Patents by Inventor George J. Burgmaier

George J. Burgmaier 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).

  • Patent number: 7189502
    Abstract: A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: March 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, George J. Burgmaier, Steven P. Szatynski, Stephen A. Hershey
  • Patent number: 7169544
    Abstract: Black-and-white, dry processable thermally developable materials have increased stability after imaging with the incorporation of at least 0.0001 mol/m2 of a thermal solvent having one or more >N—C(?O)— groups. Such thermally developable materials include both thermographic and photothermographic materials.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: Kui Chen-Ho, William D. Ramsden, Chaofeng Zou, Doreen C. Lynch, James B. Philip, Jr., Karissa L. Eckert, George J. Burgmaier
  • Patent number: 7169543
    Abstract: Photothermographic materials contain one or more blocked aliphatic thiol compounds in an amount of at least 1 mg/m2 as stabilizers. These compounds have a calculated octanol-water partition coefficient (c log P value) of 2.0 or greater, and an N value equal to or greater than 6.5.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: William D. Ramsden, James B. Philip, Jr., Doreen C. Lynch, Kui Chen-Ho, Stacy M. Ulrich, Kumars Sakizadeh, Jeffrey W. Leon, George J. Burgmaier
  • Patent number: 7097963
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability after imaging with the incorporation of at least 0.0002 mol/m2 of a halogen-substituted tetraazaindene compound.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: August 29, 2006
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Kumars Sakizadeh, George J. Burgmaier, Roger L. Klaus
  • Patent number: 6518007
    Abstract: This invention relates to a multicolor silver halide photographic element comprising a support and at least one high bromide silver halide emulsion layer comprising low fogging tabular silver halide grains, said element further comprising an antifoggant represented by the following Structure I: R1—SO2—C(R2)R3—(CO)m—(L)n—SG  I wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is a divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group that has a pKa of 8 or less.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: February 11, 2003
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, George J. Burgmaier, John E. Keevert, Roger L. Klaus
  • Patent number: 6514678
    Abstract: Aqueous-based photothermographic materials have improved stability to increase in Dmin during aging by including certain water-soluble or water-dispersible antifoggants that have a pKa of 8 or less. These antifoggants are represented by Structure I: R1—SO2—C(R2)R3—(CO)m—(L)n—SG  I wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is an aliphatic divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group having a pKa of 8 or less.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: February 4, 2003
    Assignee: Eastman Kodak Company
    Inventors: George J. Burgmaier, Roger L. Klaus
  • Patent number: 6506548
    Abstract: This invention relates to a silver halide photographic element comprising at least one silver halide emulsion layer and further comprising an antifoggant represented by the following Structure I: wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is a divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group that has a pKa of 8 or less.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: January 14, 2003
    Assignee: Eastman Kodak Company
    Inventors: Roger L. Klaus, George J. Burgmaier, Jon N. Eikenberry, Jerzy Z. Mydlarz, Nicholas E. Grzeskowiak
  • Patent number: 6506934
    Abstract: This invention relates to a compound that is represented by the following Structure I: R1—SO2—C(R2)R3—(CO)m—(L)n—SG  I wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is an divalent linking group, m and n are independently 0 or 1, SG is a solubilizing group with a pKa of 8 or less, with the proviso that when m and n are both 0, SG is not a sulfo (or salt thereof) or a sulfonamido (or salt thereof) and when m is 0 and n is 1, either L is not an alkylene group or SG is not a carboxy (or salt thereof).
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: January 14, 2003
    Assignee: Eastman Kodak Company
    Inventors: George J. Burgmaier, Roger L. Klaus
  • Patent number: 6492101
    Abstract: A method of making a monodisperse regular grain silver halide high bromide emulsion is described comprising precipitating regular silver halide grains comprising greater than 50 mole percent bromide, based on total silver, in a reaction vessel, and adding to the reaction vessel before or during precipitation a disulfide compound represented by the following formula (I): where Y and Z are H atoms or substituents, which may be connected to form a carbocyclic or heterocyclic ring, X is —O—, —NH— or —NR—, where R is a substituent; M is —H— or a cationic species; and L is a linking group, where p is 0 or 1. The invention further provides a silver halide emulsion prepared by the method, and a photographic element comprising a silver halide emulsion prepared by the method.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: December 10, 2002
    Assignee: Eastman Kodak Company
    Inventors: Sang H. Kim, George J. Burgmaier, Bradley K. Jensen
  • Publication number: 20020177089
    Abstract: A method of making a monodisperse regular grain silver halide high bromide emulsion is described comprising precipitating regular silver halide grains comprising greater than 50 mole percent bromide, based on total silver, in a reaction vessel, and adding to the reaction vessel before or during precipitation a disulfide compound represented by the following formula (I): 1
    Type: Application
    Filed: April 3, 2001
    Publication date: November 28, 2002
    Applicant: Eastman Kodak Company
    Inventors: Sang H. Kim, George J. Burgmaier, Bradley K. Jensen
  • Patent number: 6472134
    Abstract: A silver halide photographic element comprising at least one silver halide emulsion, said silver halide element further comprising an amido compound represented by Formula 1 wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and R1 and R2 independently represents an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system; or R1 and R2 are independently a —C(═O)(LINK)m—INH group, or are substituted with an —NR3aC(═O)—(LINK)m—INH group, with R3a being defined the same as R1 or R2, and wherein the compound of Formula I does not substantially react with oxidized developer to release INH; and a fragmentable electron donor compound of the formula X—Y′ or a compound which contains a moiety of the formula —X—Y′;  wherein X is an electron donor
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 29, 2002
    Assignee: Eastman Kodak Company
    Inventors: Steven P. Szatynski, James H. Reynolds, Annabel A. Muenter, George J. Burgmaier
  • Patent number: 6472135
    Abstract: This invention relates to a silver halide photographic element comprising at least one silver halide emulsion, said silver halide element further comprising an amido compound represented by Formula 1 wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and R1 and R2 independently represents an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m—INH group, or are substituted with an —NR3aC(═O)—(LINK)m—INH group, with R3a being defined the same as R1 or R2; and wherein the compound of Formula 1 does not substantially react with oxidized developer to release INH; and a reductone compound represented by Formula 2 wherein R7 and R8 are the same or different, and may represent H, alkyl, cycloalkyl, aryl, or an
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 29, 2002
    Assignee: Eastman Kodak Company
    Inventors: Steven P. Szatynski, James H. Reynolds, Lillian M. Kellogg, George J. Burgmaier
  • Patent number: 6472133
    Abstract: This invention relates to a silver halide photographic element comprising at least one silver halide emulsion layer containing a dye-forming coupler which reacts with an oxidized color developing agent to form dye, said silver halide element further comprising an amido compound of Formula I wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and wherein INH is a development inhibitor; R1 and R2 independently represent an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m—INH group, or are substituted with an —NR3aC(═O)—(LINK)m—INH group, with R3a being defined the same as R1 or R2, and wherein the compound of Formula I does not substantially react with oxidized developer to release INH.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 29, 2002
    Assignee: Eastman Kodak Company
    Inventors: James H. Reynolds, Steven P. Szatynski, Stephen P. Singer, George J. Burgmaier, Janet N. Younathan, Lillian M. Kellogg
  • Patent number: 6440655
    Abstract: A silver halide photographic element comprising at least one silver halide emulsion layer containing a dye-forming coupler which reacts with an oxidized color developing agent to form dye, said silver halide element further comprising a polyester support and an amido compound of Formula I wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; R1 and R2 independently represent an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m—INH group, or are substituted with an —NR3aC(═O)—(LINK)m—INH group, with R3a being defined the same as R1 or R2, and wherein the compound of Formula I does not substantially react with oxidized developer to release INH.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: Steven P. Szatynski, James H. Reynolds, Janet N. Younathan, George J. Burgmaier
  • Patent number: 5871899
    Abstract: A silver halide color photographic element comprising a support, a silver halide emulsion and poly(alkylene oxide)s wherein greater than 50 percent of the poly(alkylene oxide)s have acidic functional end groups with an aqueous pKa.ltoreq.10, or end groups which will react to form acidic functional end groups with an aqueous pKa.ltoreq.10 during development, on both termini; and wherein the poly(alkylene oxide)s have a molecular weight ranging substantially between 1700 and 6000 AMU.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: February 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: David A. Dickinson, George J. Burgmaier, Thomas R. Welter
  • Patent number: 5789143
    Abstract: This invention relates to a silver halide color photographic element comprising a support, a silver halide emulsion and poly(thioether)s wherein greater than 50 percent of the poly(thioether)s have acidic functional end groups with an aqueous pKa.ltoreq.10, or end groups which will react to form acidic functional end groups with an aqueous pKa.ltoreq.10 during development, on both termini and wherein the poly(thioether)s have a molecular weight greater than 800.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: August 4, 1998
    Assignee: Eastman Kodak Company
    Inventors: George J. Burgmaier, David A. Dickinson, Robert A. Guistina
  • Patent number: 5418127
    Abstract: A disulfide compound represented by the following formula: ##STR1## wherein X is independently --O--, --NH-- or --NR--, where R is a substituent;m and r are independently 0, 1 or 2;M is --H or a cationic species;Ar is an aromatic group; andL is a linking group, where p is 0 or 1.A silver halide emulsion comprising said disulfide compounds and a photographic element comprising a silver halide emulsion in reactive association with said disulfide compounds and a method of making same.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: May 23, 1995
    Assignee: Eastman Kodak Company
    Inventors: Jerzy A. Budz, George J. Burgmaier, Roger L. Klaus, Xin Wen
  • Patent number: 5246826
    Abstract: The present invention relates to a process of preparing a photosensitive silver halide emulsion. In this process, an emulsion comprising an acid substituted organic ripening agent and a dispersing medium is prepared. Silver halide grains are then permitted to grow in the emulsion at a pH of from about 2 to about 4.6 to accelerate the growth of the silver halide grains. Subsequently, the pH of the emulsion is adjusted to a value of about 5.3 to about 7 to repress grain growth, to prevent interference with dye sensitization, and to limit fog formation, particularly during storage of the coated emulsion.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: September 21, 1993
    Assignee: Eastman Kodak Company
    Inventors: Arthur H. Herz, Roger L. Klaus, George J. Burgmaier
  • Patent number: 4810626
    Abstract: A photographic silver halide emulsion comprising a 1,1,3,3-tetrasubstituted middle chalcogen urea compound is described wherein at least one substituent comprises a nucleophilic center. The urea compound is an effective chemical sensitizing agent. A process for chemically sensitizing silver halide is also described.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: March 7, 1989
    Assignee: Eastman Kodak Company
    Inventors: George J. Burgmaier, Arthur H. Herz
  • Patent number: 4749646
    Abstract: A photographic silver halide emulsion comprising a 1,1,3,3-tetrasubstituted middle chalcogen urea compound is described wherein at least one substituent comprises an acid function. The urea compound is an effective silver halide grain growth-modifying agent. A process for modifying the grain growth of silver halide is also described.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: June 7, 1988
    Assignee: Eastman Kodak Company
    Inventors: Arthur H. Herz, George J. Burgmaier