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).
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Patent number: 11427695Abstract: 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: GrantFiled: April 29, 2020Date of Patent: August 30, 2022Assignee: Omya International AGInventors: Patrick A. C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
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Patent number: 11261100Abstract: 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: GrantFiled: October 10, 2019Date of Patent: March 1, 2022Assignee: Omya International AGInventors: Matthias Buri, Catherine Jean Ridgway, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
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Patent number: 11111388Abstract: 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: GrantFiled: April 30, 2020Date of Patent: September 7, 2021Assignee: OMYA INTERNATIONAL AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
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Publication number: 20200270462Abstract: 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: ApplicationFiled: April 30, 2020Publication date: August 27, 2020Applicant: Omya International AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
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Publication number: 20200255675Abstract: 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: ApplicationFiled: April 29, 2020Publication date: August 13, 2020Applicant: Omya International AGInventors: Patrick A.C. GANE, Steffen OHR, Catherine Jean RIDGWAY, Philipp HUNZIKER
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Patent number: 10676620Abstract: 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: GrantFiled: July 29, 2016Date of Patent: June 9, 2020Assignee: OMYA INTERNATIONAL AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
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Patent number: 10676624Abstract: 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: GrantFiled: May 27, 2016Date of Patent: June 9, 2020Assignee: Omya International AGInventors: Patrick A. C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
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Publication number: 20200039834Abstract: 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: ApplicationFiled: October 10, 2019Publication date: February 6, 2020Applicant: Omya International AGInventors: Matthias BURI, Catherine Jean RIDGWAY, Patrick A.C. GANE, Samuel RENTSCH, René BURKHALTER, Armelle SENTI-WENK, Martin BRUNNER, Gil MORIERAS, Tazio Fornera
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Patent number: 10544544Abstract: 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: GrantFiled: October 10, 2016Date of Patent: January 28, 2020Assignee: OMYA INTERNATIONAL AGInventors: Patrick A. C. Gane, Samuel Rentsch, Matthias Welker, Catherine Jean Ridgway
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Patent number: 10486979Abstract: 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: GrantFiled: June 25, 2015Date of Patent: November 26, 2019Assignee: OMYA INTERNATIONAL AGInventors: Matthias Buri, Catherine Jean Ridgway, Patrick A. C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
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Publication number: 20180258586Abstract: 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: ApplicationFiled: October 10, 2016Publication date: September 13, 2018Inventors: Patrick A.C. Gane, Samuel Rentsch, Matthias Welker, Catherine Jean Ridgway
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Patent number: 10029276Abstract: 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: GrantFiled: February 18, 2014Date of Patent: July 24, 2018Assignee: Omya International AGInventors: Patrick A. C. Gane, Vesa Kukkamo, Catherine Jean Ridgway
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Publication number: 20180201789Abstract: 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: ApplicationFiled: July 29, 2016Publication date: July 19, 2018Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
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Publication number: 20180155555Abstract: 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: ApplicationFiled: May 27, 2016Publication date: June 7, 2018Inventors: Patrick A.C. Gane, Steffen Ohr, Catherine Jean Ridgway, Philipp Hunziker
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Publication number: 20170129782Abstract: 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: ApplicationFiled: June 25, 2015Publication date: May 11, 2017Inventors: Matthias Buri, Catherine Jean Ridgway, Patrick A.C. Gane, Samuel Rentsch, René Burkhalter, Armelle Senti-Wenk, Martin Brunner, Gil Morieras, Tazio Fornera
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Patent number: 9579291Abstract: 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: GrantFiled: November 8, 2012Date of Patent: February 28, 2017Assignee: Omya International AGInventors: Patrick Schwarzentruber, Nicola Di Maiuta, Joachim Schoelkopf, Catherine Jean Ridgway, Patrick A. C. Gane
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Patent number: 9175442Abstract: 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: GrantFiled: May 21, 2012Date of Patent: November 3, 2015Assignee: Omya InternationalInventors: Patrick A. C. Gane, Catherine Jean Ridgway, Michel Schenker
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Patent number: 8974877Abstract: 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: GrantFiled: June 30, 2011Date of Patent: March 10, 2015Assignee: Omya International AGInventors: Patrick A. C. Gane, Vesa Kukkamo, Catherine Jean Ridgway
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Publication number: 20140302337Abstract: 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: ApplicationFiled: May 21, 2012Publication date: October 9, 2014Inventors: Patrick A.C. Gane, Catherine Jean Ridgway, Michel Schenker
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Publication number: 20140248340Abstract: 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: ApplicationFiled: November 8, 2012Publication date: September 4, 2014Inventors: Patrick Schwarzentruber, Nicola Di Maiuta, Joachim Schoelkopf, Catherine Jean Ridgway, Patrick A.C. Gane