Patents Represented by Attorney Peter C. Cody
  • Patent number: 5700631
    Abstract: A photographic element is provided comprising a support having situated thereon a silver halide emulsion layer, the emulsion layer comprising a compound of the formula:Z--SO.sub.2 S--Au(I)--L (I)whereinZ represents an alkyl, aryl, or heterocyclic group; andL represents a thioether, selenoether or telluroether containing ligand.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: December 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: Roger Lok, Weimar Weatherly White
  • Patent number: 5700608
    Abstract: A photographic element is described which comprises a silver halide emulsion having incorporated therein a latent image forming unit, said unit being comprised of an agglomeration of silver halide in conductive contact with a light absorbing center, wherein the center is comprised of:(i) an amorphous or liquid crystalline spectral sensitizing dye; or(ii) a plurality of spectral sensitizing dye crystals.Also described is a process for forming a silver halide emulsion and the emulsion prepared by such process.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: December 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: Lyn Marie Eshelman, David Darrell Miller, David Howard Levy
  • Patent number: 5686234
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release T.sup.2, T.sup.2 being an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG;R.sup.1 and R.sup.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: November 11, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Donald Singleton, Jr., Frank Dino Coms
  • Patent number: 5674673
    Abstract: The invention concerns a color negative process wherein a photographic material comprising silver chloride or silver bromide and a DIR or DIAR coupler is processed in the presence of a polyester comprising intralinear thioether atoms.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: October 7, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jacques Roussilhe, John Martin Higgins
  • Patent number: 5670301
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
  • Patent number: 5614360
    Abstract: A photographic element and an aqueous coating composition for providing a layer to a photographic element are disclosed. The coating composition comprises gelatin in a concentration greater than about 6% by weight, and a palladium complex having the structure: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently selected from hydrogen, alkyl, alkenyl, aryl or alkaryl, the alkyl, alkenyl, aryl, or alkaryl optionally being substituted with a hydroxy, sulfonate, amino or ammonium group; and wherein any two of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 can be bonded to form a ring;Z.sup.1 and Z.sup.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: March 25, 1997
    Assignee: Eastman Kodak Company
    Inventors: Kenneth G. Harbison, Wilbur S. Gaugh, Thomas H. Whitesides, James A. Friday
  • Patent number: 5601970
    Abstract: This invention provides a photographic element comprising a support having thereon a silver halide emulsion layer which is greater than about 50 mole % silver chloride, wherein the emulsion layer contains a thiophosphate ester of the structure: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of an aliphatic, carbocyclic or heterocyclic group.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: February 11, 1997
    Assignee: Eastman Kodak Company
    Inventor: Roger Lok
  • Patent number: 5576170
    Abstract: A photographic element comprising a support having situated thereon a silver halide emulsion, the emulsion comprising an alkynylamine compound of the formula: wherein Z represents atoms necessary to complete a 5 to 10-membered heterocyclic ring system, R.sup.1 represents hydrogen or an alkyl of from 1 to 5 carbon atoms, and R.sup.2 represents hydrogen, or an alkyl, aryl, heteroaryl, carbocyclic or heterocyclic group; andat least one dihydroxy aryl compound represented by formula II or III: ##STR1## wherein R.sup.3 to R.sup.12 are independently selected from the group consisting of hydrogen, hydroxy, sulfonate, or an alkyl of from 1 to 5 carbon atoms, and wherein at least two of such groups represent a hydroxy group.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Jon N. Eikenberry, Robert E. Bernard
  • Patent number: 5521057
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: May 28, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Ronald E. Leone, David A. Steele
  • Patent number: 5514530
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: May 7, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Melvin M. Kestner, Ronald E. Leone, David A. Steele
  • Patent number: 5510235
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 23, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Daniel L. Kapp, John R. Ross
  • Patent number: 5506094
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 9, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Melvin M. Kestner, Ronald E. Leone, David A. Steele
  • Patent number: 5500335
    Abstract: The present invention provides a photographic emulsion comprising comprising silver halide grains, an iridium containing hexacoordination complex, and at least two grain surface modifiers, wherein the first of the grain surface modifiers is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10, inclusive, of the periodic table, and the second of the grain surface modifiers is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10, inclusive, of the periodic table.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 19, 1996
    Assignee: Eastman Kodak Company
    Inventor: Eric L. Bell
  • Patent number: 5500338
    Abstract: The invention provides a black and white photographic element comprising a support having situated thereon at least one silver halide emulsion, the element containing a release compound that provides a non-imagewise distribution of a photographically active moiety, wherein the release compound has the structure ##STR1## wherein R.sup.1 is an electron withdrawing moiety;m is 0, 1, 2 or 3;R.sup.2 is a group containing an aqueous solubilizing group;q is 1 or 2;TIME is a timing group;n is 0, 1, 2 or 3; andPAM is a photographically active moiety.Also provided is a method of preparing a photographic emulsion comprising precipitating silver halide grains in a colloidal medium, washing the grains, sensitizing the grains by adding dyes, chemical sensitizers and heating, and adding to the emulsion a methanolic solution comprising a release compound as described above.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: March 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Donald L. Kerr, Jerome J. Looker
  • Patent number: 5491056
    Abstract: A process is disclosed for preparing a photographic emulsion utilizing an alkynylamine compound as a grain growth modifier. Specifically, the present invention provides a process of preparing a photographic emulsion comprising:introducing silver ions, halide ions and a grain growth modifier having the structure ##STR1## wherein z represents atoms necessary to complete a five to nine-membered heterocyclic ring system, R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen or a lower alkyl of from 1 to 5 carbon atoms, and R.sup.4 represents hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, which may be substituted or unsubstituted, into a dispersing medium containing silver halide seed grains; andmaintaining the dispersing medium containing the seed grains, silver ions, halide ions and grain growth modifier at a pH in the range from about 4.5 to about 10, and a pAg in the range from about 6.0 to about 9.5.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: February 13, 1996
    Assignee: Eastman Kodak Company
    Inventors: Xin Wen, Roger Lok
  • Patent number: 5482825
    Abstract: A method of making a silver halide emulsion comprising precipitating and chemically sensitizing the emulsion and further comprising adding to the emulsion a fused dihydropyrimidine compound represented by the following formula: ##STR1## wherein X is O, S or Se; R is a substituted or unsubstituted alkyl or aryl group; andZ contains the atoms necessary to form an aromatic group, a heteroaromatic group or a heterocyclic group and a silver halide emulsion made by this method.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: January 9, 1996
    Assignee: Eastman Kodak Company
    Inventors: Roger Lok, Carl R. Preddy, Xin Wen
  • Patent number: 5480771
    Abstract: The present invention provides a photographic emulsion silver halide grains having incorporated therein or thereon a dopant, a grain surface modifier, and a hexacoordination complex comprising iridium, wherein the dopant is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10 of the periodic table, and the grain surface modifier is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10 of the periodic table.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: January 2, 1996
    Assignee: Eastman Kodak Company
    Inventor: Eric L. Bell
  • Patent number: 5478711
    Abstract: A photographic element comprising a support having located thereon at least one silver halide emulsion layer, the emulsion layer containing a development accelerator and a release compound that provides a non-imagewise distribution of a development inhibitor moiety. The release compound is characterized in that it comprises a blocking group from which the development inhibitor moiety is released.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: December 26, 1995
    Assignee: Eastman Kodak Company
    Inventors: Keath T. Chen, John V. Nelson, David A. Dickinson, Thomas R. Welter
  • Patent number: 5478721
    Abstract: A color negative or reversal photographic element comprising a support having situated thereon a non-tabular silver halide emulsion layer, said emulsion layer being predominantly silver chloride and containing a compound of the formula: ##STR1## where R represents an aliphatic, carbocyclic, or heterocyclic group; X represents oxygen, sulfur, selenium, or unsubstituted or alkyl or aryl substituted nitrogen; and Z.sup.1 and Z.sup.2 independently represent hydrogen, an acyl, aliphatic, carbocyclic, or heterocyclic group.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: December 26, 1995
    Assignee: Eastman Kodak Company
    Inventor: Roger Lok
  • Patent number: 5474888
    Abstract: The present invention provides a photographic emulsion silver halide grains having incorporated therein or thereon a dopant, a grain surface modifier, and a hexacoordination complex comprising iridium, wherein the grain surface modifier is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10, inclusive, of the periodic table, and the dopant is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10 of the periodic table.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: December 12, 1995
    Assignee: Eastman Kodak Company
    Inventor: Eric L. Bell