Patents by Inventor Richard L. Parton
Richard L. Parton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6140035Abstract: A photographic element comprises at least one silver halide emulsion layer in which:a) the silver halide has been spectrally sensitized with a first blue sensitizing dye having a .lambda..sub.1 less than or equal to about 475 nm and a second blue sensitizing dye having a .lambda..sub.2, wherein the following relationship is met: ##EQU1## wherein .lambda..sub.1 is the wavelength in nanometers (nm) of maximum absorption of a silver halide emulsion sensitized with the first dye and .lambda..sub.2 is the wavelength of maximum absorption of a silver halide emulsion sensitized with the second dye, with the proviso that neither the first nor the second dye contains selenium. The silver halide emulsion of said layer is chemically sensitized with a gold(I) compound and preferably with the combination of a gold compound and a disulfide compound; andb) the silver halide has been chemically sensitized with a gold compound of formula (I):AuL.sub.2 +X.sup.- or AuL(L.sup.1)+X.sup.Type: GrantFiled: September 10, 1998Date of Patent: October 31, 2000Assignee: Eastman Kodak CompanyInventors: Karen J. Klingman, Bruce E. Kahn, Richard L. Parton, Thomas R. Dobles, David A. Stegman, Teresa A. Smith, John D. Lewis
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Patent number: 5597687Abstract: A supersensitizing dye combination for silver halide photographic materials is disclosed. The combination is of a first dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,each L independently represents a substituted or unsubstituted methine group,n is a positive integer of from 1 to 4,p and q each independently represents 0 or 1,X represents a cation as needed to balance the charge of the molecule,A and A' each independently represents a divalent linking group such that at least one of H--A--SO.sub.3 H and H--A'--SO.sub.3 H would each have a log P value that is more negative than -0.3, anda second dye, having an oxidation potential that is at least about 0.08 volts less positive than the oxidation potential of the first dye and a reduction potential that is equal to or more negative than the reduction potential of the first dye, according to the formula: ##STR2## Z.sub.3 and Z.sub.Type: GrantFiled: October 19, 1995Date of Patent: January 28, 1997Assignee: Eastman Kodak CompanyInventors: Thomas R. Dobles, David A. DuMont, Paul B. Gilman, Sang H. Kim, Steven G. Link, Richard L. Parton
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Patent number: 5576173Abstract: A silver halide photographic element comprising a silver halide emulsion layer sensitized with a sensitizing dye of formula (I) which provides a maximum sensitivity at greater than 700 nm and which emulsion layer has substantially no dye deaggregating compound therein: ##STR1## wherein: X.sub.1 and X.sub.2 are independently sulfur, selenium or oxygen provided that X.sub.1 and X.sub.2 are not both oxygen and either benzo ring may be substituted or unsubstituted;R.sub.1 and R.sub.2 each independently represent an alkyl, aryl or heterocyclic group provided that at least one of R.sub.1 or R.sub.2 has an acid or acid salt substituent;A is a counterion as needed to balance the charge.Type: GrantFiled: July 13, 1995Date of Patent: November 19, 1996Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Anthony Adin
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Patent number: 5518876Abstract: A photographic materials with a high silver chloride red sensitive layer which has a high sensitivity and exhibits reduced thermal sensitivity. In particular the material has a silver halide emulsion of at least 90% silver chloride and compounds of formula I and II below: ##STR1## Where A, Z, X1, X2, R1, R2, W1-W12, D, G1, G2, Y1, Y2 are as defined in the specification.Type: GrantFiled: March 29, 1995Date of Patent: May 21, 1996Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, David A. Stegman, Pamela M. Ferguson
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Patent number: 5516628Abstract: A photographic element with a silver halide emulsion having a maximum sensitivity in the visible region at less than 480 nm and being sensitized by a dye of formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represent S, Se or O; R.sub.1 and R.sub.2 are, independently, an alkyl group; Z represents an aromatic group or heteroaromatic group that is directly appended to the benzene ring shown or is attached through a linking group provided that the atoms of the linking group are sp.sup.2 hybridized, or Z can be a fused aromatic ring group; the benzene rings shown can be further substituted or unsubstituted, and; A' is one or more ions as needed to balance the charge on the molecule.Type: GrantFiled: April 26, 1995Date of Patent: May 14, 1996Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, David A. Stegman, Kevin W. Williams, Vishwakarma L. Chand
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Patent number: 5512103Abstract: The invention provides a cyan color producing silver halide emulsion layer or a magenta color producing silver halide emulsion layer wherein said at least one layer has an exposure range of at least 0.6 log E from the point where the instantaneous contrast is 1.0 and wherein the instantaneous contrast of said layer increases as a function of increasing exposure over at least 70 percent of said exposure range.Type: GrantFiled: January 19, 1995Date of Patent: April 30, 1996Assignee: Eastman Kodak CompanyInventors: James L. Edwards, Eric L. Bell, Benjamin T. Chen, Richard L. Parton
