Patents by Inventor Catherine Jean Ridgway

Catherine Jean Ridgway 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: 11427695
    Abstract: The present invention relates to the use of a surface-reacted calcium carbonate as an anti-blocking agent in polymer(s) containing compositions, wherein the surface-reacted calcium carbonate is a reaction product of natural ground or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors in an aqueous medium, wherein the carbon dioxide is formed in situ by the H3O+ ion donors treatment and/or is supplied from an external source, an anti-blocking agent comprising surface-reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a method for controlling the blocking of polymer(s) containing compositions, a polymer(s) containing composition comprising surface reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a coating composition comprising such polymer(s) containing composition, as well as a substrate coated with such coating composition.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: August 30, 2022
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
  • 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: 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
  • Publication number: 20200255675
    Abstract: The present invention relates to the use of a surface-reacted calcium carbonate as an anti-blocking agent in polymer(s) containing compositions, wherein the surface-reacted calcium carbonate is a reaction product of natural ground or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors in an aqueous medium, wherein the carbon dioxide is formed in situ by the H3O+ ion donors treatment and/or is supplied from an external source, an anti-blocking agent comprising surface-reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a method for controlling the blocking of polymer(s) containing compositions, a polymer(s) containing composition comprising surface reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a coating composition comprising such polymer(s) containing composition, as well as a substrate coated with such coating composition.
    Type: Application
    Filed: April 29, 2020
    Publication date: August 13, 2020
    Applicant: Omya International AG
    Inventors: Patrick A.C. GANE, Steffen OHR, Catherine Jean RIDGWAY, Philipp HUNZIKER
  • 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: 10676624
    Abstract: The present invention relates to the use of a surface-reacted calcium carbonate as an anti-blocking agent in polymer(s) containing compositions, wherein the surface-reacted calcium carbonate is a reaction product of natural ground or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors in an aqueous medium, wherein the carbon dioxide is formed in situ by the H3O+ ion donors treatment and/or is supplied from an external source, an anti-blocking agent comprising surface-reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a method for controlling the blocking of polymer(s) containing compositions, a polymer(s) containing composition comprising surface reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a coating composition comprising such polymer(s) containing composition, as well as a substrate coated with such coating composition.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 9, 2020
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
  • 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: 10544544
    Abstract: A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: January 28, 2020
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Patrick A. C. Gane, Samuel Rentsch, Matthias Welker, Catherine Jean Ridgway
  • 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
  • Publication number: 20180258586
    Abstract: A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water.
    Type: Application
    Filed: October 10, 2016
    Publication date: September 13, 2018
    Inventors: Patrick A.C. Gane, Samuel Rentsch, Matthias Welker, Catherine Jean Ridgway
  • Patent number: 10029276
    Abstract: The present invention concerns a print medium for inkjet printing and a method of producing such a print medium. In particular, the present invention is directed to a print medium comprising a base layer having a first side and a reverse side, an absorptive layer being in contact with the first side of the base layer, and a topcoat being in contact with the absorptive layer.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: July 24, 2018
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Vesa Kukkamo, Catherine Jean Ridgway
  • 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
  • Publication number: 20180155555
    Abstract: The present invention relates to the use of a surface-reacted calcium carbonate as an anti-blocking agent in polymer(s) containing compositions, wherein the surface-reacted calcium carbonate is a reaction product of natural ground or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors in an aqueous medium, wherein the carbon dioxide is formed in situ by the H3O+ ion donors treatment and/or is supplied from an external source, an anti-blocking agent comprising surface-reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a method for controlling the blocking of polymer(s) containing compositions, a polymer(s) containing composition comprising surface reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a coating composition comprising such polymer(s) containing composition, as well as a substrate coated with such coating composition.
    Type: Application
    Filed: May 27, 2016
    Publication date: June 7, 2018
    Inventors: Patrick A.C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
  • 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
  • Patent number: 9579291
    Abstract: The present invention relates to carriers for the controlled release of active agents, comprising a core, comprising surface reacted natural or synthetic calcium carbonate, and at least one active agent, wherein said at least one active agent is associated with said natural or synthetic surface-reacted calcium carbonate, and wherein said surface-reacted natural or synthetic calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and one or more acids, wherein the carbon dioxide is formed in situ by the acid treatment and/or is supplied from an external source, and a coating encapsulating the core. It furthermore relates to the preparation of loaded carriers, as well as their use in different applications.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 28, 2017
    Assignee: Omya International AG
    Inventors: Patrick Schwarzentruber, Nicola Di Maiuta, Joachim Schoelkopf, Catherine Jean Ridgway, Patrick A. C. Gane
  • Patent number: 9175442
    Abstract: The present invention relates to a process for manufacturing coated substrates by providing a substrate, providing at least one mineral material, providing a polysaccharide material comprising one or more polysaccharides, coating the substrate with the at least one mineral material, and coating the resulting pre-coat layer of mineral material with the gel comprising one or more polysaccharides, as well as the coated substrate obtained by this process and its use.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: November 3, 2015
    Assignee: Omya International
    Inventors: Patrick A. C. Gane, Catherine Jean Ridgway, Michel Schenker
  • Patent number: 8974877
    Abstract: The present invention concerns a print medium for inkjet printing and a method of producing such a print medium. In particular, the present invention is directed to a print medium comprising a base layer having a first side and a reverse side, an absorptive layer being in contact with the first side of the base layer, and a topcoat being in contact with the absorptive layer.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 10, 2015
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Vesa Kukkamo, Catherine Jean Ridgway
  • Publication number: 20140302337
    Abstract: The present invention relates to a process for manufacturing coated substrates by providing a substrate, providing at least one mineral material, providing a polysaccharide material comprising one or more polysaccharides, coating the substrate with the at least one mineral material, and coating the resulting pre-coat layer of mineral material with the gel comprising one or more polysaccharides, as well as the coated substrate obtained by this process and its use.
    Type: Application
    Filed: May 21, 2012
    Publication date: October 9, 2014
    Inventors: Patrick A.C. Gane, Catherine Jean Ridgway, Michel Schenker
  • Publication number: 20140248340
    Abstract: The present invention relates to carriers for the controlled release of active agents, comprising a core, comprising surface reacted natural or synthetic calcium carbonate, and at least one active agent, wherein said at least one active agent is associated with said natural or synthetic surface-reacted calcium carbonate, and wherein said surface-reacted natural or synthetic calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and one or more acids, wherein the carbon dioxide is formed in situ by the acid treatment and/or is supplied from an external source, and a coating encapsulating the core. It furthermore relates to the preparation of loaded carriers, as well as their use in different applications.
    Type: Application
    Filed: November 8, 2012
    Publication date: September 4, 2014
    Inventors: Patrick Schwarzentruber, Nicola Di Maiuta, Joachim Schoelkopf, Catherine Jean Ridgway, Patrick A.C. Gane