Patents by Inventor Stefan Hoefle

Stefan Hoefle 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: 11453402
    Abstract: The present disclosure relates to a method for determining the fatigue of a driver of a motor vehicle, wherein the fatigue is determined while taking into account the steering behavior of the driver, characterized in that the method includes the following steps: determination of a hysteresis of the steering system or the fatigue detection system, and taking into account the detected hysteresis in the determination of the fatigue of the driver. Furthermore, the disclosure relates to a device that is set up to execute the method.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 27, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Stiller, Matthias Rupp, Stefan Hoefle, Valentin Loeffelmann
  • Patent number: 11292478
    Abstract: A method for detecting drowsiness of a driver for a driver assistance system of a vehicle includes reading in at least a first indicator signal that represents a first drowsiness parameter of the driver determined by a first drowsiness-detection device of the vehicle, and a second indicator signal that represents a second drowsiness parameter of the driver determined by a second drowsiness-detection device of the vehicle, and optionally a third indicator signal that represents a third drowsiness parameter of the driver determined by a third drowsiness-detection device of the vehicle; ascertaining validities of the indicator signals; and determining a drowsiness signal that represents the detected drowsiness of the driver utilizing the indicator signals and the validities.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 5, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Stiller, Stefan Hoefle, Valentin Loeffelmann
  • Patent number: 10937982
    Abstract: The present invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a second TADF material SB, wherein EB transfers energy to SB and SB emits TADF with an emission maximum between 420 and 500 nm.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: March 2, 2021
    Assignee: CYNORA GMBH
    Inventors: Andreas Haldi, Georgios Liaptsis, Harald Fluegge, Patrick Pingel, Stefan Hoefle
  • Patent number: 10804481
    Abstract: The present invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a second TADF material SB, wherein SB transfers energy to EB and EB emits TADF with an emission maximum between 420 and 500 nm.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: October 13, 2020
    Assignee: CYNORA GMBH
    Inventors: Andreas Haldi, Georgios Liaptsis, Harald Fluegge, Patrick Pingel, Stefan Hoefle
  • Publication number: 20200317211
    Abstract: A method for detecting drowsiness of a driver for a driver assistance system of a vehicle includes reading in at least a first indicator signal that represents a first drowsiness parameter of the driver determined by a first drowsiness-detection device of the vehicle, and a second indicator signal that represents a second drowsiness parameter of the driver determined by a second drowsiness-detection device of the vehicle, and optionally a third indicator signal that represents a third drowsiness parameter of the driver determined by a third drowsiness-detection device of the vehicle; ascertaining validities of the indicator signals; and determining a drowsiness signal that represents the detected drowsiness of the driver utilizing the indicator signals and the validities.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 8, 2020
    Inventors: Benedikt Stiller, Stefan Hoefle, Valentin Loeffelmann
  • Publication number: 20200189605
    Abstract: The present disclosure relates to a method for determining the fatigue of a driver of a motor vehicle, wherein the fatigue is determined while taking into account the steering behavior of the driver, characterized in that the method includes the following steps: determination of a hysteresis of the steering system or the fatigue detection system, and taking into account the detected hysteresis in the determination of the fatigue of the driver. Furthermore, the disclosure relates to a device that is set up to execute the method.
    Type: Application
    Filed: November 7, 2019
    Publication date: June 18, 2020
    Inventors: Benedikt Stiller, Matthias Rupp, Stefan Hoefle, Valentin Loeffelmann
  • Patent number: 10629815
    Abstract: The invention relates to new conjugated semiconducting polymers containing thermally cleavable side groups. The thermally cleavable side groups are selected from among carbonate groups and carbamate groups. By thermally cleaving side groups, the solubility or the polymers can be reduced in a targeted manner. The polymers are used as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, organic photodetectors (OPDs), organic light emitting diodes (OLEDs), and organic field effect transistors (OFETs).
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: April 21, 2020
    Assignees: INNOVATIONLAB GMBH, KARLSRUHER INSTITUT FUER TECHNOLOGIE, TECHNISCHE UNIVERSITAET BRAUNSCHWEIG, MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V.
