Patents by Inventor J. Ramon Vargas

J. Ramon Vargas 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: 8206842
    Abstract: An electroluminescent device including a cathode, an anode, and having therebetween a light-emitting layer including a boron complex represented by Formula (I), wherein: X represents hydrogen or a substituent; V1 through V8 represent hydrogen or an independently selected substituent, provided that adjacent substituents cannot join together to form an aromatic ring group and provided at least one of V2 and V3 represents a substituent; L1 and L2 represent independently selected substituents; and an anthracene compound containing an anthracene nucleus substituted in the 9- and 10-positions with independently selected aryl groups containing from 6 to 24 carbon atoms, and wherein the anthracene nucleus can be further substituted provided the anthracene nucleus does not contain an aromatic substituent in positions 1-8.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 26, 2012
    Assignee: Global Oled Technology LLC
    Inventor: J. Ramon Vargas
  • Patent number: 8147989
    Abstract: The invention provides an OLED device including an anode, a cathode and a green light-emitting layer located therebetween, said light-emitting layer including an anthracene host, a bis-diarylamine 9,10-substituted anthracene and a stabilizer compound which is selected from a quinacridone or a biphenylstyrylamine. Devices of the invention provide improvement in features such as stability and efficiency while maintaining excellent color.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: April 3, 2012
    Assignee: Global OLED Technology LLC
    Inventors: Marina E. Kondakova, Kevin P. Klubek, Margaret J. Helber, Peter G. Bessey, J. Ramon Vargas, Michele L. Ricks
  • Publication number: 20100253210
    Abstract: An electroluminescent device including a cathode, an anode, and having therebetween a light-emitting layer including a boron complex represented by Formula (I), wherein: X represents hydrogen or a substituent; V1 through V8 represent hydrogen or an independently selected substituent, provided that adjacent substituents cannot join together to form an aromatic ring group and provided at least one of V2 and V3 represents a substituent; L1 and L2 represent independently selected substituents; and an anthracene compound containing an anthracene nucleus substituted in the 9- and 10-positions with independently selected aryl groups containing from 6 to 24 carbon atoms, and wherein the anthracene nucleus can be further substituted provided the anthracene nucleus does not contain an aromatic substituent in positions 1-8.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventor: J. Ramon Vargas
  • Patent number: 7733009
    Abstract: An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: June 8, 2010
    Assignee: Global OLED Technology LLC
    Inventors: Denis Y. Kondakov, Scott R. Conley, Kevin P. Klubek, J. Ramon Vargas
  • Patent number: 7390617
    Abstract: The invention includes a process for forming a laser pixel array useful with a pump-beam, comprising: a) forming a layer containing a formamide of an amino dye compound on a support wherein the layer absorbs light outside the laser wavelength and predominantly outside the pump-beam wavelength range; and b) subjecting the layer to UV radiation in the areas of the layer where it is desired to be free of pixels for a time sufficient to shift the absorption envelope of the areas into the pump-beam wavelength range. The invention also provides for unimolecularly forming an image or an information record and a composition of matter. The invention provides methods for forming filters, images or information records having a smooth surface and in particular for forming a pixel region pattern for use with an Organic VCSEL that would ease manufacturing.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 24, 2008
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Denis Y. Kondakov, Keith B. Kahen
  • Patent number: 7329466
    Abstract: Disclosed is an OLED device comprising a light-emitting layer containing a light emitting bis(azinyl)methene boron complex compound comprising a complex system of at least five fused rings and bearing, on at least one ring carbon or nitrogen, a substituent sufficient to provide a wavelength of maximum emission of less than 520 nm as measured at a concentration of <10?3M in ethyl acetate solvent.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: February 12, 2008
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Denis Y. Kondakov
  • Patent number: 7238436
    Abstract: A stabilized white-light-emitting OLED device includes an anode, a cathode, a light-emitting layer disposed between the anode and the cathode, and a stabilizing substituted perylene material, so that the lifetime of the white-light-emitting OLED device is increased.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: July 3, 2007
