Patents by Inventor André Lehmann

André Lehmann 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).

  • Publication number: 20200335286
    Abstract: A switching device including a frame, a first fixed contact member having a first contact area, and a first movable contact member having a first contact arm provided with a contact area. The first movable contact member is adapted to pivot relative to the frame around a first pivoting axis between a first position and a second position. The switching device includes a spreader member that is adapted to provide a first intermediate position for the first movable contact member in which a projection of the contact area of the first contact arm overlaps at least partially with a projection of the first contact area on a switch plane perpendicular to the first pivoting axis while the contact area of the first contact arm is spaced apart from the first contact area.
    Type: Application
    Filed: April 14, 2020
    Publication date: October 22, 2020
    Inventors: Andre Nordman, Benjamin Lehmann, Juha-Matti Rajala
  • Publication number: 20200305807
    Abstract: An image acquisition apparatus includes: a positioner controller communicatively coupled to a positioner, wherein the positioner controller is configured to generate a control signal to cause the positioner to rectilinearly translate a patient support relative to an imager, and/or to rectilinearly translate the imager relative to the patient support; an imaging controller configured to operate the imager to generate a first plurality of two-dimensional images for a patient while the patient is supported by the patient support, and while the positioner rectilinearly translates the patient support and/or the imager; and an image processing unit configured to obtain the first plurality of two-dimensional images and arrange the two-dimensional images relative to each other to obtain a first composite image.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Applicant: Varian Medical Systems International AG
    Inventors: Steven ROSE, Mathias LEHMANN, Andres GRAF
  • Publication number: 20200206657
    Abstract: A filter device for transmission oil, having a filter element (24) which can be inserted into a transmission oil pan (70) and the filter medium (32) of which separates an unfiltered side from a filtrate chamber, which is connected in a fluid-conveying manner to an outlet (38, 50, 72), to which a negative-pressure device such as a suction oil pump, can be connected, wherein the filter medium (32) of the filter element (24) has at least one structural layer (46) having a predetermined surface area and predeterminable filter properties and having at least one further structural layer (44, 60) having predeterminable filter properties, wherein the surface area of the further structural layer (44; 60) is different from the surface area of the first structural layer (46), and wherein the respective structural layers (44, 46, 60) encompass an inner filter cavity (30), is characterized in that the respective structural layers (44, 46, 60) are pleated having the same type of pleats, in that the pleated structural layer
    Type: Application
    Filed: September 6, 2018
    Publication date: July 2, 2020
    Inventors: Matthias SCHWENDER, Edwin KOCH, Daniel KLEEMANN, Ute LEHMANN, Alexander NENNO, Andre Michael SCHNEIDER
  • Publication number: 20200202273
    Abstract: Techniques are described for workflow management, including automatically deriving characteristics of a user task node in a workflow based on an analysis of other workflow elements such as conditional sequence connectors. In some implementations, elements of a workflow presented in the modeler user interface of a workflow management platform are analyzed, and element(s) of the workflow are automatically and dynamically modified based on the analysis. For example, a workflow may include a first user task that is connected to subsequent node(s) in the workflow, such as other user task(s) downstream from the first user task. The first user task may be connected to each subsequent node by a conditional sequence connector. The condition information for each connector can be extracted from the workflow information and used to automatically modify the first user task to include decision branches for each element of condition information extracted from a respective connector.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Volker Lehmann, Andre Hofeditz, Tobias Breyer, Krassimir Kondarev
  • Patent number: 10626523
    Abstract: The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: April 21, 2020
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johnannes Ganster, André Lehmann
  • Publication number: 20190186051
    Abstract: The present invention relates to a method for producing a multifilament yarn from a melt of a copolymer of polyacrylicnitrile. The method is characterized in that a multifilament yarn is produced by means of pressing a melt of a copolymer through a spinning nozzle and is subsequently stretched at least tenfold. The present invention further relates to a correspondingly produced multifilament yarn.
    Type: Application
    Filed: May 11, 2016
    Publication date: June 20, 2019
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: André LEHMANN, Evgueni TARKHANOV
  • Publication number: 20190085484
    Abstract: The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.
    Type: Application
    Filed: October 6, 2016
    Publication date: March 21, 2019
    Applicant: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • Publication number: 20190032250
    Abstract: The invention relates to a method for producing a precursor fiber which is suitable for further processing into carbon and activated carbon fibers. The method is a wet spinning method in which a spinning solution consisting of lignin or lignin derivatives, cellulose carbamate, and alkali lye are pressed through the holes of a nozzle and introduced directly into a coagulation bath. The precursor fibers falling into the bath can undergo different additional method steps: they can be stretched, post-treated, dried at an increased temperature, and wound. Because the precursor fibers constitute an inexpensive starting material, the precursor fibers can be used in connection with the production of carbon and activated carbon fibers.
    Type: Application
    Filed: January 26, 2016
    Publication date: January 31, 2019
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Johannes GANSTER, André LEHMANN, Robert PROTZ, Jens ERDMANN
  • Publication number: 20180305844
    Abstract: The present invention relates to a method for manufacturing a shaped body comprising lignin which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. The present invention addresses the problem of lignin leaching into a precipitation bath. The solution to this problem is a novel method for minimizing the loss of lignin through the addition of certain salts into the precipitation bath.