    Inventors: Marius Kuhn, Torben Adermann, Manuel Hamburger, Klaus Muellen, Janusz Schinke, Alexander Colsmann, Stefan Hoefle, Ulrich Lemmer
  • Publication number: 20180323394
    Abstract: The present invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a second TADF material SB, wherein SB transfers energy to EB and EB emits TADF with an emission maximum between 420 and 500 nm.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 8, 2018
    Inventors: Andreas HALDI, Georgios LIAPTSIS, Harald FLUEGGE, Patrick PINGEL, Stefan HOEFLE
  • Publication number: 20180323395
    Abstract: The present invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a second TADF material SB, wherein EB transfers energy to SB and SB emits TADF with an emission maximum between 420 and 500 nm.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 8, 2018
    Inventors: Andreas HALDI, Georgios LIAPTSIS, Harald FLUEGGE, Patrick PINGEL, Stefan HOEFLE
  • Patent number: 9960390
    Abstract: A method of producing an optoelectronic device includes A) providing a substrate, B) applying a first electrode to the substrate, C) applying a first organic layer stack to the first electrode, D) producing a charge-generating layer stack on the first organic layer stack, E) applying a second organic layer stack to the charge-generating layer stack, and F) applying a second electrode to the second organic layer stack, wherein step D) includes D1) applying a solution of a first metal oxide precursor to the first organic layer stack, D2) generating a first charge-generating layer comprising a first metal oxide, D3) applying a solution of a second metal oxide precursor to the first charge-generating layer, and D4) generating a second charge-generating layer comprising a second metal oxide.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: May 1, 2018
    Assignee: OSRAM OLED GmbH
    Inventors: Stefan Höfle, Alexander Colsmann, Manuel Reinhard, Uli Lemmer
  • Publication number: 20170331043
    Abstract: The invention relates to new conjugated semiconducting polymers containing thermally cleavable side groups. The thermally cleavable side groups are selected from among carbonate groups and carbamate groups, By thermally cleaving side groups, the solubility or the polymers can he reduced in a targeted manner. The polymers are used as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, organic photodetectors (OPDs), organic light emitling diodes (OLEDs), and organic field effect transistors (OFETs).
    Type: Application
    Filed: February 10, 2015
    Publication date: November 16, 2017
    Applicants: INNOVATIONLAB GMBH, KARLSRUHER INSTITUT FUER TECHNOLOGIE, TECHNISCHE UNIVERSITAET BRAUNSCHWEIG, MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENS CHAFTEN E.V.
    Inventors: Marius Kuhn, Torben Adermann, Manuel Hamburger, Klaus Muellen, Janusz Schinke, Alexander Colsmann, Stefan Hoefle, Ulrich Lemmer
  • Patent number: 9599043
    Abstract: A method for stopping an internal combustion engine, in which an air flow supplied via an air metering device, in particular a throttle valve of the internal combustion engine, is reduced after a stopping request has been ascertained, an undershoot point in time is ascertained, at which an ascertained speed of the internal combustion engine falls below a pre-definable speed threshold value, after the undershoot point in time, the air flow supplied via the air metering device of the internal combustion engine is increased again, the predefinable speed threshold value being selected in such a way that an intake cylinder no longer enters a compression stroke after the increase of the supplied air flow until the internal combustion engine is at a standstill, a degree of opening of the air metering device to increase the supplied air flow being selected as a function of a coasting speed of the internal combustion engine.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: March 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Karthik Rai, Stefan Hoefle
  • Publication number: 20160204388
    Abstract: A method of producing an optoelectronic device includes A) providing a substrate, B) applying a first electrode to the substrate, C) applying a first organic layer stack to the first electrode, D) producing a charge-generating layer stack on the first organic layer stack, E) applying a second organic layer stack to the charge-generating layer stack, and F) applying a second electrode to the second organic layer stack, wherein step D) includes D1) applying a solution of a first metal oxide precursor to the first organic layer stack, D2) generating a first charge-generating layer comprising a first metal oxide, D3) applying a solution of a second metal oxide precursor to the first charge-generating layer, and D4) generating a second charge-generating layer comprising a second metal oxide.
    Type: Application
    Filed: August 27, 2014
    Publication date: July 14, 2016
    Applicant: OSRAM OLED GMBH
    Inventors: Stefan Höfle, Alexander Colsmann, Manuel Reinhard, Uli Lemmer
  • Publication number: 20140278004
    Abstract: A method for stopping an internal combustion engine, in which an air flow supplied via an air metering device, in particular a throttle valve of the internal combustion engine, is reduced after a stopping request has been ascertained, an undershoot point in time is ascertained, at which an ascertained speed of the internal combustion engine falls below a pre-definable speed threshold value, after the undershoot point in time, the air flow supplied via the air metering device of the internal combustion engine is increased again, the predefinable speed threshold value being selected in such a way that an intake cylinder no longer enters a compression stroke after the increase of the supplied air flow until the internal combustion engine is at a standstill, a degree of opening of the air metering device to increase the supplied air flow being selected as a function of a coasting speed of the internal combustion engine.
    Type: Application
    Filed: September 21, 2012
    Publication date: September 18, 2014
    Inventors: Karthik Rai, Stefan Hoefle