Patents by Inventor Steven Evans
Steven Evans 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: 4948776Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is a chalcogenopyrylo-arylidene dye. In a preferred embodiment, the chalcogenopyrylo-arylidene dye has the following formula: ##STR1## wherein: R.sup.1 and R.sup.2 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any of R.sup.1 and R.sup.2 may be joined together or with an adjacent aromatic ring to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring;R.sup.3 and R.sup.6 each independently represents R.sup.1 or the atoms necessary to complete a 5- to 7-membered fused substituted or unsubstituted carbocyclic or heterocyclic ring;R.sup.4 and R.sup.Type: GrantFiled: June 16, 1989Date of Patent: August 14, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Charles D. DeBoer
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Patent number: 4948777Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is a bis(chalcogenopyrylo)polymethine dye. In a preferred embodiment, the bis(chalcogenopyrylo)polymethine dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any two of said R.sup.1, R.sup.2 and R.sup.3 groups may be joined together to form a 5- to 7-membered substituted or unsubstituted carboxyclic or heterocyclic ring; or R.sup.1 may be joined to Z.sup.1 to form a fused 5- or 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R.sup.3 may be joined to Z.sup.Type: GrantFiled: June 16, 1989Date of Patent: August 14, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Charles D. DeBoer
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Patent number: 4946825Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye having the formula ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a cycloalkyl group having from about 5 to about 7 carbon atoms or an aryl group having from about 6 to about 10 carbon atoms;R.sup.2 represents a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; NHR.sup.6 ; NR.sup.6 R.sup.7 or the atoms necessary to complete a 6-membered ring fused to the benzene ring;R.sup.3 and R.sup.4 each represents R.sup.1 ; or R.sup.3 and R.sup.4 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring; or either or both of R.sup.3 and R.sup.Type: GrantFiled: May 12, 1989Date of Patent: August 7, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4942141Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is a squarylium dye. In a preferred embodiment, the squarylium dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represents hydrogen, hydroxy, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any of said R.sup.1, R.sup.2, R.sup.3 or R.sup.4 groups may be combined with R.sup.5, R.sup.6, R.sup.7 or R.sup.8 or with each other to form a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring;R.sup.5, R.sup.6, R.sup.7 and R.sup.Type: GrantFiled: June 16, 1989Date of Patent: July 17, 1990Assignee: Eastman Kodak CompanyInventors: Charles D. DeBoer, Steven Evans
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Patent number: 4933226Abstract: A thermal print element comprising a support having thereon a layer containing a thermally-transferred dye image, the dye image comprising a magenta dye having the following formula: ##STR1## wherein: wherein R.sup.1 and R.sup.2 are each independently hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, or aryl group, or may be joined together to form a 5- or 6-membered, substituted or unsubstituted, heterocyclic ring system;R.sup.3 is a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms;R.sup.4 represents at least one electron withdrawing group; ##STR2## R.sup.5 is hydrogen, alkoxycarbonyl, cyano, halogen, carbamoyl, acyl, alkylsulfonyl, arylsulfonyl, sulfamoyl or alkyl, or may represent the atoms necessary to join with R.sup.Type: GrantFiled: December 11, 1989Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4891354Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye comprising a thiazolylmethylene-2-pyrazoline-5-one. In a preferred embodiment, the dye has the formula: ##STR1## wherein R.sup.1 represents hydrogen, a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms, a cycloalkyl group having from about 5 to about 7 carbon atoms, or a substituted or unsubstituted aryl or hetaryl group having from about 2 to about 10 carbon atoms;R.sup.2 represents an alkoxy group having from 1 to about 10 carbon atoms or a primary, secondary or tertiary amino group;R.sup.3 and R.sup.4 each represents R.sup.1, with the proviso that only one of R.sup.3 and R.sup.4 may be hydrogen, or R.sup.3 and R.sup.4 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;R.sup.5 and R.sup.Type: GrantFiled: December 23, 1988Date of Patent: January 2, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4891353Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye comprising a thiazolylmethylene-3,5-pyrazolidinedione. In a preferred