    Type: Application
    Filed: October 6, 2016
    Publication date: October 25, 2018
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • Patent number: 10006152
    Abstract: The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibers according to the wet- or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibers.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: June 26, 2018
    Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.
    Inventors: André Lehmann, Horst Ebeling, Hans-Peter Fink
  • Publication number: 20180163326
    Abstract: The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.
    Type: Application
    Filed: June 9, 2016
    Publication date: June 14, 2018
    Applicant: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johnannes Ganster, André Lehmann
  • Patent number: 9631298
    Abstract: The invention relates to a method for the production of a precursor for the production of carbon—and activated carbon fibers according to the wet—or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon—and activated carbon fibers.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: April 25, 2017
    Assignee: Stora Enso OYJ
    Inventors: Andre Lehmann, Horst Ebeling, Hans-Peter Fink
  • Patent number: 9188507
    Abstract: A steering test stand has a first steering device with a measurement unit measuring the steering device torque value and applies forces to the steering device and control unit and has a control unit connected to a computer for controlling actuators. The computer simulates static and/or dynamic properties of a motor vehicle and transmits simulated target values to the control unit. A test driver unit comprises a second steering device as a force feedback steering wheel and a connection between the test driver unit and the computer, transmits a second steering angle set on the force feedback steering wheel. A second connection between the test driver unit and computer transmits steering torque measured on the first steering device to the test unit, such that the second steering device sets a second steering torque value on the force feedback steering wheel as a function of the first value.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: November 17, 2015
    Assignee: dSPACE digital signal processing and control engineering GmbH
    Inventors: Thomas Schulte, Andre Lehmann
  • Patent number: 9181352
    Abstract: The invention relates to a method for producing polysaccharide esters or polysaccharide mixed esters, in which a polysaccharide or a modified polysaccharide is converted with at least one esterification reagent and at least one halogenide component, an imidazole compound which is generated in situ being used as catalyst.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: November 10, 2015
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Bert Volkert, André Lehmann
  • Publication number: 20150037241
    Abstract: The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibres according to the wet- or air-gap spinning method, in which a solution of lignin and a fibre-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibres.
    Type: Application
    Filed: May 16, 2012
    Publication date: February 5, 2015
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: André Lehmann, Horst Ebeling, Hans-Peter Fink
  • Publication number: 20140194603
    Abstract: The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibres according to the wet- or air-gap spinning method, in which a solution of lignin and a fibre-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibres.
    Type: Application
    Filed: May 16, 2012
    Publication date: July 10, 2014
    Applicant: STORA ENSO OYJ
    Inventors: Andre Lehmann, Horst Ebeling, Hans-Peter Fink
  • Publication number: 20130030720
    Abstract: A steering test stand has a first steering device with a measurement unit measuring the steering device torque value and applies forces to the steering device and control unit and has a control unit connected to a computer for controlling actuators. The computer simulates static and/or dynamic properties of a motor vehicle and transmits simulated target values to the control unit. A test driver unit comprises a second steering device as a force feedback steering wheel and a connection between the test driver unit and the computer, transmits a second steering angle set on the force feedback steering wheel. A second connection between the test driver unit and computer transmits steering torque measured on the first steering device to the test unit, such that the second steering device sets a second steering torque value on the force feedback steering wheel as a function of the first value.
    Type: Application
    Filed: January 30, 2012
    Publication date: January 31, 2013
    Inventors: Thomas Schulte, André Lehmann
  • Publication number: 20120172587
    Abstract: The invention relates to a method for producing polysaccharide esters or polysaccharide mixed esters, in which a polysaccharide or a modified polysaccharide is converted with at least one esterification reagent and at least one halogenide component, an imidazole compound which is generated in situ being used as catalyst.
    Type: Application
    Filed: May 26, 2010
    Publication date: July 5, 2012
    Applicant: Frauhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Bert Volkert, André Lehmann
  • Publication number: 20120088909
    Abstract: Process for esterifying, etherifying or silylating polysaccharide or derivatives thereof by means of an esterifying reagent, etherifying reagent or silylating reagent in the presence of an ionic liquid, in which (a) the process is carried out under heterogeneous reaction conditions, and (b) the amount of ionic liquid is 2% to 25% by weight, based on the polysaccharide or derivatives thereof.
    Type: Application
    Filed: March 2, 2010
    Publication date: April 12, 2012
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung E.V.
    Inventors: André Lehmann, Bert Volkert
  • Publication number: 20100158831
    Abstract: The present invention relates to a method for the production of a viscosity regulator by introducing hydrophobic and hydrophilic groups into a starch molecule. The invention also relates to viscosity regulators produced in this manner and the use thereof. The viscosity regulators according to the invention can be used as emulsifiers or as thickening agents of surfactant-containing systems, e.g. in cosmetic or pharmaceutical preparations.
    Type: Application
    Filed: March 28, 2008
    Publication date: June 24, 2010
    Inventors: Bert Volkert, André Lehmann, Heiko Nerenz, Andreas Achrader