Patents by Inventor Ed Sundaram Ramakrishnan

Ed Sundaram Ramakrishnan 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: 8383455
    Abstract: An electronic device can include an organic active layer and an electrode. In one aspect, the electrode can further include a first layer that is conductive, and a second layer that is conductive. The second layer can include a defect extending at least partly through a thickness of the second conductive layer. The electrode can also include a third layer lying within and substantially filling the defect, wherein each of the second and third layers includes a same metallic element. In another aspect, a process for forming an electronic device can include forming an organic active layer and forming a first layer that is conductive and is part of an electrode. The process can also include forming a second layer and exposing the second layer to a first plasma to form a first compound from the second layer.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: February 26, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Ed Sundaram Ramakrishnan, Shiva Prakash
  • Publication number: 20120178208
    Abstract: An electronic device can include an organic active layer and an electrode. In one aspect, the electrode can further include a first layer that is conductive, and a second layer that is conductive. The second layer can include a defect extending at least partly through a thickness of the second conductive layer. The electrode can also include a third layer lying within and substantially filling the defect, wherein each of the second and third layers includes a same metallic element. In another aspect, a process for forming an electronic device can include forming an organic active layer and forming a first layer that is conductive and is part of an electrode. The process can also include forming a second layer and exposing the second layer to a first plasma to form a first compound from the second layer.
    Type: Application
    Filed: March 19, 2012
    Publication date: July 12, 2012
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: ED SUNDARAM RAMAKRISHNAN, Shiva Prakash
  • Patent number: 8173995
    Abstract: An electronic device can include an organic active layer and an electrode. In one aspect, the electrode can further include a first layer that is conductive, and a second layer that is conductive. The second layer can include a defect extending at least partly through a thickness of the second conductive layer. The electrode can also include a third layer lying within and substantially filling the defect, wherein each of the second and third layers includes a same metallic element. In another aspect, a process for forming an electronic device can include forming an organic active layer and forming a first layer that is conductive and is part of an electrode. The process can also include forming a second layer and exposing the second layer to a first plasma to form a first compound from the second layer.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 8, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ed Sundaram Ramakrishnan, Shiva Prakash
  • Patent number: 7815818
    Abstract: Compositions comprising at least one conductive polymer and an organic cation are provided, and methods for making the same.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: October 19, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Che-Hsiung Hsu, Ed Sundaram Ramakrishnan, Dmitry Kolosov
  • Publication number: 20090250665
    Abstract: Compositions comprising at least one conductive polymer and an organic cation are provided, and methods for making the same.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 8, 2009
    Inventors: Che-Hsiung Hsu, Ed Sundaram Ramakrishnan, Dmitry Kolosov
  • Patent number: 7586622
    Abstract: A method for measuring a layer of a device is provided. In an embodiment, a set of baseline reflectance profiles may be generated from a corresponding set of baseline devices. Each of the baseline devices may include a layer with a known thickness. A reflectance profile may also be generated from the device, which may include a layer with an unknown thickness. The reflectance profile generated from the device may then be compared to the set of reflectance profiles generated from the set of the baseline devices to determine the thickness of the layer of the device.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: September 8, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ed Sundaram Ramakrishnan, Alberto Goenaga
  • Patent number: 7563392
    Abstract: Compositions comprising at least one conductive polymer and an organic cation are provided, and methods for making the same.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: July 21, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Che-Hsiung Hsu, Ed Sundaram Ramakrishnan, Dmitry Kolosov
  • Patent number: 7071614
    Abstract: An efficient organic light emitting diode (OLED) device—incorporating a stack of thin films comprising a cathode, electron transport layer, hole modulating conductive layer, host layer, electron modulating conductive layer, hole transport layer, hole injection layer and a transparent anode layer—has increased recombination efficiency to generate substantial amount of light. The electron modulating electrode and hole modulating electrode embedded in the stack are applied with appropriate electrical bias to contain the electrons and holes respectively inside the host layer to enhance recombination and consequently light output.
    Type: Grant
    Filed: June 26, 2004
    Date of Patent: July 4, 2006
    Assignee: Organic Lighting Technologies LLC
    Inventors: Munisamy Anandan, Ed Sundaram Ramakrishnan