Patents by Inventor Mathieu Skrzypczak

Mathieu Skrzypczak 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: 20220106194
    Abstract: The present invention refers to a process for producing nano precipitated calcium carbonate (nano-PCC), as well as to the nano precipitated calcium carbonate (nano-PCC) obtained by such a process and a system for producing the nano precipitated calcium carbonate (nano-PCC) comprising at least one dry mill, preferably a dry sandmill. Furthermore, the present invention refers to the use of the nano precipitated calcium carbonate (nano-PCC) as well as to the use of the inventive system for producing nano precipitated calcium carbonate (nano-PCC).
    Type: Application
    Filed: February 14, 2020
    Publication date: April 7, 2022
    Inventors: Luis PEDROSO, Holger SPIEGEL, Mathieu SKRZYPCZAK
  • Patent number: 11111388
    Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: September 7, 2021
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
  • Publication number: 20200270462
    Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 27, 2020
    Applicant: Omya International AG
    Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
  • Patent number: 10676620
    Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: June 9, 2020
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
  • Patent number: 10584038
    Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate allowing for a more sustainable and cost-efficient use of milk of lime. The obtainable products show good optical properties as well as fine particle size distributions.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: March 10, 2020
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Marc Maurer, Mathieu Skrzypczak, Luis Pedroso, Holger Spiegel
  • Patent number: 10343929
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) 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, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 9, 2019
    Assignee: Omya International AG
    Inventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
  • Publication number: 20180222765
    Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Application
    Filed: April 3, 2018
    Publication date: August 9, 2018
    Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
  • Publication number: 20180201789
    Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.
    Type: Application
    Filed: July 29, 2016
    Publication date: July 19, 2018
    Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
  • Patent number: 10000388
    Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 19, 2018
    Assignees: Omya International AG, Coatex
    Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
  • Patent number: 9981855
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick lime to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide gas to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: May 29, 2018
    Assignee: Omya International AG
    Inventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
  • Publication number: 20170355610
    Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate allowing for a more sustainable and cost-efficient use of milk of lime. The obtainable products show good optical properties as well as fine particle size distributions.
    Type: Application
    Filed: December 8, 2015
    Publication date: December 14, 2017
    Inventors: Marc Maurer, Mathieu Skrzypczak, Luis Pedroso, Holger Spiegel
  • Patent number: 9776884
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) 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, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: October 3, 2017
    Assignee: Omya International AG
    Inventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
  • Publication number: 20170137299
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) 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, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Applicant: Omya International AG
    Inventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
  • Publication number: 20170050862
    Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Application
    Filed: April 30, 2015
    Publication date: February 23, 2017
    Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
  • Patent number: 9428398
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick time to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide as to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: August 30, 2016
    Assignee: Omya International AG
    Inventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
  • Patent number: 9371241
    Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6,000 ?S/cm.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: June 21, 2016
    Assignee: Omya International AG
    Inventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer
  • Publication number: 20160167977
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) 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, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 um and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.
    Type: Application
    Filed: August 8, 2014
    Publication date: June 16, 2016
    Inventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
  • Publication number: 20160023915
    Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick lime to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide gas to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.
    Type: Application
    Filed: October 2, 2015
    Publication date: January 28, 2016
    Applicant: Omya International AG
    Inventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
  • Patent number: 9150738
    Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6 000 ?S/cm.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: October 6, 2015
    Assignee: Omya International AG
    Inventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer
  • Publication number: 20150210559
    Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6,000 ?S/cm.
    Type: Application
    Filed: February 25, 2015
    Publication date: July 30, 2015
    Inventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer