Patents by Inventor Patrick M. Lambert

Patrick M. Lambert 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).

  • Titanium activated hafnia and/or zirconia host phosphor containing scandium
    Patent number: 4990282
    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: June 27, 1990
    Date of Patent: February 5, 1991
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Tin-activated lithium hafnate phosphor composition and X-ray intensifying screen
    Patent number: 4988881
    Abstract: 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: Grant
    Filed: August 14, 1989
    Date of Patent: January 29, 1991
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • X-ray intensifying screen containing hafnia phosphor
    Patent number: 4988880
    Abstract: 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: Grant
    Filed: February 3, 1989
    Date of Patent: January 29, 1991
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing indium
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing scandium
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing lutetium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing erbium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphur containing holmium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing ytterbium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing neodymium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing gadolinium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing thulium to reduce afterglow
    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
  • X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing samarium to reduce afterglow
    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