Patents by Inventor Samuel Rentsch

Samuel Rentsch 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: 20140251564
    Abstract: The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Inventors: Matthas Buri, Samuel Rentsch, Patrick A.C. Gane, Daniel Gantenbein, Joachim Schölkopf
  • Patent number: 8821628
    Abstract: The present invention relates to a process for preparing an aqueous suspension of dispersed calcium carbonate, wherein the resulting coating of said suspension provides opaque properties or has a specific light scattering coefficient S. The invention further relates to compositions of such suspensions of dispersed calcium carbonate and to its use in the field of paper coatings and paper mass fillings as well as paints and plastic coatings.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 2, 2014
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Matthias Buri, Samuel Rentsch
  • Publication number: 20140165879
    Abstract: The present invention relates to a process for preparing self-binding pigment particles from an aqueous mineral pigment material suspension having a solid content of 45 to 80 wt.-%, based on the total weight of the suspension.
    Type: Application
    Filed: March 22, 2012
    Publication date: June 19, 2014
    Inventors: Patrick A.C. Gane, Matthias Buri, Samuel Rentsch, Julie Bridy (Meuwly)
  • Publication number: 20140165877
    Abstract: The present invention relates to a process for preparing self-binding pigment particles from an aqueous mineral pigment material suspension having a solid content of 45 to 80 wt.-%, based on the total weight of the suspension.
    Type: Application
    Filed: March 22, 2012
    Publication date: June 19, 2014
    Inventors: Patrick A.C. Gane, Matthias Buri, Samuel Rentsch, Julie Bridy (Meuwly)
  • Publication number: 20140147370
    Abstract: The present invention concerns a calcium carbonate containing material having increased bulk density at equal or improved flowability, and a method of producing such a material. The inventive process comprises the step of contacting a calcium carbonate containing mineral powder with a solution or emulsion or dispersion of a binder.
    Type: Application
    Filed: October 19, 2011
    Publication date: May 29, 2014
    Inventors: Patrick A.C. Gane, Matthias Buri, René Vinzenz Blum, Samuel Rentsch
  • Publication number: 20140148538
    Abstract: The invention relates to the preparation of an aqueous suspension of mineral matter by dispersion and/or grinding in the presence of at least one amine and one vinyl-carboxylic polymer, with the amine allowing to reduce the amount of the polymer and the use of the resulting suspension.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 29, 2014
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Patrick A.C. Gane, Matthias Buri, Samuel Rentsch
  • Patent number: 8662311
    Abstract: The invention refers to a process to separate silicates and alkaline earth metal carbonates implementing at least one hydrophobically modified polyalkyleneimine, wherein: i) the polyalkyleneimine is hydrophobically modified by replacement of all or part of the hydrogens of their primary and/or secondary amino groups by functional group R, where R comprises a linear or branched or cyclic alkyl and/or aryl group and contains 1 to 32 carbon atoms; ii) prior to modification, the polyalkyleneimine has at least 3 alkyleneimine repeat units and a molecular weight of between 140 and 100 000 g/mol; iii) modification of the polyalkyleneimine results in an increase in the atomic C amount, relative to the unmodified polyalkyleneimine, of between 1 and 80%.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 4, 2014
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Matthias Buri, Samuel Rentsch, Jörg Sötemann
  • Publication number: 20130217819
    Abstract: The present invention relates to the technical field of treated mineral filler products. The invention further relates to a process for preparing such treated mineral filler products, and to its preferred use in the field of plastic applications, and in particular polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications.
    Type: Application
    Filed: May 23, 2011
    Publication date: August 22, 2013
    Inventors: Matthias Buri, Patrick A.C. Gane, Samuel Rentsch, René Brukhalter
  • Publication number: 20130207054
    Abstract: Use of 2-aminoethanol as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
    Type: Application
    Filed: May 31, 2011
    Publication date: August 15, 2013
    Inventors: Matthias Buri, Samuel Rentsch, Patrick A.C. Gane
  • Publication number: 20130197142
    Abstract: The present invention relates to a process for preparing a surface treated mineral filler product, and to its preferred use in the field of plastic applications, and in particular polypropylene (PP)-or polyethylene (PE)-based breathable or extrusion coating film applications.
    Type: Application
    Filed: May 24, 2011
    Publication date: August 1, 2013
    Inventors: Matthias Buri, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter
  • Publication number: 20130192784
    Abstract: The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.
    Type: Application
    Filed: July 12, 2011
    Publication date: August 1, 2013
    Inventors: Matthias Buri, Samuel Rentsch, Patrick A.C. Gane, Daniel Gantenbein, Joachim Schölkopf
  • Publication number: 20130192490
    Abstract: Use of at least one polyethylenimineas an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
    Type: Application
    Filed: January 24, 2011
    Publication date: August 1, 2013
    Inventors: Matthias Buri, Samuel Rentsch, Patrick A.C. Gane
  • Publication number: 20130161239
    Abstract: The invention refers to a process to separate silicates and alkaline earth metal carbonates implementing at least one hydrophobically modified polyalkyleneimine, wherein: i) the polyalkyleneimine is hydrophobically modified by replacement of all or part of the hydrogens of their primary and/or secondary amino groups by functional group R, where R comprises a linear or branched or cyclic alkyl and/or aryl group and contains 1 to 32 carbon atoms; ii) prior to modification, the polyalkyleneimine has at least 3 alkyleneimine repeat units and a molecular weight of between 140 and 100 000 g/mol; iii) modification of the polyalkyleneimine results in an increase in the atomic C amount, relative to the unmodified polyalkyleneimine, of between 1 and 80%. The invention additionally refers to a silicate-containing product and an alkaline earth metal carbonate-containing product obtained by the process of the invention, and to their uses.
    Type: Application
    Filed: March 16, 2011
    Publication date: June 27, 2013
    Inventors: Patrick A.C. Gane, Matthias Buri, Samuel Rentsch, Jörg Sötemann
  • Publication number: 20130134365
    Abstract: Use of 2-((1-methylpropyl)amino)ethanol as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
    Type: Application
    Filed: January 20, 2011
    Publication date: May 30, 2013
    Applicant: Omya Development AG
    Inventors: Matthias Buri, Samuel Rentsch, Patrick A.C. Gane
  • Publication number: 20120256140
    Abstract: Use of 2-amino-2-methyl-1-propanol (AMP) as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material and having a pH of between 8.5 and 11, to increase the suspension pH by at least 0.3 pH units, the AMP being added to said suspension in an amount of from 500 to 15000 mg per litre of the aqueous phase of the suspension, wherein the suspension conductivity change is maintained to within 100 ?S/cm/pH unit.
    Type: Application
    Filed: August 5, 2010
    Publication date: October 11, 2012
    Inventors: Matthias Buri, Samuel Rentsch, Patrick Arthur Charles Gane
  • Publication number: 20120097069
    Abstract: The present invention relates to a process for preparing an aqueous suspension of dispersed calcium carbonate, wherein the resulting coating of said suspension provides opaque properties or has a specific light scattering coefficient S. The invention further relates to compositions of such suspensions of dispersed calcium carbonate and to its use in the field of paper coatings and paper mass fillings as well as paints and plastic coatings.
    Type: Application
    Filed: June 29, 2010
    Publication date: April 26, 2012
    Inventors: Patrick A. C. Gane, Matthias Buri, Samuel Rentsch
  • Publication number: 20110269887
    Abstract: The invention relates to a process for manufacturing aqueous mineral material suspensions or dried mineral materials using at least one lithium ion neutralised water-soluble organic polymer, the ground mineral materials obtained by this process, the use of the mineral materials in paper, paints and plastics, as well as the use of the lithium ion neutralised water-soluble organic polymer in the manufacturing process as a dispersing and/or grinding enhancer.
    Type: Application
    Filed: December 16, 2009
    Publication date: November 3, 2011
    Inventors: Patrick A.C. Gane, Matthias Buri, Beat Karth, Samuel Rentsch