Patents by Inventor Jon E. Littman

Jon E. Littman 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: 5405709
    Abstract: An internal junction organic electroluminescent device comprises, in sequence, an anode, an organic electroluminescent medium, and a cathode, the organic electroluminescent medium further comprising a hole injecting and transporting zone contiguous with the anode and an electron injecting and transporting zone contiguous with the cathode, the electron injecting and transporting zone further comprising an electron injecting layer in contact with the cathode, characterized in that the portion of the organic electroluminescent medium that is interposed between the electron injecting layer and the hole injecting and transporting zone is capable of emitting white light in response to hole-electron recombination and comprises a fluorescent material and a mixed ligand aluminum chelate of the formula(R.sup.s --Q).sub.2 --Al--O--Lwhere Q in each occurrence represents a substituted 8-quinolinolato ligand, R.sup.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: April 11, 1995
    Assignee: Eastman Kodak Company
    Inventors: Jon E. Littman, Steve A. VanSlyke
  • Patent number: 5294869
    Abstract: A multicolor image display device includes an array consisting of a plurality of light emitting pixels arranged in two intersecting sets of parallel files, the pixels in a first set of parallel files forming columns and the pixels in a second set of parallel files forming rows on a common electrically insulative light transmissive support. The pixels in each file of one of the first or second set of parallel files contain and are joined by a common light transmissive first electrode overlying and laterally spaced on the support; an organic electroluminescent medium overlies the first electrode, and the pixels in each file of the other of the first or second set of parallel files contain and are joined by a laterally spaced common second electrode.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: March 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: Ching W. Tang, Jon E. Littman
  • Patent number: 5073446
    Abstract: An organic electroluminescent device is disclosed which is protected from dark spot formation. The device is comprised of, in sequence, a support, an anode, an organic electroluminescent medium, and a cathode. The cathode is comprised of an electron injecting layer contacting the organic electroluminescent medium containing a plurality of metals at least one of which has a work function of less than that of indium. The cathode is comprised of a layer of fused metal particles containing at least 80 percent of indium and having a mean diameter of less the 1 .mu.m and a coefficient of variation of less than 20 percent.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: December 17, 1991
    Assignee: Eastman Kodak Company
    Inventors: Michael Scozzafava, Ching W. Tang, Jon E. Littman
  • Patent number: 5059861
    Abstract: An organic electroluminescent device is disclosed which is protected from dark spot formation. The device is comprised of, in sequence, a support, an anode, an organic electroluminescent medium, and a cathode containing a plurality of metals other than alkali metals. The cathode is comprised of a capping layer containing at least one alkaline earth or rare earth metal and, interposed between the capping layer and the organic electroluminescent medium, an electron injecting layer containing at least one metal having a work function of less than 4.0, but exhibiting a higher work function than the alkaline earth or rare earth metals in the capping layer.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: October 22, 1991
    Assignee: Eastman Kodak Company
    Inventors: Jon E. Littman, Michael Scozzafava
  • Patent number: 4542095
    Abstract: Antistatic compositions are disclosed comprising a binder and a nonionic surface-active polymer having polymerized alkylene oxide monomers and an alkali metal salt characterized in that the composition is heterogeneous, comprises on a dry basis, at least 7 weight percent polymerized alkylene oxide monomers and the binder is selected from the group consisting of a particulate material and a mixture of particulate materials with hydrophilic materials.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: September 17, 1985
    Assignee: Eastman Kodak Company
    Inventors: David J. Steklenski, Jon E. Littman