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Patent number: 5492802Abstract: A silver halide photographic element comprising a sensitizing dye of the formula: ##STR1## wherein: X1, X2, n, L, L2, R1 and R2 are as defined in the specification;Z1 represents Ar1-(L1) m, where Ar1 is a substituted or unsubstituted aromatic group, L1 is a linking group, m is 0 or 1, and the LOGP(A) of a molecule having a structure A corresponding to a portion of the dye ##STR2## is no more than 90% of LOGP(A'), where A' is the same as A except Z1 is replaced with unsubstituted phenyl, provided that L1 is not --CO-- when X1 or X2 is S or Se; andW1 is a counterion as needed to balance the charge of the molecule.Type: GrantFiled: May 20, 1994Date of Patent: February 20, 1996Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, David A. Stegman
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Patent number: 5445913Abstract: The invention is directed to a process for forming a chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element comprising the steps of: providing, separately, a melt comprising a spectrally dye-sensitized silver halide emulsion and a dry diffusion transfer facilitating thermal solvent; mixing said spectrally dye sensitized silver halide emulsion melt and said dry diffusion transfer facilitating thermal solvent with a mixing means to create a mixed melt; providing a coating substrate; coating said mixed melt on said substrate to form a coated photographic element, wherein said coating takes place less than about 10 minutes after mixing.The heat-transferable photographic element thus formed has improved photographic sensitivity and increased sensitometric uniformity.Type: GrantFiled: February 25, 1994Date of Patent: August 29, 1995Assignee: Eastman Kodak CompanyInventors: David S. Bailey, Richard L. Parton
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Patent number: 5418118Abstract: The invention provides a cyan color producing silver halide emulsion layer or a magenta color producing silver halide emulsion layer wherein said at least one layer has an exposure range of at least 0.6 log E from the point where the instantaneous contrast is 1.0 and wherein the instantaneous contrast of said layer increases as a function of increasing exposure over at least 70 percent of said exposure range.Type: GrantFiled: February 18, 1994Date of Patent: May 23, 1995Assignee: Eastman Kodak CompanyInventors: James L. Edwards, Eric L. Bell, Benjamin T. Chen, Richard L. Parton
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Patent number: 5418126Abstract: Spectral sensitizing dyes, and silver halide photographic elements incorporating them, which dyes have the formula: ##STR1## wherein: X1 and X2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus (preferably benzo-condensed), and X1 may be further substituted and X2 substituted or unsubstituted;n is a positive integer from 1 to 4,p and q each independently represents 0 or 1,each L independently represents a substituted or unsubstituted methine group,R1 and R2 each independently represents substituted or unsubstituted aryl or substituted or unsubstituted alkyl,Z1 represents a substituted or unsubstituted pyrrole or furan containing group;W1 is a counterion as needed to balance the charge of the molecule.Type: GrantFiled: January 19, 1994Date of Patent: May 23, 1995Assignee: Eastman Kodak CompanyInventors: David A. Stegman, Richard L. Parton, Steven G. Link, Pamela M. Ferguson
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Patent number: 5354651Abstract: Spectral sensitizing dyes, and silver halide photographic elements incorporating them, which dyes have the formula: ##STR1## wherein: X1 and X2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus, wherein X1 may be further substituted and X2 may be substituted or unsubstituted;n is a positive integer from 1 to 4;p and q each independently represents 0 or l,each L independently represents a substituted or unsubstituted methine group,R1 and R2 each independently represents substituted or unsubstituted aryl or substituted or unsubstituted aliphatic groups;Z1 represents a substituent containing an hydroxyarylacyl group (preferably an .alpha.-hydroxyarylacyl group), an aromatic ring of which may be appended or fused to X1; andW1 is a counterion as needed to balance the charge of the molecule.Type: GrantFiled: November 19, 1992Date of Patent: October 11, 1994Assignee: Eastman Kodak CompanyInventor: Richard L. Parton
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Patent number: 5316904Abstract: Dyes and photographic elements containing them as silver halide sensitizing dyes, which dyes have the structure: ##STR1## wherein: X1 and X2 each independently represent the atoms necessary to complete a benzo-condensed 5- or 6-membered heterocyclic nucleus, which, in addition to being substituted by Z1 and Z2 respectively, may be further substituted or unsubstituted;n is a positive integer from 1 to 4,p and q each independently represents 0 or 1,each L independently represents a substituted or unsubstituted methine group,R1 and R2 each independently represents substituted or unsubstituted aryl or substituted or unsubstituted alkyl,Z1 represents a substituent which contains both an amide group and an aromatic ring which may be appended or fused to X1; andW1 is a counterion as needed to balance the charge of the molecule.Type: GrantFiled: November 19, 1992Date of Patent: May 31, 1994Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, David A. Stegman, Frederick J. Sauter
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Patent number: 5298379Abstract: A radiation detecting element, particularly a photographic element having a radiation detecting composition, in particular a silver halide emulsion. The composition provides the element with a wavelength of peak sensitivity, .lambda.peaksens, and a decreasing sensitivity around .lambda.peaksens. An absorber dye of defined characteristics is chosen, which has the effect of decreasing the change in sensitivity which the element otherwise has without the absorber dye (that is, the absorber dye increases the wavelength range over which the sensitivity is relatively constant). The element is preferably sensitive to infra-red.Type: GrantFiled: June 30, 1992Date of Patent: March 29, 1994Assignee: Eastman Kodak CompanyInventors: Anthony Adin, Richard L. Parton
