Patents by Inventor Jürgen Pfeiffer

Jürgen Pfeiffer 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: 11936038
    Abstract: An anode active material for lithium ion batteries includes one or more unaggregated silicon particles having a mass-based chlorine content of from 5 to 200 ppm and a volume-weighted particle size distribution having diameter percentiles d50 of from 0.5 ?m to 10.0 ?m.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: March 19, 2024
    Assignee: Wacker Chemie AG
    Inventors: Jürgen Pfeiffer, Eckhard Hanelt, Harald Hertlein, Karl Hesse, Robert Maurer
  • Publication number: 20230416907
    Abstract: Silicon-containing materials along with process for producing and uses for the same. The process includes reacting the silicon-containing materials in a fluidized bed reactor by deposition of silicon from at least one silicon precursor in pores and on the surface of porous particles. A fluidizing gas stream is provided within the fluidized bed reactor that is fully or partly induced to oscillate in a pulsed manner and propagates in the form of a wave and acts on the fluidized bed so as to form a homogeneously fluidized bed as a pulsed gas stream so as to form a homogeneously fluidized bed having a fluidization index FI of at least 0.95. Where the fluidizing gas stream has a superficial velocity which is above a measured minimum fluidization velocity of the pulsed gas stream and where the pulsation is combined with mechanical stirring as a further fluidizing aid.
    Type: Application
    Filed: November 30, 2020
    Publication date: December 28, 2023
    Applicant: Wacker Chemie AG
    Inventors: Michael FRICKE, Moritz BECKER, Claudia KLEINLEIN, Jürgen PFEIFFER, Sebastian SUCKOW
  • Publication number: 20230278877
    Abstract: Silicon carbon composite particles and anode materials for use within lithium-ion batteries utilizing the silicon carbon composite particles. Where the silicon carbon composite particles have an alkali metal or alkaline earth metal concentration of 0.05 to 10 wt% and a pH > 7.5.
    Type: Application
    Filed: April 16, 2021
    Publication date: September 7, 2023
    Applicant: Wacker Chemie AG
    Inventors: Alena KALYAKINA, Christoph DRÄGER, Claudia KLEINLEIN, Jürgen PFEIFFER, Jan TILLMANN
  • Publication number: 20230129415
    Abstract: An anode active material for use within an anode of a lithium-ion battery along with a method or process for preparing the same. Where the anode active material includes one or more non-aggregated silicon particles having BET surface areas of 0.2 to 10.0 m2/g (determination according to DIN 66131 (with nitrogen), a chloride content of 220 to 5000 ppm and a volume-weighted particle size distribution having diameter percentiles d50 of 0.5 ?m to 10.0 ?m.
    Type: Application
    Filed: February 17, 2020
    Publication date: April 27, 2023
    Applicant: Wacker Chemie AG
    Inventors: Jürgen Pfeiffer, Harald Hertlein, Benedikt Köninger, Sebastian Liebischer
  • Patent number: 11378153
    Abstract: A centrifugal pendulum for damping rotational irregularities of a driveshaft of an internal combustion engine, having a carrier flange element connectable indirectly or directly to the driveshaft, and having multiple pendulum elements displaceable in relation to the carrier flange element, and guided via rollers in pendulum paths. Each pendulum element is displaceable in relation to the carrier flange element in the circumferential direction between a first and a second stop position. At least one friction element having defined thermal expansion properties, which are different in particular from the carrier flange element and/or the pendulum elements, is associated with the carrier flange element, and is designed and arranged in such a way that in a defined temperature range of the centrifugal pendulum, upon a movement of at least one pendulum element corresponding to the friction element in the direction of a stop position.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 5, 2022
    Assignee: AUDI AG
    Inventors: Herbert Meyer, Thomas Fischer, Andreas Bruns, Peter Klumpp, Jürgen Pfeiffer, Michael Buck, Thomas Forster, Lutz Pahlich
  • Publication number: 20210376315
    Abstract: An anode active material for lithium ion batteries includes one or more unaggregated silicon particles having a mass-based chlorine content of from 5 to 200 ppm and a volume-weighted particle size distribution having diameter percentiles d50 of from 0.5 ?m to 10.0 ?m.