    Assignee: Eastman Kodak Company
    Inventors: Tukaram K. Hatwar, J. Ramon Vargas, Viktor V. Jarikov
  • Patent number: 7175922
    Abstract: An organic light emitting device includes a substrate, an anode and a cathode disposed over the substrate, and a luminescent layer disposed between the anode and the cathode wherein the luminescent layer includes a host and at least one dopant. The host of the luminescent layer is selected to include a solid organic material comprising a mixture of at least two components, one of which contains at least one perylene carbocyclic ring structure or at least one mono-aza-perylene or poly-aza-perylene ring structure and is capable of forming both monomer state and an aggregate state.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: February 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Viktor V. Jarikov, J. Ramon Vargas
  • Patent number: 7074502
    Abstract: A phosphorescent electroluminescent device comprising a light-emitting layer containing a host material and a phosphorescent light-emitting material wherein the host material comprises a boron compound containing at least one boron-nitrogen bond. Such devices provide useful light emissions.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: July 11, 2006
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Joseph C. Deaton
  • Patent number: 7074503
    Abstract: Disclosed is an electroluminescent device comprising a light emitting layer comprising a boron complex wherein the boron is bonded to a nitrogen atom of a first 5-membered heteroaromatic ring group and to a nitrogen atom of a second 5-membered heteroaromatic ring group, provided that the 5-membered rings are further connected by a methene or an imine bridge to form a six-membered ring, and provided further that at least one of the 5-membered rings contains at least one additional heteroatom that is divalent or trivalent.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: July 11, 2006
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, J. Ramon Vargas
  • Patent number: 7075231
    Abstract: A tandem OLED includes an anode, a cathode, and at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-injecting layer, one hole-transporting layer, one organic light-emitting layer, one electron-transporting layer, and one electron-injecting layer. The OLED also includes at least one intermediate connector, wherein each of the intermediate connectors includes at least one layer, and wherein each of the intermediate connectors is disposed between electroluminescent units, wherein the thickness of each layer in each of the electroluminescent units and the intermediate connectors is selected to satisfy the test condition that the voltage drop from the anode to the cathode is less than 4.0 V×N (the number of electroluminescent units) at 20 mA/cm2.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: July 11, 2006
    Assignee: Eastman Kodak Company
    Inventors: Liang-Sheng Liao, Tukaram K. Hatwar, Kevin P. Klubek, J. Ramon Vargas, Dustin L. Comfort
  • Patent number: 7070868
    Abstract: Disclosed is an electroluminescent device comprising a light emitting layer comprising a boron complex wherein the boron is bonded to a nitrogen atom of a 6-membered heteroaromatic ring group and to a nitrogen atom of a 5-membered heteroaromatic ring group, provided that the 5- and 6-membered heteroaromatic ring groups are further connected by an imine group, and provided that the 5-membered heteroaromatic ring group contains at least one additional heteroatom that is divalent or trivalent, and a process or device employing the device.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: July 4, 2006
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, J. Ramon Vargas, Scott R. Conley
  • Patent number: 6991859
    Abstract: A cascaded organic electroluminescent device includes an anode, a cathode, and a plurality of organic electroluminescent units disposed between the anode and the cathode, wherein the organic electroluminescent units comprise at least a hole-transporting layer and an electron-transporting layer. The device also includes a connecting unit disposed between each adjacent organic electroluminescent unit, wherein the connecting unit comprises, in sequence, an n-type doped organic layer, and a p-type doped organic layer wherein the p-type doped organic layer includes a dihydrophenazine derivative compound.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: January 31, 2006
    Assignee: Eastman Kodak Company
    Inventors: Kevin P. Klubek, Liang-Sheng Liao, Ching W. Tang, J. Ramon Vargas
  • Patent number: 6919140
