Patents by Inventor Markus Wohlgenannt

Markus Wohlgenannt 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: 9865660
    Abstract: An optoelectronic device which can read magnetically stored information, and convert it into optical light signals using organic or “plastic” semiconductors is described. Such a device may use OLEDs, and may be termed an “organic magneto-optic transducer” (OMOT). An OMOT device can read magnetically stored information, and convert it into optical light signals. The OMOT may provide benefits such as non-volatile storage, flexible films, reduced cost, and operation at room temperature.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 9, 2018
    Assignee: University of Iowa Research Foundation
    Inventors: Markus Wohlgenannt, Michael Flatte, Andrew Kent, Fujian Wang, Nicholas Harmon, Ferran Macia Bros
  • Publication number: 20160197133
    Abstract: An optoelectronic device which can read magnetically stored information, and convert it into optical light signals using organic or “plastic” semiconductors is described. Such a device may use OLEDs, and may be termed an “organic magneto-optic transducer” (OMOT). An OMOT device can read magnetically stored information, and convert it into optical light signals. The OMOT may provide benefits such as non-volatile storage, flexible films, reduced cost, and operation at room temperature.
    Type: Application
    Filed: August 25, 2015
    Publication date: July 7, 2016
    Inventors: MARKUS WOHLGENANNT, Michael Flatte, Andrew Kent, Fujian Wang, Nicholas Harmon, Ferran Macia Bros
  • Patent number: 8077152
    Abstract: The instant disclosure provides and describes a magneto resistive element comprised of a first electrode; a second electrode; and a semi conductive/conductive organic layer disposed between the first and second electrodes, wherein the magneto resistive element has a predetermined resistance (R). The magneto resistive elements provide a magneto resistive response when influenced by an applied magnetic field. The magneto resistive elements can be integrated into a variety of systems including, without limitation, magnetic field detection systems and display devices.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: December 13, 2011
    Assignee: University of Iowa Research Foundation
    Inventors: Markus Wohlgenannt, Thomas Francis, Ömer Mermer, Govindarajan Veeraraghavan
  • Patent number: 7682707
    Abstract: The maximum luminous efficiency of organic light-emitting materials is increased through spin-dependent processing. The technique is applicable to all electro-luminescent processes in which light is produced by singlet exciton decay, and all devices which use such effects, including LEDs, super-radiant devices, amplified stimulated emission devices, lasers, other optical microcavity devices, electrically pumped optical amplifiers, and phosphorescence (Ph) based light emitting devices. In preferred embodiments, the emissive material is doped with an impurity, or otherwise modified, to increase the spin-lattice relaxation rate (i.e., decrease the spin-lattice time), and hence raise the efficiency of the device. The material may be a polymer, oligomer, small molecule, single crystal, molecular crystal, or fullerene. The impurity is preferably a magnetic or paramagnetic substance.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 23, 2010
    Assignee: University of Utah
    Inventors: Z. Valy Vardeny, Markus Wohlgenannt
  • Publication number: 20060091991
    Abstract: The instant disclosure provides and describes a magneto resistive element comprised of a first electrode; a second electrode; and a semi conductive/conductive organic layer disposed between the first and second electrodes, wherein the magneto resistive element has a predetermined resistance (R). The magneto resistive elements provide a magneto resistive response when influenced by an applied magnetic field. The magneto resistive elements can be integrated into a variety of systems including, without limitation, magnetic field detection systems and display devices.
    Type: Application
    Filed: October 15, 2004
    Publication date: May 4, 2006
    Inventors: Markus Wohlgenannt, Thomas Francis, Omer Mermer, Govindarajan Veeraraghavan
  • Publication number: 20050191521
    Abstract: The maximum luminous efficiency of organic light-emitting materials is increased through spin-dependent processing. The technique is applicable to all electro-luminescent processes in which light is produced by singlet exciton decay, and all devices which use such effects, including LEDs, super-radiant devices, amplified stimulated emission devices, lasers, other optical microcavity devices, electrically pumped optical amplifiers, and phosphorescence (Ph) based light emitting devices. In preferred embodiments, the emissive material is doped with an impurity, or otherwise modified, to increase the spin-lattice relaxation rate (i.e., decrease the spin-lattice time), and hence raise the efficiency of the device. The material may be a polymer, oligomer, small molecule, single crystal, molecular crystal, or fullerene. The impurity is preferably a magnetic or paramagnetic substance.
    Type: Application
    Filed: April 20, 2005
    Publication date: September 1, 2005
    Inventors: Z. Vardeny, Markus Wohlgenannt
  • Publication number: 20020093006
    Abstract: The maximum luminous efficiency of organic light-emitting materials is increased through spin-dependent processing. The technique is applicable to all electro-luminescent processes in which light is produced by singlet exciton decay, and all devices which use such effects, including LEDs, super-radiant devices, amplified stimulated emission devices, lasers, other optical microcavity devices, electrically pumped optical amplifiers, and phosphorescence (Ph) based light emitting devices. In preferred embodiments, the emissive material is doped with an impurity, or otherwise modified, to increase the spin-lattice relaxation rate (i.e., decrease the spin-lattice time), and hence raise the efficiency of the device. The material may be a polymer, oligomer, small molecule, single crystal, molecular crystal, or fullerene. The impurity is preferably a magnetic or paramagnetic substance.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 18, 2002
    Inventors: Z. Valy Vardeny, Markus Wohlgenannt