    Type: Application
    Filed: October 2, 2018
    Publication date: December 2, 2021
    Applicant: Wacker Chemie AG
    Inventors: Jürgen Pfeiffer, Eckhard Hanelt, Harald Hertlein, Karl Hesse, Robert Maurer
  • Publication number: 20210079974
    Abstract: A centrifugal pendulum for damping rotational irregularities of a driveshaft of an internal combustion engine, having a carrier flange element connectable indirectly or directly to the driveshaft, and having multiple pendulum elements displaceable in relation to the carrier flange element, and guided via rollers in pendulum paths. Each pendulum element is displaceable in relation to the carrier flange element in the circumferential direction between a first and a second stop position. At least one friction element having defined thermal expansion properties, which are different in particular from the carrier flange element and/or the pendulum elements, is associated with the carrier flange element, and is designed and arranged in such a way that in a defined temperature range of the centrifugal pendulum, upon a movement of at least one pendulum element corresponding to the friction element in the direction of a stop position.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 18, 2021
    Applicant: AUDI AG
    Inventors: Herbert MEYER, Thomas FISCHER, Andreas BRUNS, Peter KLUMPP, Jürgen PFEIFFER, Michael BUCK, Thomas FORSTER, Lutz PAHLICH
  • Patent number: 9726129
    Abstract: A method for determining a fuel fraction in the oil of an oil circuit (6), in particular in oil of an oil circuit (6) of an internal combustion engine (7), wherein a variably adjustable oil delivery pump (1) is provided in the oil circuit, which oil delivery pump can be actuated by means of a control unit (4), wherein the control unit performs an adjustment of parameters and/or adaptation values of the oil delivery pump as a function of the viscosity of the oil, wherein a determination of the fuel fraction in the oil is performed on the basis of the parameters and/or adaptation values.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: August 8, 2017
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Juergen Pfeiffer
  • Patent number: 9569968
    Abstract: A method for the automated braking and/or steering of a vehicle uses at least one sensor system for detecting the vehicle's surroundings, a potential collision object in the vehicle's surroundings, and a relative speed of the vehicle relative to the potential collision object. The activation and/or the sequence of an automated steering intervention and/or an automated braking intervention is determined based on the relative speed. The braking intervention is activated at first when the relative speed is below or equal to a predefined threshold, and the steering intervention is activated at first when the relative speed is above the predefined threshold.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 14, 2017
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Matthias Strauss, Juergen Pfeiffer, Stefan Lueke
  • Patent number: 9250157
    Abstract: A method for detecting rotational speed/torque fluctuations, in particular patterns of such fluctuations, of a drive device, in particular in a motor vehicle, includes the following steps: detecting a critical rotational speed situation by comparing a measured actual rotational speed with specified characteristic rotational speeds; detecting a local rotational speed minimum and a local rotational speed maximum (local rotational speed variables); analyzing the local rotational speed variables by generating local rotational speed characteristic values, such as a local amplitude and a local frequency preferably; directly or indirectly determining the duration of a local vibration time period, wherein substantially constant local rotational speed characteristic values are present within the time period; and describing a local vibration pattern, the pattern exhibiting at least the local amplitude, local frequency, or the local vibration time period.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: February 2, 2016
    Assignees: AUDI AG, AVL DEUTSCHLAND GMBH
    Inventors: Mathias Felber, Jürgen Pfeiffer
  • Publication number: 20150302751
    Abstract: A method for the automated braking and steering of a vehicle is specified, wherein at least one system for detecting the vehicle's surroundings is provided. The sequence of an automated steering and/or braking intervention is determined based on a relative speed with respect to a collision object.
    Type: Application
    Filed: December 18, 2013
    Publication date: October 22, 2015
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Matthias STRAUSS, Juergen PFEIFFER, Stefan LUEKE
  • Publication number: 20140309851
    Abstract: A method for detecting rotational speed/torque fluctuations, in particular patterns of such fluctuations, of a drive device, in particular in a motor vehicle, includes the following steps: detecting a critical rotational speed situation by comparing a measured actual rotational speed with specified characteristic rotational speeds; detecting a local rotational speed minimum and a local rotational speed maximum (local rotational speed variables); analyzing the local rotational speed variables by generating local rotational speed characteristic values, such as a local amplitude and a local frequency preferably; directly or indirectly determining the duration of a local vibration time period, wherein substantially constant local rotational speed characteristic values are present within the time period; and describing a local vibration pattern, the pattern exhibiting at least the local amplitude, local frequency, or the local vibration time period.
    Type: Application
    Filed: October 9, 2012
    Publication date: October 16, 2014
    Inventors: Mathias Felber, Jürgen Pfeiffer
  • Publication number: 20140174408
    Abstract: A method for determining a fuel fraction in the oil of an oil circuit (6), in particular in oil of an oil circuit (6) of an internal combustion engine (7), wherein a variably adjustable oil delivery pump (1) is provided in the oil circuit, which oil delivery pump can be actuated by means of a control unit (4), wherein the control unit performs an adjustment of parameters and/or adaptation values of the oil delivery pump as a function of the viscosity of the oil, wherein a determination of the fuel fraction in the oil is performed on the basis of the parameters and/or adaptation values.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Juergen PFEIFFER
  • Patent number: 8669388
    Abstract: Amino group-containing organosilicon compounds containing no or only a small fraction of Si-bonded hydroxyl groups are prepared by preparing an organosilicon compound containing amino groups and Si-bonded hydroxyl groups by equilibration in the presence of an equilibration catalyst, and reacting the resultant product with a cyclic silazane. The products are particularly useful as a monomer or macromere for the preparation of high molecular weight organic polymers containing organosilicon blocks.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 11, 2014
    Assignee: Wacker Chemie AG
    Inventors: Ernst Selbertinger, Juergen Pfeiffer
  • Patent number: 8629193
    Abstract: Thin porous moldings of silicone copolymers, suitable for use as membranes in separation processes, are prepared by forming a solution or suspension of silicone copolymer in two solvents L1 and L2, casting the suspension or solution, and removing solvent L1 to form a silicone copolymer rich phase A, effecting structure formation, and then removing solvent L2 and residues of solvent L2 to form a thin porous molding.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 14, 2014
    Assignee: Wacker Chemie AG
    Inventors: Manfred Hoelzl, Frauke Kirschbaum, Robert Maurer, Juergen Pfeiffer, Konrad Alfons Wierer
  • Patent number: 8440770
    Abstract: Polyurea/urethane silicone elastomers with improved properties are obtained by addition of solid polyurea/urethane silicone low molecular weight oligomers.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: May 14, 2013
    Assignee: Wacker Chemie AG
    Inventor: Juergen Pfeiffer
  • Patent number: 8333179
    Abstract: The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant, wherein a fuel mass flow outgassing from the engine oil is ascertained and is taken into account via a map-based pilot control during the metering of a quantity of fuel supplied to the internal combustion engine and wherein a fuel/air ratio supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for a mass flow offset determined from the deviation of the fuel/air ratio supplied to the internal combustion engine from a nominal value to be taken into account when the metering of the quantity of fuel supplied to the internal combustion engine occurs during an effective duration of the map-based pilot control.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: December 18, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Georg Mallebrein, Federico Buganza, Carlos Koster, Kai Jakobs, Juergen Pfeiffer, Emilie Hincker-Piocelle, Pierre-Yves Crepin
  • Publication number: 20120296062
    Abstract: Thin porous moldings of silicone copolymers, suitable for use as membranes in separation processes, are prepared by forming a solution or suspension of silicone copolymer in two solvents L1 and L2, casting the suspension or solution, and removing solvent L1 to form a silicone copolymer rich phase A, effecting structure formation, and then removing solvent L2 and residues of solvent L2 to form a thin porous molding.
    Type: Application
    Filed: January 19, 2011
    Publication date: November 22, 2012
    Applicant: WACKER CHEMIE AG
    Inventors: Manfred Hoelzl, Frauke Kirschbaum, Robert Maurer, Juergen Pfeiffer, Konrad Alfons Wierer
  • Publication number: 20120232217
    Abstract: Polyurea/urethane silicone elastomers with improved properties are obtained by addition of solid polyurea/urethane silicone low molecular weight oligomers.
    Type: Application
    Filed: November 16, 2010
    Publication date: September 13, 2012
    Applicant: WACKER CHEMIE AG
    Inventor: Juergen Pfeiffer
  • Patent number: 8084531
    Abstract: Particles useful in curable coating systems are functionalized on their surface with a blocked isocyanate functionality. The blocked isocyanate is generated by reacting an organosilane having an oxygen, sulfur or nitrogen atom ? to the silyl group, or having a cyclic structure containing N or O in the ring, attached directly to silicon.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: December 27, 2011
    Assignee: Wacker Chemie AG
    Inventors: Christoph Briehn, Torsten Gottschalk-Gaudig, Juergen Pfeiffer, Volker Stanjek, Richard Weidner