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).

  • Patent number: 4983847
    Abstract: 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: Grant
    Filed: November 16, 1989
    Date of Patent: January 8, 1991
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4980560
    Abstract: 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: Grant
    Filed: November 16, 1989
    Date of Patent: December 25, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4980559
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing europium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: December 25, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick W. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4975588
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing lutetium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: December 4, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4972516
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing holmium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: November 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4972086
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing erbium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: November 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4967085
    Abstract: 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: Grant
    Filed: November 16, 1989
    Date of Patent: October 30, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4967087
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing ytterbium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 30, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4963753
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing gadolinium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 16, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4963754
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing thulium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 16, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4961004
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing samarium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 2, 1990
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Patent number: 4713322
    Abstract: A photographic silver halide emulsion comprising a thioether compound having more than 2 sulfur atoms in alkyl chains substituted on benzene nuclei. The compounds are useful in enhancing silver halide crystal growth. A process for preparation of the emulsion is also described.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: December 15, 1987
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Arthur H. Herz
  • Patent number: 4695535
    Abstract: A photographic silver halide emulsion is described which comprises an acyclic thioether compound which is capable of enhancing silver halide crystal growth without causing fog formation. A process for preparation of the emulsion is also described.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Arthur H. Herz
  • Patent number: 4695534
    Abstract: A photographic silver halide emulsion comprising a thioether substituted pyridine compound having improved ripening properties. A process for preparation of the emulsion is also described.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Arthur H. Herz
  • Patent number: 4599389
    Abstract: Photographic elements and diffusion transfer assemblages described which contain a novel mordant comprising a polymeric backbone having appended thereto nitrogen-coordinating ligands having the formula: ##STR1## wherein D.sup.1, D.sup.2, and D.sup.3 each independently represents the atoms necessary to complete an aromatic heterocyclic nucleus having at least one ring of 5 to 7 atoms.In a preferred embodiment, the mordant comprises recurring units having the formula: ##STR2## wherein: R.sup.1 and R.sup.2 each independently represents hydrogen or an alkyl or substituted alkyl group having from 1 to about 6 carbon atoms;Link represents a bivalent linking group; andLIG represents a nitrogen-coordinating ligand as described above.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: July 8, 1986
    Assignee: Eastman Kodak Company
    Inventors: James A. Reczek, Ignazio S. Ponticello, Philip S. Bryan
  • Patent number: 4581314
    Abstract: Photographic elements and diffusion transfer assemblages are described which contain a novel mordant comprising a polymeric backbone having appended thereto nitrogen-coordinating ligands having the formula: ##STR1## wherein D.sup.1, D.sup.2, D.sup.3 each independently represents the atoms necessary to complete an aromatic heterocyclic nucleus having at least one ring of 5 to 7 atoms.In a preferred embodiment, the mordant comprises recurring units having the formula: ##STR2## wherein: R.sup.1 and R.sup.2 each independently represents hydrogen or an alkyl or substituted alkyl group having from 1 to about 6 carbon atoms;Link represents a bivalent linking group; andLIG represents a nitrogen-coordinating ligand as described above.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: April 8, 1986
    Assignee: Eastman Kodak Company
    Inventors: James A. Reczek, Ignazio S. Ponticello, Philip S. Bryan