethoxyethyl)methacrylate.
Claim 3
Dependent Claim
13 words
The silver halide photographic emulsion of claim 1 wherein said polymer is poly(ethoxyethyl)acrylate.
Claim 4
Dependent Claim
13 words
The silver halide photographic emulsion of claim 1 wherein said polymer is poly(butoxyethyl)methacrylate.
Claim 5
Dependent Claim
13 words
The silver halide photographic emulsion of claim 1 wherein said polymer is poly(hexoxyethyl)methacrylate.
Claim 6
Dependent Claim
13 words
The silver halide photographic emulsion of claim 1 wherein said polymer is poly(butoxyethyl)acrylate.
Claim 7
Dependent Claim
28 words
A silver halide photographic element comprising base and at least one layer containing silver halide and a water-insoluble latex of a polymer having repeating groups of the formula
Claim 8
Dependent Claim
25 words
The photographic element of claim 8 wherein the ratio of polymer to silver in said silver halide is not greater than about 100 grams/gram mole.
Claim 9
Dependent Claim
11 words
The photographic element of claim 8 wherein said polymer is poly(ethoxyethyl)methacrylate.
Claim 10
Dependent Claim
11 words
The photographic element of claim 8 wherein said polymer is poly(ethoxyethyl)acrylate.
Claim 11
Dependent Claim
11 words
The photographic element of claim 8 wherein said polymer is poly(butoxyethyl)methacrylate.
Claim 12
Dependent Claim
11 words
The photographic element of claim 8 wherein said polymer is poly(exoxyethyl)methacrylate.
Claim 13
Dependent Claim
11 words
The photographic element of claim 8 wherein said polymer is poly(butoxyethyl)acrylate.
Claim 14
Dependent Claim
28 words
In the process for producing a ripened, digested silver halide-gelatin photographic emulsion, the improvement comprising adding to the emulsion a water-insoluble latex having repeating groups of the formula
Claim 15
Dependent Claim
17 words
The process of claim 15 wherein said latex is added after said emulsion is ripened and digested.
Claim 16
Dependent Claim
25 words
The process of claim 15 wherein not greater than about 100 grams of polymer is provided per gram mole of silver in said silver halide.
References Cited (Backward Citations)
US3436220A
Cited
US3436222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |