Patents by Inventor Leslaw Mleczko

Leslaw Mleczko 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: 20220184855
    Abstract: The invention comprises methods of robotically separating unwanted heteroatom-containing materials from a plastic mixture and catalytically pyrolyzing the resulting mixed plastics to obtain olefins and aromatics. Systems and compositions useful in the catalytic pyrolysis of plastics are also described.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 16, 2022
    Inventors: Leslaw Mleczko, Yu-Ting Cheng, Gregory S. Coil, Harley Freeman
  • Publication number: 20220024040
    Abstract: The invention relates to a method for transferring a pourable medium (10) from a first vessel (12) into a second vessel (14), by means of a robot arm (16), wherein a movement 118) of the robot arm (16) can be controlled by at least one movement parameter (BP), including, inter alia, the following method steps: d) determining the mass of the medium (10) transferred into the second vessel (14) as an actual filling mass (IFM), and also the variation over time of the actual filling mass (IFM) of the medium (30; as an actual mass flow (IMS), by means of a balance 124), c) calculating a correcting mass flow (StMS) as a correcting variable (26) of a first control circuit (28) while taking into account the actual filling mass (FM) and the intended filling mass (SFM), f) using the correcting variable (26) of die first control circuit (28) as a reference variable (SO) of a second control circuit (32) for the purpose that the calculated correcting mass flow (StMS) is used as the intended mass flow (SMS), g) calculating
    Type: Application
    Filed: November 21, 2019
    Publication date: January 27, 2022
    Applicant: Bayer Aktiengesellschaft
    Inventors: Leslaw MLECZKO, Armin SCHWEIGER, Kathrin WEGENER, Carl-Helmut COULON
  • Patent number: 11033874
    Abstract: A reaction chamber for a chemical reactor comprises a casing (100) of the reaction chamber, a floor (200) of the reaction chamber having an opening (300) located in the floor, an agitator shaft (400) located in the chamber and having at least one agitator element (500), connected thereto, wherein the agitator shaft (400), seen in the longitudinal direction, has a beginning (600) and an end (700). In the opening (300) of the floor (200) a removable sleeve (800) is provided, which projects out of the reaction chamber. The sleeve (800) is arranged in alignment with the axis of rotation of the agitator shaft (400). The internal diameter of the sleeve (800) is greater than the diameter of the agitator shaft (400) and the agitator shaft (400), at the beginning (600) thereof and/or at the end (700) thereof, is adapted to absorb reversibly a torque provided by means of a further shaft and/or to transmit a torque to a further shaft.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 15, 2021
    Assignee: Bayer Aktiengesellschaft
    Inventors: Leslaw Mleczko, Sigurd Buchholz, Karl-Robert Boos, Sebastian Falss
  • Patent number: 10577314
    Abstract: The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al2O3 catalyst at low temperatures.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 3, 2020
    Assignee: Novus International, Inc.
    Inventors: Puvin Pichai, James Rolston, Stephan Schubert, Leslaw Mleczko, Jens Assmann, Edwin Gross-Hardt, Pankaj Ajmera
  • Patent number: 10369542
    Abstract: The present invention relates to a multistage stirred reactor, comprising a multiplicity of mutually adjacent reaction chambers and stirring elements for mixing the contents of at least one of the reaction chambers, wherein, between adjacent reaction chambers, there is in each case provided at least one opening that can be closed by means of closure means, such that in the open state there is a fluidic connection between the adjacent reaction chambers and in the closed state the adjacent reaction chambers are separated from one another. At least one of the closure means (300, 310, 320) is connected to an actuation rod (500, 510, 520) that is guided out of the stirred reactor.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: August 6, 2019
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Sebastian Falß, Leslaw Mleczko, Karl-Robert Boos, Sigurd Buchholz
  • Publication number: 20190111406
    Abstract: A reaction chamber for a chemical reactor comprises a casing (100) of the reaction chamber, a floor (200) of the reaction chamber having an opening (300) located in the floor, an agitator shaft (400) located in the chamber and having at least one agitator element (500), connected thereto, wherein the agitator shaft (400), seen in the longitudinal direction, has a beginning (600) and an end (700). In the opening (300) of the floor (200) a removable sleeve (800) is provided, which projects out of the reaction chamber. The sleeve (800) is arranged in alignment with the axis of rotation of the agitator shaft (400). The internal diameter of the sleeve (800) is greater than the diameter of the agitator shaft (400) and the agitator shaft (400), at the beginning (600) thereof and/or at the end (700) thereof, is adapted to absorb reversibly a torque provided by means of a further shaft and/or to transmit a torque to a further shaft.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 18, 2019
    Inventors: Leslaw MLECZKO, Sigurd BUCHHOLZ, Karl-Robert BOOS, Sebastian FALSS
  • Patent number: 10189004
    Abstract: A reaction chamber for a chemical reactor comprises a casing (100) of the reaction chamber, a floor (200) of the reaction chamber having an opening (300) located in the floor, an agitator shaft (400) located in the chamber and having at least one agitator element (500), connected thereto, wherein the agitator shaft (400), seen in the longitudinal direction, has a beginning (600) and an end (700). In the opening (300) of the floor (200) a removable sleeve (800) is provided, which projects out of the reaction chamber. The sleeve (800) is arranged in alignment with the axis of rotation of the agitator shaft (400). The internal diameter of the sleeve (800) is greater than the diameter of the agitator shaft (400) and the agitator shaft (400), at the beginning (600) thereof and/or at the end (700) thereof, is adapted to absorb reversibly a torque provided by means of a further shaft and/or to transmit a torque to a further shaft.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 29, 2019
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Leslaw Mleczko, Sigurd Buchholz, Karl-Robert Boos, Sebastian Falss
  • Publication number: 20180361349
    Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyse the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.
    Type: Application
    Filed: August 28, 2018
    Publication date: December 20, 2018
    Inventors: Leslaw MLECZKO, Aurel WOLF, Ralph SCHELLEN, Konstantinos METAXAS, Jens Stefan ROGGAN
  • Patent number: 10118145
    Abstract: A method of reacting phosgene with a second compound containing one or more of hydroxyl, thil, amino and/or formamide groups, wherein phosgene has a GHS hazard identification of GHS06 and is obtainable from the reaction of carbon monoxide and chlorine and wherein the second compound is capable of a chemical reaction with phosgene is provided.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: November 6, 2018
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Jens Stefan Roggan, Leslaw Mleczko, Konstantinos Metaxas, Michael Gottfried, Ilja Peckermann, Stephan Schubert, Ekkehard Barth
  • Patent number: 10105675
    Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyze the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 23, 2018
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Leslaw Mleczko, Aurel Wolf, Ralf Schellen, Konstantinos Metaxas, Jens Stefan Roggan
  • Publication number: 20170342028
    Abstract: The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al2O3 catalyst at low temperatures.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Inventors: Puvin Pichai, James Rolston, Stephan Schubert, Leslaw Mleczko, Jens Assmann, Edwin Gross-Hart, Pankaj Ajmera
  • Publication number: 20170274341
    Abstract: A method of reacting a first compound with a second compound, wherein the first compound has a GHS hazard identification of GHS06 and is obtainable from the reaction of at least one first fluid precursor compound and one second fluid precursor compound and wherein the second compound is capable of a chemical reaction with the first compound is provided
    Type: Application
    Filed: August 18, 2015
    Publication date: September 28, 2017
    Inventors: JENS STEFAN ROGGAN, LESLAW MLECZKO, KONSTANTINOS METAXAS, MICHAEL GOTTFRIED, IIJA PECKERMANN, STEPHAN SCHUBERT, EKKEHARD BARTH
  • Publication number: 20170274346
    Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyse the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.
    Type: Application
    Filed: August 17, 2015
    Publication date: September 28, 2017
    Inventors: LESLAW MLECZKO, AUREL WOLF, RALF SCHELLEN, KONSTANTINOS METAXAS, JENS STEFAN ROGGAN
  • Publication number: 20170166808
    Abstract: The invention relates to a continuous-flow synthesis process for the preparation of high quality indium phosphide/zinc sulfide core/shell semiconduting nanocrystals in particular quantum dots (QD) conducted in a micro-reaction system comprising at least one mixing chamber connected to one reaction chamber.
    Type: Application
    Filed: February 17, 2017
    Publication date: June 15, 2017
    Inventors: Huachang Lu, Werner Hoheisel, Leslaw Mleczko, Stephan Nowak
  • Publication number: 20170136440
    Abstract: A reaction chamber for a chemical reactor comprises a casing (100) of the reaction chamber, a floor (200) of the reaction chamber having an opening (300) located in the floor, an agitator shaft (400) located in the chamber and having at least one agitator element (500), connected thereto, wherein the agitator shaft (400), seen in the longitudinal direction, has a beginning (600) and an end (700). In the opening (300) of the floor (200) a removable sleeve (800) is provided, which projects out of the reaction chamber. The sleeve (800) is arranged in alignment with the axis of rotation of the agitator shaft (400). The internal diameter of the sleeve (800) is greater than the diameter of the agitator shaft (400) and the agitator shaft (400), at the beginning (600) thereof and/or at the end (700) thereof, is adapted to absorb reversibly a torque provided by means of a further shaft and/or to transmit a torque to a further shaft.
    Type: Application
    Filed: June 15, 2015
    Publication date: May 18, 2017
    Inventors: Leslaw MLECZKO, Sigurd BUCHHOLZ, Karl-Robert BOOS, Sebastian FALSS
  • Publication number: 20170106345
    Abstract: The present invention relates to a multistage stirred reactor, comprising a multiplicity of mutually adjacent reaction chambers and stirring elements for mixing the contents of at least one of the reaction chambers, wherein, between adjacent reaction chambers, there is in each case provided at least one opening that can be closed by means of closure means, such that in the open state there is a fluidic connection between the adjacent reaction chambers and in the closed state the adjacent reaction chambers are separated from one another. At least one of the closure means (300, 310, 320) is connected to an actuation rod (500, 510, 520) that is guided out of the stirred reactor.
    Type: Application
    Filed: April 20, 2015
    Publication date: April 20, 2017
    Inventors: Sebastian FALß, Leslaw MLECZKO, Karl-Robert BOOS, Sigurd BUCHHOLZ
  • Publication number: 20170107634
    Abstract: The present invention relates to an electrochemical process for the reduction of molecular oxygen in alkaline solutions in the presence of nitrogen-doped carbon nanotubes, in which no hydrogen peroxide forms as a by-product of the reduction.
    Type: Application
    Filed: November 18, 2016
    Publication date: April 20, 2017
    Inventors: Jens AßMANN, Aurel WOLF, Leslaw MLECZKO, Alexander KARPENKO, Volker MICHELE
  • Patent number: 9577149
    Abstract: The invention relates to a continuous-flow synthesis process for the preparation of high quality indium phosphide/zinc sulfide core/shell semiconduting nanocrystals in particular quantum dots (QD) conducted in a micro-reaction system comprising at least one mixing chamber connected to one reaction chamber.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: February 21, 2017
    Assignee: Quantum Materials Corporation
    Inventors: Huachang Lu, Werner Hoheisel, Leslaw Mleczko, Stephan Nowak
  • Patent number: 9468913
    Abstract: The present invention relates to a catalyst for preparation of chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the catalyst comprises at least tin dioxide as a support material and at least one ruthenium-containing compound as a catalytically active material, and comprises, as an additional secondary constituent, a compound of an element or an element selected from the group of: Nb, V, Ta, Cr, Mo, Au, In, Sc, Y and lanthanoids, especially La and Ce.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: October 18, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Aurel Wolf, Leslaw Mleczko, Oliver Felix-Karl Schlüter
  • Patent number: 9409779
    Abstract: The present invention relates to a process for the production of carbon nanotubes, in particular those having a diameter of 3-150 nm and an aspect ratio of length:diameter (L:D)>100, by decomposition of hydrocarbons on a heterogeneous catalyst which comprises Mn, Co, preferably also molybdenum, and an inert support material, and the catalyst and the carbon nanotubes themselves and the use thereof.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: August 9, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Sigurd Buchholz, Daniel Gordon Duff, Volker Michele, Leslaw Mleczko, Christian Münnich, Reiner Rudolf, Aurel Wolf