Patents by Inventor Matthew K. Mathai

Matthew K. Mathai 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).

  • Radiation emitting device
    Patent number: 8610114
    Abstract: A radiation emitting device comprising a first electrode, which emits first charge carriers having a first charge during operation, a first charge carrier transporting layer, which comprises a fluorescent substance, a second charge carrier transporting layer, which contains a phosphorescent substance, and a second electrode, which emits second charge carriers having a second charge during operation, wherein during operation the second charge carrier transporting layer is largely free of first charge carriers.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 17, 2013
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Vi-En Choong, Stelios A. Choulis, Matthew K. Mathai
  • Charge injection and transport layers
    Patent number: 8383454
    Abstract: Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: February 26, 2013
    Assignee: Plextronics, Inc.
    Inventors: Chris T. Brown, Matthew K. Mathai, Venkataramanan Seshadri
  • Radiation Emitting Device
    Publication number: 20120153305
    Abstract: A radiation emitting device comprising a first electrode, which emits first charge carriers having a first charge during operation, a first charge carrier transporting layer, which comprises a fluorescent substance, a second charge carrier transporting layer, which contains a phosphorescent substance, and a second electrode, which emits second charge carriers having a second charge during operation, wherein during operation the second charge carrier transporting layer is largely free of first charge carriers.
    Type: Application
    Filed: February 28, 2012
    Publication date: June 21, 2012
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Vi-En CHOONG, Stelios A. Choulis, Matthew K. Mathai
  • Radiation emitting device
    Publication number: 20090039294
    Abstract: A radiation emitting device comprising a first electrode, which emits first charge carriers having a first charge during operation, a first charge carrier transporting layer, which comprises a fluorescent substance, a second charge carrier transporting layer, which contains a phosphorescent substance, and a second electrode, which emits second charge carriers having a second charge during operation, wherein during operation the second charge carrier transporting layer is largely free of first charge carriers.
    Type: Application
    Filed: June 6, 2008
    Publication date: February 12, 2009
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Vi-En Choong, Stelios A. Choulis, Matthew K. Mathai