embodiment, the dye has the formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently represents hydrogen a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms, a cycloalkyl group having from about 5 to about 7 carbon atoms, a substituted or unsubstituted aryl or hetaryl group having from about 2 to about 10 carbon atoms, or R.sup.1 and R.sup.2 can be joined together to form, along with the nitrogens to which they are attached, a 5- or 6-membered heterocyclic ring;R.sup.3 and R.sup.4 each represents R.sup.1 and R.sup.2, respectively, with the proviso that only one of R.sup.3 and R.sup.4 may be hydrogen; andR.sup.5 and R.sup.Type: GrantFiled: December 23, 1988Date of Patent: January 2, 1990Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4866029Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye having the formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a cycloalkyl group having from about 5 to about 7 carbon atoms or an aryl group having from about 6 to about 10 carbon atoms;R.sup.2 represents a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; NHR.sup.6 ; NR.sup.6 R.sup.7 or the atoms necessary to complete a 6-membered ring fused to the benzene ring;R.sup.3 and R.sup.4 each represents R.sup.1 ; or R.sup.3 and R.sup.4 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;R.sup.Type: GrantFiled: January 30, 1989Date of Patent: September 12, 1989Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4853366Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dipersed in a polymeric binder, the dye having the formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms, a cycloalkyl group having from about 5 to about 7 carbon atoms or an aryl group having from about 6 to about 10 carbon atoms;R.sup.3 and R.sup.4 each represents R.sup.1 ; or either or both of R.sup.3 and R.sup.4 can be joined to the carbon atom of the aromatic ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring; or R.sup.3 and R.sup.4 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;R.sup.Type: GrantFiled: January 30, 1989Date of Patent: August 1, 1989Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber, Donald R. Diehl
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Patent number: 4839336Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye having the formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a cycloalkyl group having from about 5 to about 7 carbon atoms or an aryl group having from about 6 to about 10 carbon atoms;R.sup.2 represents a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; NHR.sup.5 ; or NR.sup.5 R.sup.6 ;R.sup.3 and R.sup.4 each represents R.sup.1 ; or either or both of R.sup.3 and R.sup.4 can be joined to the carbon atom of the aromatic ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring; or R.sup.3 and R.sup.4 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;R.sup.5 and R.Type: GrantFiled: March 16, 1988Date of Patent: June 13, 1989Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4769360Abstract: A cyan dye-donor element for thermal dye transfer comprises a support having thereon a dye of cyan hue dispersed in a polymeric binder, the dye having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are substituted or unsubstituted alkyl, cycloalkyl or aryl;R.sup.3 and R.sup.4 are hydrogen, substituted or unsubstituted alkyl, halogen, --NHCOR.sup.1 or --NHSO.sub.2 R.sup.1 ; andJ is --C.tbd.N, --Cl, --NHCOR.sup.1, --NHCO.sub.2 R.sup.1, --NHCONHR.sup.1, --NHCON(R.sup.1).sub.2, --SO.sub.2 NHR.sup.1, --NHSO.sub.2 R.sup.Type: GrantFiled: September 14, 1987Date of Patent: September 6, 1988Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4743582Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a 3-(N-alkyl- or N-aryl-amino)-2-pyrazolin-5-one merocyanine dye dispersed in a polymeric binder, the merocyanine dye being capable of transfer by diffusion to a dye-receiving element upon the application of heat and being incapable of substantial photolysis, the merocyanine dye being substituted or unsubstituted on the bridging methine carbon atoms.In a preferred embodiment, the merocyanine dye has the formula: ##STR1## wherein: R represents a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms;R.sup.1 and R.sup.2 each independently represents hydrogen, with the proviso that only one of R.sup.1 and R.sup.2 may be hydrogen at the same time; a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or R.sup.1 and R.sup.Type: GrantFiled: June 8, 1987Date of Patent: May 10, 1988Assignee: Eastman Kodak CompanyInventors: Steven Evans, Helmut Weber
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Patent number: 4738950Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising a lubricating material dispersed in a polymeric binder, the lubricating material comprising a linear or branched aminoalkyl-terminated poly(dialkyl, diaryl or alkylaryl siloxane) such as an aminopropyldimethyl-terminated polydimethylsiloxane or a T-structure polydimethylsiloxane with an aminoalkyl functionality at the branchpoint.Type: GrantFiled: June 16, 1987Date of Patent: April 19, 1988Assignee: Eastman Kodak CompanyInventors: Noel R. Vanier, Steven Evans