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Patent number: 5135845Abstract: Sensitizing dyes for photographic materials are disclosed. The dyes have the formula: ##STR1## Z.sub.1 represents the atoms necessary to complete a benzoxazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzotellurazole nucleus, or a benzimidazole nucleus, which, in addition to being substituted by R.sub.3, may be further substituted or unsubstituted,Z.sub.2 represents the atoms necessary to complete a benzoxazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzotellurazole nucleus, or a benzimidazole nucleus, which, in addition to being substituted by F, may be further substituted or unsubstituted,R represents H or substituted or unsubstituted alkyl or aryl,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or aryl,R.sub.3 represents an aryl group that may be appended to or fused with Z.sub.1, andX is a counterion as needed to balance the charge of the molecule.Type: GrantFiled: April 10, 1990Date of Patent: August 4, 1992Assignee: Eastman Kodak CompanyInventors: Gladys L. MacIntyre, Richard L. Parton, Wayne W. Weber, II
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Patent number: 5108882Abstract: A photographic element is described comprising a support having thereon(a) a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl, andR.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl,X represents a counterion, and(b) at least one other red- or infrared-sensitive silver halide emulsion layer having a maximum sensitivity at a wavelength different from that of the (a) layer.Type: GrantFiled: September 26, 1989Date of Patent: April 28, 1992Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Annabel A. Muenter, Anthony Adin
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Patent number: 5091298Abstract: Dyes according to formulas (I), (II), (III), (IV), and (V) below are described. The dyes are useful as low-staining sensitizing dyes for photographic materials. ##STR1## Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, L, D, G, X, n, P, and q are defined herein.Type: GrantFiled: July 19, 1990Date of Patent: February 25, 1992Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Steven G. Link, David A. Stegman, John D. Mee
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Patent number: 5061618Abstract: A photographic element is described comprising a support having thereon a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## wherein where Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and X are as defined herein.Type: GrantFiled: March 28, 1990Date of Patent: October 29, 1991Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Annabel A. Muenter, David A. Stegman
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Patent number: 5013642Abstract: A photographic element is disclosed comprising a support having thereon a silver halide emulsion layer spectrally sensitized with(a) a first sensitizing dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, andX represents a counterion, and(b) a second sensitizing dye having a maximum sensitivity at a wavelength of about 5 to 100 nm less than the wavelength of maximum sensitivity of the first sensitizing dye.Type: GrantFiled: November 15, 1989Date of Patent: May 7, 1991Assignee: Eastman Kodak CompanyInventors: Annabel Muenter, Anthony Adin, Richard L. Parton, Nicholas A. Pightling, David Beaumond
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Patent number: 4975362Abstract: A photographic element is described comprising a support having thereon a silver halide emulsion layer comprising silver halide sensitized with a dye of the formula: ##STR1## wherein L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8, and L.sub.9 each independently represents a substituted or unsubstituted methine group,Z.sub.1 represents the atoms necessary to complete a benzothiazole nucleus, a benzoxazole nucleus, a benzoselenazole nucleus, a benzotellurazole nucleus, or a benzimidazole nucleus, which, in addition to being substituted by --SR.sub.3, is further substituted or unsubstituted.Z.sub.2 represents the atoms necessry to complete a substituted or unsubstituted 5- or 6-membered heterocyclic ring.R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.3 represents substituted or unsubstituted alkyl of from 1 to 4 carbon atoms.m is 1 or 2,n is 0 or 1, andX is a counterion.Type: GrantFiled: September 26, 1989Date of Patent: December 4, 1990Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Annabel A. Muenter, David A. Stegman
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Patent number: 4933269Abstract: A infrared absorbing filter dye that also imparts a cool image tone after processing is disclosed for use in photographic elements. The dye has the formula: ##STR1## where Z and Z' each independently represents the atoms necessary to complete a substituted or unsubstituted: thiazole nucleus, selenazole nucleus, indole nucleus, imidazole nucleus, or quinoline nucleus,R.sub.1 and R.sub.2 each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl,Z" represents the atoms necessary to complete a substituted or unsubstituted heterocyclic ring,Q represents the atoms necessary to complete a substituted or unsubstituted carbocyclic ring,m and n each independently represents 0 or 1, andX represents a counterion as needed to balance the charge of the molecule.Type: GrantFiled: November 27, 1989Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, David A. Stegman, Ralph W. Jones, Jr.