Patents by Inventor Roger L. Klaus

Roger L. Klaus 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: 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: 6964842
    Abstract: Aqueous-based photothermographic materials comprise a hydrophilic binder, preformed silver halides, an organic silver salt, a reducing agent composition, and one or more benzothiazolium, benzoselenazolium, or benzotellurazolium salts as antifoggants. These photothermographic materials can be used in combination with phosphor intensifying screens for radiographic imaging.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: November 15, 2005
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Roger L. Klaus
  • Patent number: 6919171
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Publication number: 20040157177
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Application
    Filed: December 23, 2003
    Publication date: August 12, 2004
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Patent number: 6730467
    Abstract: The invention relates to a method of forming a silver halide emulsion comprising forming a silver chloride emulsion, adding spectral sensitizing dye, sulfur, and gold sulfide to said emulsion, heating said emulsion to chemically and spectrally sensitize said emulsion, and cooling said emulsion.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: May 4, 2004
    Assignee: Eastman Kodak Company
    Inventors: Jerzy Z. Mydlarz, Roger L. Klaus
  • Publication number: 20040033447
    Abstract: Aqueous-based photothermographic materials comprise a hydrophilic binder, preformed silver halides, an organic silver salt, a reducing agent composition, and one or more benzothiazolium, benzoselenazolium, or benzotellurazolium salts as antifoggants. These photothermographic materials can be used in combination with phosphor intensifying screens for radiographic imaging.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 19, 2004
    Applicant: Eastman Kodak Company
    Inventors: Chaofeng Zou, Roger L. Klaus
  • Publication number: 20040033452
    Abstract: A radiation-sensitive emulsion comprised of high chloride silver halide grains having a central portion accounting for up to 99 percent of total silver and containing a first dopant of Formula (I): [RuL6]n wherein n is −2, −3 or −4, and L6 represents bridging ligands which can be independently selected, provided that at least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a cyano ligand; and a second dopant comprising an iridium coordination complex having ligands each of which are more electropositive than a cyano ligand; wherein the first dopant and the second dopants are located together in a common dopant band in an interior shell region of the central portion of the silver halide grains that surrounds at least 70 percent of the silver and, with the more centrally located silver, accounts for 90 percent of the silver halide forming the grains, and wherein the second dopant is present in the silver
    Type: Application
    Filed: August 12, 2003
    Publication date: February 19, 2004
    Applicant: Eastman Kodak Company
    Inventors: Jerzy Z. Mydlarz, John D. Lewis, Roger L. Klaus, Raymond S. Eachus
  • Patent number: 6692906
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: February 17, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Publication number: 20030073048
    Abstract: A radiation-sensitive emulsion comprised of high chloride silver halide grains having a central portion accounting for up to 99 percent of total silver and containing a first dopant of Formula (I): [ML6]n wherein n is zero, −1, −2, −3 or −4; M is a filled frontier orbital polyvalent metal ion, other than iridium, and L6 represents bridging ligands which can be independently selected, provided that at least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a cyano ligand; wherein a second dopant comprising an iridium coordination complex having ligands each of which are more electropositive than a cyano ligand is located together with the first dopant in a common dopant band within the central portion of the silver halide grains.
    Type: Application
    Filed: July 31, 2001
    Publication date: April 17, 2003
    Applicant: Eastman Kodak Company
    Inventors: Jerzy Z. Mydlarz, John D. Lewis, Roger L. Klaus, Raymond S. Eachus
  • Patent number: 6548233
    Abstract: Aqueous-based thermally sensitive emulsions and imaging materials include two or more hindered phenol silver ion reducing agents in a non-crystalline reducing agent composition. Such compositions can be provided as evaporated dispersions and can be formulated in aqueous coating compositions to provide thermally developable materials such as thermographic and photothermographic materials.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: April 15, 2003
    Assignee: Eastman Kodak Company
    Inventors: John W. Boettcher, Paul L. Zengerle, Roger L. Klaus
  • Patent number: 6518009
    Abstract: A method of imaging employing sensitized high chloride silver halide emulsions which exhibit improved speed and high intensity reciprocity performance for use with short duration, high intensity exposure optical and digital exposure systems. The method comprising providing a photographic element comprising at least one high chloride silver halide emulsion layer, exposing said element utilizing a high intensity actinic radiation exposure for an exposure time of less than {fraction (1/100)} second, and developing said element to produce a photographic image, wherein the high chloride silver halide emulsion layer is comprised of silver halide emulsion grains containing at least 90 mole percent chloride, based on silver, obtained by providing a high chloride host emulsion, bringing a Lippmann emulsion comprising primarily fine silver bromide grains doped with iridium into contact with said high chloride host emulsion, and subsequently chemically sensitizing the high chloride emulsion.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: February 11, 2003
    Assignee: Eastman Kodak Company
    Inventors: Jerzy Z. Mydlarz, 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: 6514681
    Abstract: A radiation-sensitive emulsion comprised of an aqueous dispersing medium and a coprecipitated grain population including tabular grains containing greater than 50 mole percent bromide, based on silver, having {111} major faces, and accounting for greater than 90 percent of total grain projected area, wherein said dispersing medium is comprised of (a) a gelatin which has been modified to convert at least one carboxylic acid group thereof to a group that does not exhibit pH-dependent ionization within the pH range from 4.0 to 7.0, and (b) a polyalkylene oxide block copolymer surfactant.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 4, 2003
    Assignee: Eastman Kodak Company
    Inventors: Seshadri Jagannathan, Julia S. Tan, Roger L. Klaus, Philip J. Zola
  • 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
  • Publication number: 20020197572
    Abstract: A radiation-sensitive emulsion comprised of an aqueous dispersing medium and a coprecipitated grain population including tabular grains containing greater than 50 mole percent bromide, based on silver, having {111} major faces, and accounting for greater than 90 percent of total grain projected area, wherein said dispersing medium is comprised of (a) a gelatin which has been modified to convert at least one carboxylic acid group thereof to a group that does not exhibit pH-dependent ionization within the pH range from 4.0 to 7.0, and (b) a polyalkylene oxide block copolymer surfactant.
    Type: Application
    Filed: May 24, 2001
    Publication date: December 26, 2002
    Applicant: Eastman Kodak Company
    Inventors: Seshadri Jagannathan, Julia S. Tan, Roger L. Klaus, Philip J. Zola
  • Patent number: 6350567
    Abstract: A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole-% silver chloride, said emulsion containing an isothiazolone compound represented by the formula wherein R1 is a substituent; and Z contains the carbon atoms necessary to form a substituted or unsubstituted non-aromatic ring, wherein the isothiazolone compound was added before or during precipitation of the emulsion.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: February 26, 2002
    Assignee: Eastman Kodak Company
    Inventors: Benjamin T. Chen, Roger L. Klaus, Jeri L. Mount
  • Patent number: 5968724
    Abstract: This invention relates to silver halide photographic element comprising a silver halide emulsion chemically sensitized in the presence of an isothiazolin-one compound represented by the formula ##STR1## wherein R.sup.1 is a substituent; and Z is a substituted or unsubstituted saturated ring, wherein the isothiazolin-one compound was added after precipitation of the emulsion.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 19, 1999
    Assignee: Eastman Kodak Company
    Inventors: Jon N. Eikenberry, Roger L. Klaus, Roger L. Lok, Jerzy Z. Mydlarz, Brian S. White
  • Patent number: 5879872
    Abstract: This invention relates to a silver halide photographic element comprising a silver halide emulsion precipitated and/or chemically sensitized in the presence of an sulfenimide compound represented by the formula: ##STR1## wherein M represents the atoms necessary to form, with R.sup.1 and R.sup.2, a five or six-membered ring or a multiple ring system; w is 1 or 0, wherein when w is 0, R.sup.1 and R.sup.2 are independently substituted or unsubstituted aliphatic, aromatic or heterocyclic groups, and when w is 1, R.sup.1 and R.sup.2 are independently carbonyl or sulfonyl groups; R.sup.3 is independently a substituted or unsubstituted aliphatic, aromatic or heterocyclic group and x is 0 or 1.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: March 9, 1999
    Assignee: Eastman Kodak Company
    Inventors: Franklin D. Saeva, Roger L. Klaus, Jerzy Z. Mydlarz