US5037732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing internally modified silver halide grains
Assignee: Eastman Kodak Co
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Filing: 1989-08-28
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Granted: 1991-08-06
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Expires: 2009-08-28
Abstract
Abstract Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal chosen from groups 8 and 9 of the periodic table of elements.
Inventors
- 👤 Woodrow G. McDugle
- 👤 Alfred P. Marchetti
- 👤 John E. Keevert
- 👤 Marian S. Henry
- 👤 Myra T. Olm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/035; G03C1/09
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
40 words
A photographic emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal selected from groups 8 and 9 of the periodic table of elements.
Claim 2
Dependent Claim
40 words
A photographic emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal selected from groups 8 and 9 of the periodic table of elements.
Claim 3
Dependent Claim
60 words
A photographic emulsion according to claim 1 further characterized in that said emulsion contains a hexacoordination complex that satisfies the formula: [M(CO).sub.m L.sub.6-m ].sup.n where M is a transition metal selected from groups 8 and 9 of the periodic table of elements; L is a bridging ligand; m is 1, 2, or 3; and n is -1, -2, or -3.
Claim 4
Dependent Claim
31 words
A photographic emulsion according to claim 1 further characterized in that the halide forming the grains is comprised of at least one of chloride and bromide optionally in combination with iodide.
Claim 5
Dependent Claim
30 words
A photographic emulsion according to claim 2 further characterized in that the hexacoordination complex is present in a concentration ranging form 10 -9 to 10 -4 mole per silver mole.
Claim 6
Dependent Claim
18 words
A photographic emulsion according to claim 2 further characterized in that M is a group 8 transition metal.
Claim 7
Dependent Claim
18 words
A photographic emulsion according to claim 2 further characterized in that M is a fifth period transition metal.
Claim 8
Dependent Claim
39 words
A photographic emulsion according to claim 5 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration sufficient to enhance the photographic imaging response of the emulsion to a surface developer following imagewise exposure.
Claim 9
Dependent Claim
40 words
A photographic emulsion according to claim 7 further characterized in that the bridging ligands are halide ligands and the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -9 to 10 -6 mole per silver mole.
Claim 10
Dependent Claim
33 words
A photographic emulsion according to claim 8 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -8 to 5×10 -7 mole per silver mole.
Claim 11
Dependent Claim
28 words
A photographic emulsion according to claim 6 further characterized in that the hexacoordination complex is incorporated in the grains in an amount sufficient to trap photogenerated electrons internally.
Claim 12
Dependent Claim
40 words
A photographic emulsion according to claim 10 further characterized in that the bridging ligands are halide ligands and the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -6 to 10 -4 mole per silver mole.
Claim 13
Dependent Claim
33 words
A photographic emulsion according to claim 11 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration ranging from 5×10 -6 to 5×10 -5 mole per silver mole.
Claim 14
Dependent Claim
18 words
A photographic emulsion according to claim 2 further characterized in that M is a sixth period transition metal.
Claim 15
Dependent Claim
14 words
A photographic emulsion according to claim 13 further characterized in that M is iridium.
Claim 16
Dependent Claim
39 words
A photographic emulsion according to claim 14 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration sufficient to enhance the photographic imaging response of the emulsion to a surface developer following imagewise exposure.
Claim 17
Dependent Claim
40 words
A photographic emulsion according to claim 15 further characterized in that the bridging ligands are halide ligands and the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -9 to 5×10 -7 mole per silver mole.
Claim 18
Dependent Claim
33 words
A photographic emulsion according to claim 16 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -8 to 10 -7 mole per silver mole.
Claim 19
Dependent Claim
28 words
A photographic emulsion according to claim 13 further characterized in that the hexacoordination complex is incorporated in the grains in an amount sufficient to trap photogenerated electrons internally.
Claim 20
Dependent Claim
30 words
A photographic emulsion according to claim 18 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -8 to 10 -4 .
Claim 21
Dependent Claim
33 words
A photographic emulsion according to claim 19 further characterized in that the hexacoordination complex is incorporated in the grains in a concentration ranging from 10 -7 to 10 -5 mole per silver mole.
Claim 22
Dependent Claim
65 words
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure interally containing from 10 -8 to 10 -4 mole per silver mole of a complex satisfying the formula: [M(CO).sub.m L.sub.6-m ].sup.n where M is ruthenium or osmium; L is a halide ligand; m is 1, 2, or 3; and n is -1, -2, or -3.
Claim 23
Dependent Claim
65 words
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure interally containing from 10 -8 to 10 -4 mole per silver mole of a complex satisfying the formula: [M(CO).sub.m L.sub.6-m ].sup.n where M is ruthenium or osmium; L is a halide ligand; m is 1, 2, or 3; and n is -1, -2, or -3.
Claim 24
Dependent Claim
46 words
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing from 10 -9 to 5×10 -5 mole per silver mole of a complex satisfying the formula: [Ir(CO)L.sub.5 ].sup.-2 where L is a halide ligand.
Claim 25
Dependent Claim
46 words
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing from 10 -9 to 5×10 -5 mole per silver mole of a complex satisfying the formula: [Ir(CO)L.sub.5 ].sup.-2 where L is a halide ligand.
Claim 26
Dependent Claim
22 words
A photographic emulsion according to any one of claims 1 to 12 inclusive further characterized in that the transition metal is ruthenium.
Claim 27
Dependent Claim
28 words
A photographic emulsion according to any one of claims 1 to 20 or 22 inclusive further characterized in that the silver halide grains are comprised of silver chloride.
Claim 28
Dependent Claim
33 words
A photographic emulsion according to any one of claims 1 to 20 or 22 inclusive further characterized in that the silver halide grains are comprised of silver bromide optionally in combination with iodide.
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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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |