Patents by Inventor Philip S. Bryan
Philip S. Bryan 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: 5585202Abstract: A radiographic phosphor panel having an organolead reducing agent. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer can include phosphor crystals, binder and organolead reducing agent. The organolead reducing agent has a concentration sufficient to substantially increase the photostimulated luminescence of the panel.Type: GrantFiled: April 24, 1995Date of Patent: December 17, 1996Assignee: Eastman Kodak CompanyInventors: Joseph F. Bringley, Philip S. Bryan
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Patent number: 5549843Abstract: A method, a storage phosphor prepared by the method, and a storage panel. In the method, a precursor mixture is fired, at a temperature between 700.degree. C. and the melting point of the phosphor, to produce an intermediate product. The precursor mixture comprises a combination of species characterized by the relationship:MFX.sub.1-x I.sub.z.uM.sup.a X.sup.a :yA:eQwherein M is selected from Mg, Ca, Sr and Ba; X is selected from Cl and Br; M.sup.a is selected from Na, K, Rb and Cs; X.sup.a is selected from F, Cl, Br and I; A is selected from Eu, Ce, Sm, and Tb; Q is metal oxide; and 0<z.ltoreq.1; 0<u<1; 0<y.ltoreq.0.1; and 0<e<0.1. The intermediate product is then annealed in a slightly oxidizing atmosphere, at a temperature, which is lower than said temperature of firing and between about 400.degree. C. and about 800.degree. C., for a time sufficient to reduce the erase fraction of the resulting phosphor relative to the same phosphor produced by firing in the same manner, but not annealing.Type: GrantFiled: November 21, 1991Date of Patent: August 27, 1996Assignee: Eastman Kodak CompanyInventors: Kyle E. Smith, Joseph F. Bringley, Patrick M. Lambert, David P. Trauernicht, Philip S. Bryan, Paul M. Hoderlein, Andrea M. Hyde
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Patent number: 5523558Abstract: A radiographic phosphor panel having metal hydride stabilizer compound. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer includes phosphor crystals, and binder. The oxosulfur reducing agent can be added to the luminescent layer. The oxosulfur reducing agent has a concentration sufficient to substantially increase the photostimulated luminescence of the panel.Type: GrantFiled: April 24, 1995Date of Patent: June 4, 1996Assignee: Eastman Kodak CompanyInventors: Joseph F. Bringley, Barbara J. Fisher, Philip S. Bryan
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Patent number: 5507976Abstract: A radiographic image storage phosphor, stabilized intermediate, and methods for preparing storage phosphor, and stabilized intermediate. The storage phosphor is the product of firing a combination of species characterized by the relationship:MFX.sub.1-z I.sub.z.uM.sup.a X.sup.a :yA:eQ:tDwherein M is selected from Mg, Ca, Sr, and Ba; X is selected from Cl and Br; M.sup.a is selected from Na, K, Rb, and Cs; X.sup.a is selected from F, Cl, Br, and I; A is selected from Eu, Ce, Sm, and Tb; Q is selected from BeO, MgO, CaO, SrO, BaO, ZnO, Al.sub.2 O.sub.3, La.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, TiO.sub.2, ZrO.sub.2, GeO.sub.2, SnO.sub.2, Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, and ThO.sub.2 ; D is selected from V, Cr, Mn, Fe, Co, and Ni; z is from 1 .times.10.sup.-4 to 1; u is from 0 to 1; y is from 1.times.10.sup.-4 to 0.1; e is from 0 to 1; and t is from 0 to 10.sup.Type: GrantFiled: September 2, 1994Date of Patent: April 16, 1996Assignee: Eastman Kodak CompanyInventors: Joseph F. Bringley, Philip S. Bryan, Andrea M. Hyde
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Patent number: 5464568Abstract: A radiation image storage phosphor; a composition of matter including the storage phosphor and a stabilizer for iodine; and a radiation image storage panel including the inventive phosphor. The storage phosphor has a combination of species characterized by the relationship:(Ba.sub.1-a-b-c Mg.sub.a Ca.sub.b Sr.sub.c)FBr.sub.1-z I.sub.z.rKX:yA:eQ:tDwhere X is selected from the group consisting of F, Cl, Br, and I; A is selected from the group consisting of Eu, Ce, Sm, and Tb; Q is selected from the group consisting of BeO, MgO, CaO, SrO, BaO, ZnO, Al.sub.2 O.sub.3, La.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, TiO.sub.2, ZrO.sub.2, GeO.sub.2, SnO.sub.2, Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, and ThO.sub.2 ; D is selected from the group consisting of V, Cr, Mn, Fe, Co, and Ni; a+b+c is from 0 to 0.4; z is from 1.times.10.sup.-4 to 1; r is from 10.sup.-6 to 0.1; y is from 1.times.10.sup.-4 to 0.1; e is from 10.sup.-5 to 0.1; and t is from 0 to 10.sup.-2.Type: GrantFiled: September 2, 1994Date of Patent: November 7, 1995Assignee: Eastman Kodak CompanyInventors: Joseph F. Bringley, Philip S. Bryan, Andrea M. Hyde
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Patent number: 5427868Abstract: A radiographic phosphor panel having binder compatible oxosulfur stabilizer and a preparation method. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer includes phosphor crystals, binder and an oxosulfur reducing agent. The oxosulfur reducing agent is dispersed within the luminescent layer on a substantially molecular basis. The oxosulfur reducing agent is a reducing agent for iodine. The oxosulfur reducing agent has a concentration sufficient to substantially increase the photostimulated luminescence of the panel.Type: GrantFiled: November 24, 1993Date of Patent: June 27, 1995Assignee: Eastman Kodak CompanyInventors: Joseph F. Bringley, Barbara J. Fisher, Andrea M. Hyde, Philip S. Bryan, Luther C. Roberts
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Patent number: 5336893Abstract: A phosphor composition which comprises oxygen and a combination of elements satisfying the relationship:[(Hf.sub.1-z Zr.sub.z).sub.1+x Sn.sub.1-x ].sub.1-y Ti.sub.2ywherein:x is in the range of from about -0.4 to 0.952y is in the range of from 0 to 0.5 andz is in the range of from 0 to 0.5These phosphors exhibit an orthorhombic crystal structure, and are useful in intensifying screens for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation.Type: GrantFiled: May 18, 1993Date of Patent: August 9, 1994Assignee: Eastman Kodak CompanyInventors: Kyle Smith, Barbara J. Fisher, Philip S. Bryan, Paul M. Hoderlein
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Patent number: 5173611Abstract: A phosphor composition is disclosed containing a titanium free hafnium zirconium germanate phosphor which emits electromagnetic radiation principally in the spectral region to which silver halide exhibits native sensitivity. To maximize the intensity of emission the ratio of host metals satisifies the relationship:D.sub.1+x Ge.sub.1-xwhereD is the combined sum of zirconium and hafnium andx is 0.15 to -0.50.An X-ray intensifying screen is disclosed containing the phosphor composition.Type: GrantFiled: January 17, 1992Date of Patent: December 22, 1992Assignee: Eastman Kodak CompanyInventors: Patrick M. Lambert, Philip S. Bryan, Gregory S. Jarrold, Christine M. Towers
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Patent number: 5150006Abstract: An internal junction organic electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode. The organic electron injecting and transporting zone is comprised of an electron injecting layer in contact with the cathode and, interposed between the electron injecting layer and the organic hole injecting and transporting zone, a blue emitting luminescent layer comprised of an aluminum chelate containing a phenolato ligand and two R.sup.S -8-quinolinolato ligands, where R.sup.S substitutents are chosen to block the attachment of more than two substituted 8-quinolinolato ligands to the aluminum atom. The presence of the phenolato ligand shifts device emission to the blue region of the spectrum and increases emission efficiency.Type: GrantFiled: August 1, 1991Date of Patent: September 22, 1992Assignee: Eastman Kodak CompanyInventors: Steven A. Van Slyke, Philip S. Bryan, Frank V. Lovecchio
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Patent number: 5141671Abstract: A blue-emitting luminescent composition is disclosed comprised of an aluminum chelate containing a phenolato ligand and two R.sup.s -8-quinolinolato ligands, where R.sup.s substituents are chosen to block the attachment of more than two substituted 8-quinolinolato ligands to the aluminum atom. The presence of the phenolato ligand shifts emission to the blue region of the spectrum. Emission can be shifted to even shorter blue wavelengths by the incorporation of a pentacarbocyclic aromatic fluorescent dye.Type: GrantFiled: August 1, 1991Date of Patent: August 25, 1992Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Frank V. Lovecchio, Steven A. VanSlyke
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Patent number: 5112700Abstract: A phosphor composition is disclosed containing a titanium activated hafnium zirconium germanate phosphor which emits electromagnetic radiation principally in the spectral region to which silver halide exhibits native sensitivity. To maximize the intensity of emission the ratio of host metals satisfies the relationship:D.sub.1+x Ge.sub.1-xwhereD is the combined sum of zirconium and halnium andx is 0.25 to -0.70.An X-ray intensifying screen is disclosed containing the phosphor composition.Type: GrantFiled: May 28, 1991Date of Patent: May 12, 1992Assignee: Eastman Kodak CompanyInventors: Patrick M. Lambert, Philip S. Bryan, Gregory S. Jarrold, Christine M. Towers
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Patent number: 5095218Abstract: An intensifying screen for producing a latent image in a silver halide radiographic element upon exposure to an image pattern of X-radiation is disclosed. The intensifying screen contains a fluorescent layer containing a phosphor capable of absorbing X-radiation and emitting longer wavelength electromagnetic radiation comprised of monoclinic crystals of a titanium activated zirconium hafnium oxide phosphor host. The phosphor contains in an amount sufficient to enhance emission of the longer wavelength electromagnetic radiation at least one alkali metal in combination with at least one Group 14 dopant chosen from Periods 3, 4 and 5.Type: GrantFiled: July 20, 1990Date of Patent: March 10, 1992Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 5017791Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing yttrium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.Type: GrantFiled: November 16, 1989Date of Patent: May 21, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 5008034Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing neodymium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.Type: GrantFiled: June 29, 1990Date of Patent: April 16, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4996003Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing ions of one or more rare earths selected from among those having an atomic number of 39, 62 to 64 inclusive, and 67 to 71 inclusive. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.Type: GrantFiled: June 29, 1990Date of Patent: February 26, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4994205Abstract: An intensifying screen for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation is disclosed. The screen contains a phosphor having a hafnia host containing zirconia in concentrations higher than those found in optical grade hafnia. The phosphor can include as an activator one or a combination of titanium, rare earth, and alkali metal ions. Phosphor preparation processes are also disclosed.Type: GrantFiled: June 29, 1990Date of Patent: February 19, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4992205Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing indium ions or indium ions in combination with neodymium ions. Indium increases speed while reducing afterglow while the further addition of neodymium allows afterglow to be eliminated. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.Type: GrantFiled: June 27, 1990Date of Patent: February 12, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4990282Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing scandium ions or scandium ions in combination with neodymium ions. Scandium increases speed while reducing afterglow while the further addition of neodymium allows afterglow to be eliminated. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.Type: GrantFiled: June 27, 1990Date of Patent: February 5, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4988880Abstract: An intensifying screen for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation is disclosed. The screen contains a phosphor having a hafnia host containing zirconia in concentrations higher than those found in optical grade hafnia. The phosphor can include as an activator one or a combination of titanium, rare earth, and alkali metal ions. Phosphor preparation processes are also disclosed.Type: GrantFiled: February 3, 1989Date of Patent: January 29, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
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Patent number: 4988881Abstract: A phosphor composition is disclosed comprised of phosphor crystals which consist essentially of oxygen and a combination of metals satisfying the relationship:Li.sub.2 Hf.sub.1-x-y-z Zr.sub.z Sn.sub.y Ti.sub.x L.sub.wwhereL is at least one rare earth;w+x+y collectively are 0 to 0.2; andz is up to 0.2.The composition has utility in an intensifying screen for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation.Type: GrantFiled: August 14, 1989Date of Patent: January 29, 1991Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold