Patent US3785823A successfully refreshed from Google Patents.
US3785823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhedral haloboranes as developer adjuvants with a polyethylene oxide condensation product
Assignee: EIDP Inc
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Filing: 1972-03-27
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Granted: 1974-01-15
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Expires: 1992-03-27
Abstract
Abstract This invention relates to photographic films and developers and to improvement in film speed and top density which occurs by adding certain novel polyhedral haloborane compounds in synergistic combination with polyethylene oxide condenstaion products to the film-developer system. This invention also relates to improved developer tray life resulting from the use of these novel polyhedral haloboranes.
Inventors
- 👤 J Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:47
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/04; G03C1/043; G03C1/08; G03C1/10; G03C5/00; G03C5/26; G03C5/29; G03C5/305
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
19 words
The process of claim 1 wherein said developer contains, as the main developing agent, hydroquinone or a substituted hydroquinone.
Claim 2
Dependent Claim
15 words
The process of claim 2 in which said emulsion forms a layer on a support.
Claim 3
Dependent Claim
20 words
The process of claim 3 wherein said polyhedral haloborane and said polyethylene oxide condensation product are present within said emulsion.
Claim 4
Dependent Claim
27 words
The process of claim 4 wherein there is about 0.0025 to 2.0 grams of polyethylene oxide condensation product per 1.5 mole of silver halide in said emulsion.
Claim 5
Dependent Claim
25 words
The process of claim 3 wherein said polyethylene oxide condensation product is present within said emulsion and said polyhedral haloborane is present within said developer.
Claim 6
Dependent Claim
43 words
The process of claim 6 wherein said emulsion contains about 0.0025 to 2.0 grams of said polyethylene oxide condensation product per 1.5 moles of silver halide and said developer contains about 0.005 to 1.5 grams of said polyhedral haloborane per liter of developer.
Claim 7
Dependent Claim
40 words
The process of claim 7 wherein said emulsion contains about 0.01 to 1.3 grams of said polyethylene condensation product per 1.5 mole of silver halide and said developer contains about 0.1 to 0.5 gram per liter of said polyhedral haloborane.
Claim 8
Dependent Claim
27 words
The process of claim 3 wherein said silver halide is silver chloride, silver bromide, silver chloro-bromide, silver bromo-iodide, silver chloro-iodide, mixtures of silver chloro-iodide-bromide or litho combinations.
Claim 9
Dependent Claim
20 words
The process of claim 3 wherein said polyethylene oxide condensation product is octylphenoxypolyethoxy ethanol and said polyhedral haloborane is H2B12Cl12.7H2O.
Claim 10
Dependent Claim
58 words
In a developer for silver halide emulsions containing a polyethylene oxide condensation product, the improvement comprising the inclusion within said developer of a polyhedral haloborane, said polyhedral borane being a borane polyhedron, or fragments thereof, containing 10 to 12 boron atoms, and in which at least a majority of the hydrogen substituents have been replaced by halogen atoms.
Claim 11
Dependent Claim
18 words
The improvement of claim 11 wherein said developer contains, as the main developing agent, hydroquinone or substituted hydroquinones.
Claim 12
Dependent Claim
22 words
The improvement of claim 12 wherein said developer contains about 0.005 to 1.5 grams of said polyhedral borane per liter of developer.
Claim 13
Dependent Claim
22 words
The improvement of claim 13 wherein said developer contains about 0.1 to 0.5 grams of said polyhedral haloborane per liter of developer.
Claim 14
Dependent Claim
11 words
The process of claim 12 wherein said polyhedral haloborane is H2B12Cl12.7H2O.
Claim 15
Dependent Claim
23 words
In a silver halide emulsion the improvement comprising the inclusion within said emulsion of a polyhedral haloborane and a polyethylene oxide condensation product.
Claim 16
Dependent Claim
14 words
The improvement of claim 16 wherein said emulsion forms a film on a support.
Claim 17
Dependent Claim
26 words
The improvement of claim 17 wherein said emulsion contains about 0.0025 to 2.0 grams of said polyethylene oxide condensation product per 1.5 moles of silver halide.
Claim 18
Dependent Claim
26 words
The improvement of claim 18 wherein said emulsion contains about 0.01 to 1.3 grams of said polyethylene oxide condensation product per 1.5 moles of silver halide.
Claim 19
Dependent Claim
27 words
The improvement of claim 17 wherein said silver halide is silver chloride, silver bromide, silver chloro-bromide, silver bromo-iodide, silver chloro-iodide, mixtures of silver chloro-iodide-bromide or litho combinations.
Claim 20
Dependent Claim
20 words
The improvement of claim 17 wherein said polyethylene oxide condensation product is octylphenoxypolyethoxy ethanol and said polyhedral haloborane is H2B12Cl12.7H2O.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |