Patents Represented by Attorney, Agent or Law Firm Edith A. Rice
  • Filter dyes for photographic elements
    Patent number: 5834173
    Abstract: A photographic element contains a dye of Formula (I): ##STR1## wherein G represents O or dicyanovinyl (--C(CN).sub.2); E.sup.1 represents an electron withdrawing group; R.sup.1 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted hetereoaryl group; L.sup.1, L.sup.2 and L.sup.3 each independently represent substituted or unsubstituted methine groups; Z represents non-metal atoms which may be assembled to form a five- or six-membered heterocyclic ring other than furan; and n represents 0 or 1; and wherein the dye comprises at least one ionizable group with a pKa value between 4 and 12.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: November 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Margaret Jones Helber, Donald Richard Diehl, Terrence Robert O'Toole
  • 1,2,4-triazole-releasing pyrazolone DIR couplers
    Patent number: 5821043
    Abstract: This invention provides a photographic element comprising a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I: ##STR1## wherein: the R.sub.1 substituents are individually selected from halogen atoms and alkyl, phenyl, alkoxy, phenoxy, alkylthio, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, and aryloxycarbonyl groups;n is 0 to 5;R.sub.2 is an alkyl group or a phenyl group; andR.sub.3 is an alkylthio group, an arylthio group, an alkoxycarbonyl group or an aryloxycarbonyl group.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: October 13, 1998
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, David A. Steele, Jerrold N. Poslusny
  • Benzotriazole-based novel UV absorbers and photographic elements containing them
    Patent number: 5814438
    Abstract: An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: ##STR1## wherein: R.sub.1 -R.sub.4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R.sub.2 or R.sub.3, or both R.sub.2 and R.sub.3 are other than hydrogen;A* is a group having a carbon atom directly attached to 2'-hydroxyphenyl ring at the 5'-position which contains at least one asymmetric carbon atom or an asymmetric silicon atom, and;wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: September 29, 1998
    Assignee: Eastman Kodak Company
    Inventors: Lal C. Vishwakarma, Glenn M. Brown, Barry F. Briffa
  • Thermally processable imaging element having a crosslinked hydrophobic binder
    Patent number: 5804365
    Abstract: A thermally processable imaging element comprises a support bearing an imaging layer comprising a hydrophobic binder and a boron compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and are selected from substituted or unsubstituted alkyl groups, and substituted or unsubstituted aryl groups.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Ralph B. Nielsen, Ronald Di Felice, Gordon D. Young
  • Hardening a hydrophilic colloid composition
    Patent number: 5800977
    Abstract: A hydrophilic colloid is hardened with a vinyl-sulfone hardener in the presence of a borate compound in an amount sufficient to accelerate the rate of hardening. The borate compound is preferably a compound of Formula (I), or a salt, hydrate or precursor thereof:B(L).sub.n (I)wherein each L is independently --OH, --OR, --NH, --NR, or a substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, or substituted or unsubstituted heterocyclic group; R is a substituted or unsubstituted alkyl group or substituted or unsubstituted aryl group; and, n is 1, 2, or 3, with the proviso that at least one L is --OH. Preferred borate compounds are sodium and potassium borate, and hydrates thereof, and phenyl boronic acid.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: September 1, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey Facer Taylor, Hwei-Ling Yau, Elmer Charles Flood, Lan Bach Thai, Susan A. Visser
  • Thermally processable imaging element
    Patent number: 5783380
    Abstract: A thermally processable imaging element is comprised of:(1) a support;(2) a thermographic or photothermographic imaging layer on one side of the support;(3) a transparent protective layer comprising:(A) a film forming binder;(B) a dye in said protective layer in an amount sufficient to impart a pre-selected color thereto; and(C) matte particles, the color of which substantially matches the color of the protective layer.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: July 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: Dennis Edward Smith, Sharon Marilyn Melpolder, John Leonard Muehlbauer
  • Infrared absorber dyes
    Patent number: 5783377
    Abstract: A photographic element having a light sensitive layer and containing a dye of the formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represents the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus;X.sub.3 represents the atoms necessary to form a 5- or 6-membered ring structure, which may be substituted;R.sub.1 and R.sub.2 each independently represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group;R.sub.3 represents H, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group;r and s independently are 0 or 1; andW represents one or more counterions as needed to balance the charge of the molecule.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: July 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: John David Mee, Colin James Gray
  • Photographic element containing ultraviolet absorbing polymer
    Patent number: 5766834
    Abstract: This invention relates to a photographic element containing a polymeric ultraviolet absorbing polymer fromed from an ultraviolet absorbing monomer of formula (I): ##STR1## where X is a bivalent linking group, and Y contains an ethylenically unsaturated functional group.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: June 16, 1998
    Assignee: Eastman Kodak Company
    Inventors: Tienteh T Chen, Lal C Vishwakarma, Hwei-Ling Yau
  • Process for the preparation of binary sensitizing dyes
    Patent number: 5756740
    Abstract: A process for the preparation of photographic binary sensitizing dyes, which comprise two separate, nonconjugated chromophores, one of which has the capability of adsorbing to a silver halide grain surface, the other of which is substantially non-adsorbing to silver halide. The process comprises reacting two dye compounds in a solvent in the presence of a 2-halo-1-alkylpyridinium salt and a 4-dialkylaminopyridine.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: May 26, 1998
    Assignee: Eastman Kodak Company
    Inventors: Lal Chand Vishwakarma, Chin Hsin Chen
  • Thermally processable imaging element comprising polymeric matte particles
    Patent number: 5750328
    Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating are comprised of a support, a thermographic or photothermographic imaging layer, a protective overcoat layer and a backing layer and include in at least one layer thereof, polymeric matte particles comprising a polymeric core surrounded by a layer of colloidal inorganic particles. The polymeric matte particles provide enhanced image quality and improved processing characteristics with respect to adhesion, dusting and lack of haze.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: Sharon Marilyn Melpolder, Dennis Edward Smith, Christopher Edwin Wheeler, John Leonard Muehlbauer
  • Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
    Patent number: 5747236
    Abstract: A photographic element comprises a support and at least one silver halide emulsion layer in which the silver halide is sensitized with a fragmentable electron donor of the formula X--Y, wherein X is an electron donor moiety and Y is a leaving group other than hydrogen, and wherein:1) X--Y has an oxidation potential between 0 and about 1.4 V; and2) the oxidized form of X--Y undergoes a bond cleavage reaction to give the radical X.sup..cndot. and the leaving fragment Y.In a preferred embodiment of the invention, the radical X.sup..cndot. has an oxidation potential .ltoreq.-0.7V.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 5, 1998
    Assignee: Eastman Kodak Company
    Inventors: Samir Y. Farid, Jerome R. Lenhard, Chin H. Chen, Annabel A. Muenter, Ian R. Gould, Stephen A. Godleski, Paul A. Zielinski, Charles H. Weidner
  • Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
    Patent number: 5747235
    Abstract: A photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula: ##STR1## wherein A is a silver halide adsorptive group that contains at least one atom of N, S, Se, or Te that promotes adsorption to silver halide, and L represents a linking group containing at least one C, N, S or O atom, k is 1 or 2, and XY is an fragmentable electron donor moiety in which X is an electron donor group and Y is a leaving group other than hydrogen, and wherein:1) XY has an oxidation potential between 0 and about 1-4 V; and2) the oxidized form of XY undergoes a bond cleavage reaction to give the radical X.sup..cndot. and the leaving fragment Y.In a preferred embodiment of the invention, the radical X.sup..cndot. has an oxidation potential .ltoreq.-0.7V.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 5, 1998
    Assignee: Eastman Kodak Company
    Inventors: Samir Y. Farid, Jerome R. Lenhard, Chin H. Chen, Annabel A. Muenter, Ian R. Gould, Stephen A. Godleski, Paul A. Zielinski
  • Photographic silver halide colour material having improved granularity and dye hue
    Patent number: 5747230
    Abstract: A photographic silver halide color print material comprising a support and yellow, magenta and cyan dye image forming layer units comprising at least one silver halide emulsion layer and at least one dye image-forming coupler which material contains a total silver halide coating weight less than 150 mg/m.sup.2 (as silver) and wherein the grain size (average volume in cubic microns) of the emulsion(s) is less than 1.0 (.mu.m).sup.3 in the yellow image forming unit and less than 0.125 (.mu.m).sup.3 in the magenta image forming unit and wherein each layer unit of the material has a dye image-forming efficiency (E) under conditions of use of above 30 where: ##EQU1## wherein the emulsion(s) of the cyan dye image forming layer unit have a silver coating weight less than 50 mg/m.sup.2, and an average grain size less than 0.064 (.mu.m).sup.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: May 5, 1998
    Assignee: Eastman Kodak Company
    Inventors: John Arthur Bee, John Kenneth Charles Kempster, Gareth Evans
  • Method of synthesizing tert-amido-substituted 2-(2'-hydroxyphenyl) benzotriazole compounds in a one-step process
    Patent number: 5739348
    Abstract: A method for preparing a compound of formula (III): ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, L, Z and p are as defined in the specification;said process preferably comprising either a noble metal catalyzed hydrogenation or a non-catalytic reductive ring closure of an azo dye compound of formula (IV): ##STR2## where R11 is as defined in the specification, thereby performing a reductive ring closure and selective O-deacylation in a single process step.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: Lal Chand Vishwakarma, Victor LaVonne Mylroie
  • Photographic element comprising a red sensitive silver halide emulsion layer
    Patent number: 5723280
    Abstract: A silver halide photographic element comprises a silver halide emulsion layer sensitized with a sensitizing dye of Formula I: ##STR1## wherein each of X.sub.1 and X.sub.2 is an oxygen atom, a sulfur atom, or a selenium atom, with the proviso that one of X.sub.1 and X.sub.2 is an oxygen atom and the other is a sulfur or selenium atom; V.sub.1 and V.sub.2 together or V.sub.2 and V.sub.3 together represent the atoms necessary to complete a fused benzene ring; each of V.sub.4 and V.sub.5 is independently a hydrogen or halogen atom, or an alkyl, alkoxy or aryl group; R.sub.1 is an acid substituted alkyl group; R.sub.2 is a 2-sulfoethyl group; and M is a counterion as necessary to balance the charge.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Steven George Link, James Kenneth Elwood, Frederick Charles Derks, Kenneth William Lowe
  • Cyanine dyes with chain sulfone substituent photographic materials comprising
    Patent number: 5695918
    Abstract: A dye of the formula (I) below, and photographic elements having a light sensitive layer and which element contains such a dye: ##STR1## X.sub.1 and X.sub.2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus;x and y are, independently, integers from 0 to 3 provided x+y is no greater than 4;p and q each independently represents 0 or 1,each L independently represents a methine group;R.sub.1 and R.sub.2 each independently represents an alkyl group or an aryl group, andR.sub.3 represents an alkyl group, aryl group or heteroaryl group;W1 is a counterion as needed to balance the charge of the molecule.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Colin James Gray, John David Mee, Derek David Chapman, Kevin Wallace Williams
  • Combination of yellow filter dye and 4-equivalent pyrazolone magenta coupler
    Patent number: 5695917
    Abstract: A photographic element contains a four-equivalent pyrazolone magenta coupler and a yellow filter dye represented by Formula I. ##STR1## wherein: A is an acidic nucleus selected from the group consisting of benzoylacetonitrile, 2-phenyl-1,1,3-tricyanopropene, 5-pyrazolone, isooxazolone, barbituric acid, thiobarbituric acid, rhodanine, hydantoin, thiohydantoin, oxazolidindione, pyrazolidindione, indandione, pyrazolopyridone, 1,2,3,4-tetrahydroquinolin-2,4-dione, 3-oxo-2,3-dihydrobenzo?d!thiophene-1,1-dioxide and 3-dicynaomethine-2,3-dihydroxybenzo?d!thiophene-1,1-dioxide;L.sup.1-3 each independently represents a substituted or unsubstituted methine group;n is 0 or 1;R.sup.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: John Victor Nelson, Margaret Jones Helber, Mary Christine Brick
  • Benzotriazole-based UV absorbers and photographic elements containing them
    Patent number: 5683861
    Abstract: An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: ##STR1## wherein: R.sub.4 is a substituted alkyl group, R.sub.4 may be further joined to either L or A* forming a ring and the benzo or phenyl ring shown may be further substituted or unsubstituted;L is a bivalent linking group;p is 0 or 1;A* is an alkyl group having an asymmetric carbon or asymmetric silicon atom, and;wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: November 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Lal C. Vishwakarma, Glenn M. Brown
  • Method of synthesizing dyes and precursor compounds therefor
    Patent number: 5679795
    Abstract: A method of synthesizing a compound having a 1,3-thiazolidin-4-one ring appended at the 2-position by a double bond to the active methylene position of a ketomethylene or malononitrile moiety, which comprises reacting the corresponding ketomethylene compound or malononitrile with an isothiocyanate in the presence of a base, reacting the resulting product with a haloacetic acid or haloacetic ester, followed by eliminating water or alcohol to form the 1,3-thiazolidin-4-one ring. A fragment necessary to complete a merocyanine, oxonol, hemicyanine, benzylidene, cinnamylidene or holopolar cyanine dye can be appended to the 1,3-thiazolidin-4-one ring to obtain the desired dye.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Assignee: Eastman Kodak Company
    Inventor: John David Mee
  • Process for the preparation of benzotriazole derivatives
    Patent number: 5675015
    Abstract: 2-(2'-Hydroxyphenyl)-2H-benzotriazoles of formula (I): ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8 and Z are defined in the specification, are prepared by catalytic hydrogenation of a suitable o-nitroazo dye compound in the presence of a PtS, Pt, Pd, Pt/Pd or other noble metal hydrogenation catalyst, in the presence of a base, an acid and a hydroxylic solvent.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: October 7, 1997
    Assignee: Eastman Kodak Company
    Inventors: Lal Chand Vishwakarma, Victor LaVonne Mylroie, Louis Francis Valente, Barry Francis Briffa