    Abstract: A multilayer electroluminescent device comprising a cathode, an anode, a light emitting layer, and a layer disposed between the cathode and anode containing a dihydrophenazine compound is disclosed.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: July 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Kevin P. Klubek, J. Ramon Vargas, Liang-Sheng Liao
  • Patent number: 6885026
    Abstract: Disclosed is an electroluminescent device comprising a light emitting layer comprising a boron complex wherein the boron is bonded to a nitrogen atom of a 6-membered heteroaromatic ring group and to a nitrogen atom of a 5-membered heteroaromatic ring group, provided that the 5- and 6-membered heteroaromatic ring groups are further connected by a methene bridge, and provided further that the 5-membered heteroaromatic ring contains at least one additional heteroatom that is divalent or trivalent. Also disclosed is a device containing the electroluminescent device and a process for emitting light using the device.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: April 26, 2005
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, J. Ramon Vargas
  • Patent number: 6876684
    Abstract: An organic vertical cavity laser light producing device includes a bottom dielectric stack reflective to light over a predetermined range of wavelengths; an organic active region for producing laser light, and having an organic active region including emissive material; and a top dielectric stack spaced from the bottom dielectric stack and reflective to light over a predetermined range of wavelengths. Pump-beam light is transmitted and introduced into the organic active region through at least one of the dielectric stacks. The organic active region includes one or more periodic gain region(s) and organic spacer layers disposed on either side of the periodic gain region(s) and arranged so that the periodic gain region(s) is aligned with the antinodes of the device's standing wave electromagnetic field, and wherein the spacer layers are substantially transparent to the laser light.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: April 5, 2005
    Assignee: Eastman Kodak Company
    Inventors: Keith B. Kahen, J. Ramon Vargas, Denis Y. Kondakov, Christopher T. Brown, Lelia Cosimbescu, Viktor Jarikov
  • Patent number: 6869699
    Abstract: A p-type mixture for use in an electronic device including a host including a dihydrophenazine compound, and a dopant provided in the host.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: March 22, 2005
    Assignee: Eastman Kodak Company
    Inventors: Kevin P. Klubek, Liang-Sheng Liao, J. Ramon Vargas, Ching W. Tang
  • Patent number: 6846620
    Abstract: Photographic elements are disclosed comprising a silver halide emulsion layer having associated therewith a dye forming coupler and a compound of the following Formula I: R1R2N—C(O)—(R)p—C(O)—NR3R4 wherein R represents a hydrocarbon linking group; p=0 or 1; and each of R1, R2, R3 and R4 independently represents an aromatic, cyclic, linear or branched chain hydrocarbon group, or R1 and R2 or R3 and R4 combine together to form a ring with the associated nitrogen atom to which they are attached; with the proviso (i) at least one of R1, R2, R3 and R4 comprises an aromatic, cyclic, secondary alkyl, or otherwise or branched hydrocarbon group, or (ii) at least R1 and R2 or R3 and R4 combine together to form a ring with the associated nitrogen atom. Photographic elements of the present invention upon exposure and photographic processing exhibit good activity and yield dye images that have unexpected and substantial improvements in the stability of the formed image dyes.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 25, 2005
    Inventors: Albert J. Mura, Jr., Gary M. Russo, J. Ramon Vargas, Shari L. Eiff
  • Publication number: 20040185297
    Abstract: A cascaded organic electroluminescent device includes an anode, a cathode, and a plurality of organic electroluminescent units disposed between the anode and the cathode, wherein the organic electroluminescent units comprise at least a hole-transporting layer and an electron-transporting layer. The device also includes a connecting unit disposed between each adjacent organic electroluminescent unit, wherein the connecting unit comprises, in sequence, an n-type doped organic layer, and a p-type doped organic layer wherein the p-type doped organic layer includes a dihydrophenazine derivative compound.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 23, 2004
    Applicant: Eastman Kodak Company
    Inventors: Kevin P. Klubek, Liang-Sheng Liao, Ching W. Tang, J. Ramon Vargas
  • Publication number: 20040183066
    Abstract: A p-type mixture for use in an electronic device including a host including a dihydrophenazine compound, and a dopant provided in the host.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 23, 2004
    Applicant: Eastman Kodak Company
    Inventors: Kevin P. Klubek, Liang-Sheng Liao, J. Ramon Vargas, Ching W. Tang