Patents by Inventor René Burkhalter

René Burkhalter 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: 11261100
    Abstract: The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 1, 2022
    Assignee: Omya International AG
    Inventors: Matthias Buri, Catherine Jean Ridgway, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
  • Patent number: 10876005
    Abstract: The invention concerns a process for manufacturing a dry mineral pigment containing a product formed in situ by the multiple reaction between a calcium carbonate and the product or products of reaction of the said carbonate with one or more moderately strong to strong H3O+ ion donators and the product or products of reaction of the said carbonate with gaseous CO2 formed in situ and/or originating from an external supply and one or more compounds of formula R—X together with the mineral pigment obtained by the process, and its applications in the field of paint and/or plastics.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: December 29, 2020
    Assignee: Omya International AG
    Inventors: Matthias Buri, Rene Burkhalter, Peter Haldemann
  • Publication number: 20200039834
    Abstract: The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.
    Type: Application
    Filed: October 10, 2019
    Publication date: February 6, 2020
    Applicant: Omya International AG
    Inventors: Matthias BURI, Catherine Jean RIDGWAY, Patrick A.C. GANE, Samuel RENTSCH, René BURKHALTER, Armelle SENTI-WENK, Martin BRUNNER, Gil MORIERAS, Tazio Fornera
  • Patent number: 10486979
    Abstract: The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 26, 2019
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Matthias Buri, Catherine Jean Ridgway, Patrick A. C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
  • Patent number: 10435521
    Abstract: An inventive process for the production of a polymer composition is provided, said process comprising the incorporation of a filler into a polymer material, wherein said polymer material during incorporation of the filler is in at least partially molten state and wherein said filler is incorporated as a slurry.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: October 8, 2019
    Assignees: OMYA INTERNATIONAL AG, FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER
    Inventors: Michael Tinkl, Martin Brunner, René Burkhalter, Tazio Fornera, Giuseppe Schirosi, Rudolf Pfaendner, Jan Barth, Bernd Dillmann, Harald Dörr
  • Publication number: 20190241745
    Abstract: The invention concerns a process for manufacturing a dry mineral pigment containing a product formed in situ by the multiple reaction between a calcium carbonate and the product or products of reaction of the said carbonate with one or more moderately strong to strong H3O+ ion donators and the product or products of reaction of the said carbonate with gaseous CO2 formed in situ and/or originating from an external supply and one or more compounds of formula R—X together with the mineral pigment obtained by the process, and its applications in the field of paint and/or plastics.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Inventors: Matthias Buri, Rene Burkhalter, Peter Haldemann
  • Patent number: 10308813
    Abstract: The invention concerns a process for manufacturing a dry mineral pigment containing a product formed in situ by the multiple reaction between a calcium carbonate and the product or products of reaction of the said carbonate with one or more moderately strong to strong H3O+ ion donators and the product or products of reaction of the said carbonate with gaseous CO2 formed in situ and/or originating from an external supply and one or more compounds of formula R—X together with the mineral pigment obtained by the process, and its applications in the field of paint and/or plastics.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: June 4, 2019
    Assignee: Omya International AG
    Inventors: Matthias Buri, Rene Burkhalter, Peter Haldemann
  • Patent number: 10287407
    Abstract: The present invention relates to a breathable film comprising at least one thermoplastic polymer and a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof, a process for producing the same, and the use thereof. Furthermore, the present invention is directed to the use of a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof in breathable films.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 14, 2019
    Assignee: Omya International AG
    Inventors: Martin Brunner, René Burkhalter, Tazio Fornera, Samuel Rentsch, Michael Tinkl, Francesco Pullega, Monroe Moore
  • Patent number: 10131791
    Abstract: The present invention relates to the domain of mineral filler treatment processes. The process for the preparation of a treated mineral filler product comprises the following steps: (a) treating at least one dry mineral filler with at least one Group II or Group III salt of a C8 to C24 aliphatic monocarboxylic acid to produce an intermediate mineral filler product; followed by (b) treating the intermediate mineral filler product of step (a) with at least one C8 to C24 aliphatic monocarboxylic acid to produce a treated mineral filler product. Applications in particular to prepare treated mineral filler products (such as Ca carbonate) to be used in plastic applications such as in polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: November 20, 2018
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Matthias Buri, René Burkhalter
  • Patent number: 10011732
    Abstract: The present invention consists of a process of preparation of at least one mineral matter and/or of at least one pigment, including a calcium carbonate made at once partially organophilic and partially hydrophilic, in which the carbonate is blended and/or ground and/or concentrated in an aqueous medium, in the presence of at least one salt of ethylene acrylic acid, one dispersing agent and/or one grinding aid agent, which is introduced before and/or during this treatment stage. Another object of the invention lies in the aqueous dispersions and suspensions of calcium carbonate thus obtained. They may be dried and the dry pigments obtained also constitute an object of the invention. Use of these aqueous dispersions and these dry pigments in the field of plastic, paints and paper constitutes another object of the invention.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: July 3, 2018
    Assignee: Omya International AG
    Inventors: Matthias Buri, Patrick A. C. Gane, Philipp Hunziker, René Burkhalter, Beat Karth
  • Patent number: 10011731
    Abstract: The present invention consists of a process of preparation of at least one mineral matter and/or of at least one pigment, including a calcium carbonate made at once partially organophilic and partially hydrophilic, in which the carbonate is blended and/or ground and/or concentrated in an aqueous medium, in the presence of at least one salt of ethylene acrylic acid, one dispersing agent and/or one grinding aid agent, which is introduced before and/or during this treatment stage. Another object of the invention lies in the aqueous dispersions and suspensions of calcium carbonate thus obtained. They may be dried and the dry pigments obtained also constitute an object of the invention. Use of these aqueous dispersions and these dry pigments in the field of plastic, paints and paper constitutes another object of the invention.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: July 3, 2018
    Assignee: Omya International AG
    Inventors: Matthias Buri, Patrick A. C. Gane, Philipp Hunziker, René Burkhalter, Beat Karth
  • Patent number: 9944815
    Abstract: The present invention consists of a process of preparation of at least one mineral matter and/or of at least one pigment, including a calcium carbonate made at once partially organophilic and partially hydrophilic, in which the carbonate is blended and/or ground and/or concentrated in an aqueous medium, in the presence of at least one salt of ethylene acrylic acid, one dispersing agent and/or one grinding aid agent, which is introduced before and/or during this treatment stage. Another object of the invention lies in the aqueous dispersions and suspensions of calcium carbonate thus obtained. They may be dried and the dry pigments obtained also constitute an object of the invention. Use of these aqueous dispersions and these dry pigments in the field of plastic, paints and paper constitutes another object of the invention.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: April 17, 2018
    Assignee: Omya International AG
    Inventors: Matthias Buri, Patrick A. C. Gane, Philipp Hunziker, René Burkhalter, Beat Karth
  • Patent number: 9896573
    Abstract: The present invention relates to a composition, comprising (i) a polypropylene having a melt flow index MFI(230° C., 2.16 kg) of less than 2.0 g/10 min, a flexural modulus of from 1200 to 2400 MPa, a density of from 0.895 to 0.910 g/cm3, (ii) a high-density polyethylene, and (iii) an inorganic filler.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 20, 2018
    Assignee: Omya International AG
    Inventors: Emil Hersche, René Burkhalter
  • Publication number: 20170218148
    Abstract: The present invention relates to a breathable film comprising at least one thermoplastic polymer and a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof, a process for producing the same, and the use thereof. Furthermore, the present invention is directed to the use of a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof in breathable films.
    Type: Application
    Filed: August 12, 2015
    Publication date: August 3, 2017
    Inventors: Martin Brunner, René Burkhalter, Tazio Fornera, Samuel Rentsch, Michael Tinkl, Francesco Pullega
  • Publication number: 20170129782
    Abstract: The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.
    Type: Application
    Filed: June 25, 2015
    Publication date: May 11, 2017
    Inventors: Matthias Buri, Catherine Jean Ridgway, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
  • Publication number: 20170051153
    Abstract: The present invention relates to the domain of mineral filler treatment processes. The process for the preparation of a treated mineral filler product comprises the following steps: (a) treating at least one dry mineral filler with at least one Group II or Group III salt of a C8 to C24 aliphatic monocarboxylic acid to produce an intermediate mineral filler product; followed by (b) treating the intermediate mineral filler product of step (a) with at least one C8 to C24 aliphatic monocarboxylic acid to produce a treated mineral filler product. Applications in particular to prepare treated mineral filler products (such as Ca carbonate) to be used in plastic applications such as in polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications.
    Type: Application
    Filed: September 29, 2016
    Publication date: February 23, 2017
    Applicant: Omya International AG
    Inventors: Patrick A.C. Gane, Matthias Buri, René Burkhalter
  • Publication number: 20170015859
    Abstract: The present invention consists of a process of preparation of at least one mineral matter and/or of at least one pigment, including a calcium carbonate made at once partially organophilic and partially hydrophilic, in which the carbonate is blended and/or ground and/or concentrated in an aqueous medium, in the presence of at least one salt of ethylene acrylic acid, one dispersing agent and/or one grinding aid agent, which is introduced before and/or during this treatment stage. Another object of the invention lies in the aqueous dispersions and suspensions of calcium carbonate thus obtained. They may be dried and the dry pigments obtained also constitute an object of the invention. Use of these aqueous dispersions and these dry pigments in the field of plastic, paints and paper constitutes another object of the invention.
    Type: Application
    Filed: September 16, 2016
    Publication date: January 19, 2017
    Applicant: Omya International AG
    Inventors: Matthias Buri, Patrick A.C. Gane, Philipp Hunziker, René Burkhalter, Beat Karth
  • Publication number: 20160289397
    Abstract: An inventive process for the production of a polymer composition is provided, said process comprising the incorporation of a filler into a polymer material, wherein said polymer material during incorporation of the filler is in at least partially molten state and wherein said filler is incorporated as a slurry.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 6, 2016
    Inventors: Michael Tinkl, Martin Brunner, René Burkhalter, Tazio Fornera, Giuseppe Schirosi, Rudolf Pfaendner, Jan Barth, Bernd Dillmann, Harald Dörr
  • Publication number: 20160096961
    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: December 11, 2015
    Publication date: April 7, 2016
    Inventors: Matthias Buri, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter
  • Patent number: 9238727
    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: Grant
    Filed: May 23, 2011
    Date of Patent: January 19, 2016
    Assignee: Omya International AG
    Inventors: Matthias Buri, Patrick A. C. Gane, Samuel Rentsch, René Burkhalter