Patents by Inventor Michael Pohl

Michael Pohl 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: 10239995
    Abstract: The invention provides a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added onto H-functional starter substance in a reactor in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture comprising the polyether carbonate polyol is obtained, and wherein (?) the reaction mixture obtained in step (?) remains in the reactor or is transferred continuously into a postreactor, wherein the content of free alkylene oxide in the reaction mixture is reduced in each case in the manner of a postreaction, characterized in that a component K is added during the postreaction, component K being selected from at least one compound containing a p
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 26, 2019
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Jörg Hofmann, Thomas Ernst Müller, Michael Pohl, Walter Leitner
  • Publication number: 20180291148
    Abstract: The invention relates to a method for producing polyether carbonate polyols by agglomeration of alkyl oxides and carbon dioxide on carboxylic acid in the presence of a double metal cyanide (DMC) catalyst, wherein one or more carboxylic acids are continually added to the reactor during the reaction, characterized in that the carboxylic acid is at least difunctional and has a pKa value greater than or equal to 1.5, and the adding of the one or more carboxylic acids occurs such that, at any time in the method according to the invention, the molar concentration of unconverted carboxylic acid in the reaction mixture does not exceed a value in the amount of 0.001 mol/g multiplied by the mass of the catalyst used per liter of reaction mixture, specified in grams, and two carboxylic acid groups present in the same molecule are separated from each other at least by one carbon atom. The method further relates to the polyether carbonate polyols obtained according to the invention.
    Type: Application
    Filed: May 24, 2016
    Publication date: October 11, 2018
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Michael Pohl, Muhammad Afzal Subhani, Walter Leitner
  • Publication number: 20180127284
    Abstract: The present invention relates to a process for preparing an aqueous suspension comprising precipitated calcium carbonate. The invention further relates to an aqueous suspension comprising precipitated calcium carbonate as well as a partially dewatered or essentially completely dried precipitated calcium carbonate obtainable by the process and the use of the aqueous suspension comprising precipitated calcium carbonate and/or the partially dewatered or essentially completely dried precipitated calcium carbonate in paper making, paper coating, plastic, agricultural, adhesives, sealants and/or paint applications.
    Type: Application
    Filed: May 24, 2016
    Publication date: May 10, 2018
    Inventor: Michael Pohl
  • Patent number: 9959231
    Abstract: A data bus coupler has a primary bus connection for a primary bus and a plurality of secondary bus connections each for a terminal. The coupler includes a slave unit connected to the primary bus connection and a master unit connectable to the secondary bus connections and configured for sending telegrams to and receiving telegrams from the secondary bus connections, and a control unit. Communication switching means, under control of the control unit, connect each secondary bus connection to/from the master unit.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: May 1, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Pohle
  • Patent number: 9944535
    Abstract: The present invention relates to a process for the production of a precipitated divalent metal ion carbonate product from a divalent metal ion carbonate which was recovered from waste, the precipitated divalent metal ion carbonate product having an improved brightness, the process comprising the steps of: providing a low-purity divalent metal ion carbonate material, the divalent metal ion carbonate material being recovered from waste; calcining the divalent metal ion carbonate material in order to obtain a divalent metal ion oxide; slaking the divalent metal ion oxide in order to obtain an aqueous suspension of a divalent metal ion hydroxide; carbonating the aqueous suspension of the divalent metal ion hydroxide with a carbon dioxide containing compound in order to obtain fine precipitated divalent metal ion carbonate particles; post-treating the fine precipitated divalent metal ion carbonate particles to obtain fine discrete precipitated divalent metal ion carbonate particles; adding the fine discrete precip
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: April 17, 2018
    Assignee: Omya International AG
    Inventors: Michael Pohl, Thomas Schmölzer
  • Publication number: 20180009941
    Abstract: The invention provides a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added onto H-functional starter substance in a reactor in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture comprising the polyether carbonate polyol is obtained, and wherein (?) the reaction mixture obtained in step (?) remains in the reactor or is transferred continuously into a postreactor, wherein the content of free alkylene oxide in the reaction mixture is reduced in each case in the manner of a postreaction, characterized in that a component K is added during the postreaction, component K being selected from at least one compound containing a p
    Type: Application
    Filed: January 27, 2016
    Publication date: January 11, 2018
    Inventors: Jörg Hofmann, Thomas Ernst Müller, Michael Pohl, Walter Leitner
  • Publication number: 20170283619
    Abstract: The present invention relates to a process for the preparation of an aqueous suspension comprising at least one calcium carbonate-comprising material, the calcium carbonate-comprising material having a ratio of particles having an average particle size d80 value to particles having an average particle size d20 value [d80/d20] in the range from 1.5 to 4 and the use of the calcium carbonate-comprising material in paper and board applications, in cosmetics, in caulks and sealants, in adhesives, in paints and coatings, in fibre applications, in plastics applications or for the replacement of PCC in general.
    Type: Application
    Filed: September 28, 2015
    Publication date: October 5, 2017
    Inventors: Michael Pohl, Christian Rainer, Martin Brunner, Jürgen Spehn, Michael Tinkl, Dennis Werner, Armelle Senti-Wenk, Emmanuel Goutard
  • Patent number: 9725329
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, based upon moles of Ca(OH)2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.5 to 5% by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: August 8, 2017
    Assignee: Omya International AG
    Inventors: Michael Pohl, Christian Rainer, Gernot Primosch
  • Patent number: 9725330
    Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: August 8, 2017
    Assignee: Omya International AG
    Inventors: Bahman Tavakkoli, Jörg Sötemann, Michael Pohl, Thomas Schmölzer
  • Publication number: 20170158532
    Abstract: The invention relates to a process for the selective precipitation of at least one conjugate base and/or at least one metal cation from an acidic preparation by neutralization as well as the use of an aqueous slurry of at least one calcium carbonate source for the selective precipitation of at least one conjugate base and/or at least one metal cation from an acidic preparation by neutralization.
