Patents by Inventor Michael G. Helander

Michael G. Helander 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: 9139917
    Abstract: A nanocomposite material that is both transparent and electrically conductive is provided. The nanocomposite comprises a nanoporous matrix, preferably formed from nanoparticles, that is internally coated with a transparent conductive material to define an internal conductive path within the nanocomposite. The nanocomposite is substantially transparent over a defined spectral range that preferably includes at least a portion of the visible spectrum, and preferably comprises pores with a mean diameter of less than approximately 25 nm. A bilayer may be formed by depositing a layer of a transparent conductive material on top of a nanocomposite layer, or by depositing a second layer of a nanocomposite having different optical properties. The nanocomposites formed using a combination of sequential and/or concurrent deposition techniques are correspondingly discrete and/or continuously varying structures.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: September 22, 2015
    Inventors: Paul Gregory O'Brien, Daniel P. Puzzo, Nazir Pyarali Kherani, Geoffrey Alan Ozin, Alongkarn Chutinan, Zheng-Hong Lu, Michael G. Helander
  • Publication number: 20140326970
    Abstract: New carbazole-based compounds are provided that are useful as host materials for singlelayer and multilayer organic light-emitting diode (OLED) devices. Highly efficient single-layer OLEDs have been demonstrated using new N-heterocyclic carbazole-based host materials. Phosphorescent OLEDs with a structure of ITO/MoO3/host/host:dopant/host/Cs2CO3/Al have been fabricated in which the new host materials act simultaneously as electron-transport, holetransport and host layer. Using this design, devices with maximum current and external quantum efficiencies of 92.2 cd and 26.8% were achieved, the highest reported to date for a single-layer OLED.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 6, 2014
    Inventors: Zachary M. Hudson, Suning Wang, Michael G. Helander, Zhibin Wang, Zheng-Hong Lu
  • Publication number: 20120305061
    Abstract: A nanocomposite material that is both transparent and electrically conductive is provided. The nanocomposite comprises a nanoporous matrix, preferably formed from nanoparticles, that is internally coated with a transparent conductive material to define an internal conductive path within the nanocomposite. The nanocomposite is substantially transparent over a defined spectral range that preferably includes at least a portion of the visible spectrum, and preferably comprises pores with a mean diameter of less than approximately 25 nm. A bilayer may be formed by depositing a layer of a transparent conductive material on top of a nanocomposite layer, or by depositing a second layer of a nanocomposite having different optical properties. The nanocomposites formed using a combination of sequential and/or concurrent deposition techniques are correspondingly discrete and/or continuously varying structures.
    Type: Application
    Filed: October 15, 2010
    Publication date: December 6, 2012
    Inventors: Paul Gregory O'Brien, Daniel P. Puzzo, Nazir Pyarali Kherani, Geoffrey Alan Ozin, Alongkarn Chutinan, Zheng-Hong Lu, Michael G. Helander