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: 20240117254
    Abstract: A method of producing olefinic and aromatic hydrocarbons from waste plastics comprising feeding a mixture of plastics along with the products of the oxidation of light hydrocarbons to a process in which the feed mixture is catalytically pyrolyzed to produce olefins and aromatics.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 11, 2024
    Inventors: Torren Carlson, Leslaw Mleczko, Omar M. Basha
  • Patent number: 11911913
    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 (30) 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: Grant
    Filed: November 21, 2019
    Date of Patent: February 27, 2024
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Leslaw Mleczko, Armin Schweiger, Kathrin Wegener, Carl-Helmut Coulon
  • Publication number: 20240059805
    Abstract: A process that removes chlorine or other halogens from plastic mixtures by passing a plastic mixture through an extruder, a mixer, and one or more devolatilization vessels.
    Type: Application
    Filed: August 21, 2023
    Publication date: February 22, 2024
    Inventors: William Igoe, Torren Carlson, Leslaw Mleczko
  • Publication number: 20230357106
    Abstract: A process that separates the fillers found in plastics from catalyst and the gases in a fluid bed catalytic pyrolysis process for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX, is described.
    Type: Application
    Filed: May 3, 2023
    Publication date: November 9, 2023
    Inventors: Michael Missalla, Leslaw Mleczko, Karl-Ernst Wirth, Omar M. Basha
  • Publication number: 20230183582
    Abstract: Processes of catalytically pyrolyzing solid hydrocarbonaceous materials in a downflow fluid bed reactor and regenerating the catalyst in an upflow fluidized bed reactor are described. Systems and compositions useful in the catalytic pyrolysis of plastics are also described.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 15, 2023
    Inventors: Omar M. Basha, Leslaw Mleczko, Terry J. Mazanec, Harley Freeman
  • Publication number: 20230174868
    Abstract: A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 8, 2023
    Inventors: Leslaw Mleczko, Raghava Dasarathy, Greg Coil, Yu-Ting Cheng, Collin Schmidt, Jeff Whiting, Rocco Carabetta, Terry Mazanec
  • Patent number: 11584888
    Abstract: A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: February 21, 2023
    Assignees: ANELLOTECH, INC., R PLUS JAPAN LIMITED
    Inventors: Leslaw Mleczko, Raghava Dasarathy, Greg Coil, Yu-Ting Cheng, Collin Schmidt, Jeff Whiting, Rocco Carabetta, Terry Mazanec
  • Publication number: 20220378704
    Abstract: A process for the preparation of a nanoparticulate active ingredient comprises the steps of: a) providing a solvent, a pharmaceutical active ingredient dissolved in the solvent, a liquid antisolvent and a stabilizer which is dissolved in the solvent or in the antisolvent and wherein the antisolvent is miscible in the solvent; b) mixing the solvent, the active ingredient, the antisolvent and the stabilizer in a micromixer, thereby obtaining a suspension comprising a precipitate of the active ingredient, the solvent and the antisolvent. The active ingredient precipitate is present in the form of nanoparticles having an average particle size of ?10 nm to ?999 nm and a particle size distribution, determined by dynamic light scattering (DLS) according to ISO 22412:2017, having a polydispersity index of ?0.2.
    Type: Application
    Filed: October 5, 2020
    Publication date: December 1, 2022
    Inventors: Qingbai CAI, Leslaw MLECZKO, Werner HOHEISEL, Shizhe TIAN, Min FU
  • Publication number: 20220290053
    Abstract: A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 15, 2022
    Inventors: Leslaw Mleczko, Raghava Dasarathy, Greg Coil, Yu-Ting Cheng, Collin Schmidt, Jeff Whiting, Rocco Carabetta, Terry Mazanec
  • 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