    Type: Application
    Filed: June 30, 2015
    Publication date: June 8, 2017
    Inventors: Martine Poffet, Michael Skovby, Herbert Riepl, Michael Pohl
  • Publication number: 20160264785
    Abstract: The present invention relates to a process for the preparation of an aqueous suspension comprising at least one calcium carbonate-containing material. The invention further relates to calcium carbonate-containing material having a ratio of particles having an average particle size d80 value to particles having an average particle size d20 value [d80/d20] of ?2.50 and the use of the calcium carbonate-containing material in paper and board applications, in cosmetics, in caulks and sealants, in paints and coatings, or in plastics applications.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 15, 2016
    Inventors: Michael Pohl, Christian Rainer
  • Publication number: 20160229702
    Abstract: The present invention relates to a process for the production of a precipitated divalent metal ion carbonate product from a divalent metal ion carbonate which was recovered from waste, the precipitated divalent metal ion carbonate product having an improved brightness, the process comprising the steps of: providing a low-purity divalent metal ion carbonate material, the divalent metal ion carbonate material being recovered from waste; calcining the divalent metal ion carbonate material in order to obtain a divalent metal ion oxide; slaking the divalent metal ion oxide in order to obtain an aqueous suspension of a divalent metal ion hydroxide; carbonating the aqueous suspension of the divalent metal ion hydroxide with a carbon dioxide containing compound in order to obtain fine precipitated divalent metal ion carbonate particles; post-treating the fine precipitated divalent metal ion carbonate particles to obtain fine discrete precipitated divalent metal ion carbonate particles; adding the fine discrete precip
    Type: Application
    Filed: April 20, 2016
    Publication date: August 11, 2016
    Applicant: Omya International AG
    Inventors: Michael Pohl, Thomas Schmölzer
  • Patent number: 9409788
    Abstract: The present invention relates to a process for the production of a precipitated divalent metal ion carbonate product from a divalent metalion carbonate which was recovered from waste, the precipitated divalent metal ion carbonate product having an improved brightness, the process comprising the steps of: providing a low-purity divalent metal ion carbonate material, the divalent metal ion carbonate material being recovered from waste; calcining the divalent metal ion carbonate material in order to obtain a divalent metal ion oxide; slaking the divalent metal ion oxide in order to obtain an aqueous suspension of a divalent metal ion hydroxide; carbonating the aqueous suspension of the divalent metal ion hydroxide with a carbon dioxide containing compound in order to obtain fine precipitated divalent metal ion carbonate particles; post-treating the fine precipitated divalent metal ion carbonate particles to obtain fine discrete precipitated divalent metal ion carbonate particles; adding the fine discrete precipi
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: August 9, 2016
    Assignee: Omya International AG
    Inventors: Michael Pohl, Thomas Schmölzer
  • Publication number: 20160193336
    Abstract: Methods for administering nitric oxide (NO) in a plasma state to a treatment site are disclosed. A discrete stream of matter is placed in a plasma state, in which the stream has, as part of its content, a desired concentration of NO. The discrete stream of matter is directed at a site of action to achieve a therapeutic result.
    Type: Application
    Filed: October 30, 2014
    Publication date: July 7, 2016
    Inventors: Howard Nelson, Alexander Dolgopolsky, Michael D. Preston, Michael Pohl, Victor N. Vasilets
  • Publication number: 20150183654
    Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof.
    Type: Application
    Filed: February 23, 2015
    Publication date: July 2, 2015
    Applicant: Omya International AG
    Inventors: Bahman Tavakkoli, Jörg Sötemann, Michael Pohl, Thomas Schmölzer
  • Patent number: 9061920
    Abstract: The present invention relates to a process for preparing hydromagnesite in an aqueous environment. The invention further relates to such hydromagnesite having a specific platy-like morphology in combination with a specific average particle size and to their use as minerals, fillers and pigments in the paper, paint, rubber and plastics industries and to the use as flame-retardant.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: June 23, 2015
    Assignee: Omya International AG
    Inventors: Michael Pohl, Christian Rainer, Markus Esser
  • Publication number: 20150166358
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, based upon moles of Ca(OH)2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.5 to 5% by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.
    Type: Application
    Filed: February 10, 2015
    Publication date: June 18, 2015
    Applicant: Omya International AG
    Inventors: Michael Pohl, Christian Rainer, Gernot Primosch
  • Patent number: 9017631
    Abstract: Process to prepare a precipitated calcium carbonate (PCC) comprising the following steps: (i) providing CaO, which is optionally partially or fully slaked (hereafter “calcium source”); ({umlaut over (?)}) providing a CO2-comprising gas; ({umlaut over (?)}i) contacting said calcium source of step (i) and said CO2-comprising gas of step (ii) in an aqueous environment in a reactor, in one or more steps; (iv) obtaining a PCC-comprising suspension; (v) optionally concentrating said PCC-comprising suspension of step (iv); (vi) optionally adding dispersing additives to the suspension of step (iv) and/or (v); (vii) optionally grinding the product of step iv, v or vi.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: April 28, 2015
    Assignee: Omya International AG
    Inventors: Patrick Arthur Charles Gane, Matthias Buri, Michael Pohl
  • Patent number: 8999284
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, based upon moles of Ca(OH)2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.5 to 5% by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 7, 2015
    Assignee: Omya International AG
    Inventors: Michael Pohl, Christian Rainer, Gernot Primosch
  • Patent number: 8992875
    Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 31, 2015
    Assignee: Omya International AG
    Inventors: Bahman Tavakkoli, Jörg Sötemann, Michael Pohl, Thomas Schmölzer