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Patent number: 4737457Abstract: An analytical method for the determination of hydrogen peroxide utilizes a hydrazide or a hydrazine substituted with one or more electron withdrawing groups. The hydrazides or hydrazines react with phenolic color couplers in the presence of hydrogen peroxide and a peroxidative compound to form a dye detectable at a wavelength of 600 nm or greater. These materials can also be used to assay analytes, such as glucose and cholesterol, which can react to produce hydrogen peroxide.Type: GrantFiled: February 26, 1986Date of Patent: April 12, 1988Assignee: Eastman Kodak CompanyInventors: Steven Evans, John W. Sutherland
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Patent number: 4695287Abstract: A cyan dye-donor element for thermal dye transfer comprises a support having thereon a cyan dye dispersed in a polymeric binder, the cyan dye comprising a 2-carbamoyl-4-[N-(p-substituted aminoaryl)imino]-1,4-naphthoquinone.In a preferred embodiment, the cyan dye has the formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.5 are substituted or unsubstituted alkyl, cycloalkyl, or aryl; andR.sup.3 and R.sup.4 are hydrogen; substituted or unsubstituted alkyl; halogen; --NHCOR.sup.1 or --NHSO.sub.2 R.sup.1.Type: GrantFiled: September 26, 1986Date of Patent: September 22, 1987Assignee: Eastman Kodak CompanyInventors: Steven Evans, Kin K. Lum
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Patent number: 4495099Abstract: Nondiffusible compounds capable of releasing at least one diffusible magenta dye moiety having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;(b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring;(c) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(d) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.Type: GrantFiled: June 15, 1983Date of Patent: January 22, 1985Assignee: Eastman Kodak CompanyInventors: Steven Evans, James K. Elwood
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Patent number: 4481141Abstract: Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound having a releasable yellow dye moiety or precursor thereof, the compound having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring;(b) Z represents alkyl, substituted alkyl, aryl or substituted aryl;(c) R represents CN or J-L;(d) J represents a bivalent ##STR2## (e) L represents alkyl, substituted alkyl, aryl, substituted aryl, or can be taken together with Z to complete a carbonyl-containing 5- or 6-membered heterocyclic or carbocyclic ring;(f) Z.sup.Type: GrantFiled: April 14, 1983Date of Patent: November 6, 1984Assignee: Eastman Kodak CompanyInventor: Steven Evans
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Patent number: 4436799Abstract: Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible magenta dye moiety comprising a 4-(2-heterocyclylazo)phenol having a heterocyclic ring fused thereto, the compound having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;(b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring;(c) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(d) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.Type: GrantFiled: June 15, 1983Date of Patent: March 13, 1984Assignee: Eastman Kodak CompanyInventors: Steven Evans, James K. Elwood
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Patent number: 4420550Abstract: Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible magenta dye moiety comprising a 4-(2-heterocyclylazo)phenol having a heterocyclic ring fused thereto, the compound having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;(b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring;(c) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(d) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.Type: GrantFiled: January 17, 1983Date of Patent: December 13, 1983Assignee: Eastman Kodak CompanyInventors: Steven Evans, James K. Elwood
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Patent number: 4418131Abstract: Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound having a releasable yellow dye moiety or precursor thereof, the compound having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring;(b) Z represents alkyl, substituted alkyl, aryl or substituted aryl;(c) R represents CN or J-L;(d) J represents a bivalent ##STR2## (e) L represents alkyl, substituted alkyl, aryl, substituted aryl, or can be taken together with Z to complete a carbonyl-containing 5- or 6-membered heterocyclic or carbocyclic ring;(f) Z.sup.Type: GrantFiled: April 14, 1983Date of Patent: November 29, 1983Assignee: Eastman Kodak CompanyInventor: Steven Evans