Patents by Inventor Daniel E. Gerard

Daniel E. Gerard 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: 20190270890
    Abstract: The present invention relates to a process for producing surface-reacted calcium carbonate, wherein a calcium carbonate-comprising material is treated with phosphoric acid, carbon dioxide, and specific dicarboxylic acids, in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate. Furthermore, the present invention relates to surface-reacted calcium carbonate obtained by said process and its use.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 5, 2019
    Inventors: Daniel E. Gerard, Patrick A.C. Gane, Joachim Schoelkopf
  • Publication number: 20190218107
    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, and a precipitation enhancer, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Inventors: Daniel E. Gerard, Patrick A.C. Gane
  • Patent number: 10351710
    Abstract: The present invention relates to a method for the production of granules comprising surface-reacted calcium carbonate by a) providing surface-reacted calcium carbonate, b) saturating the surface-reacted calcium carbonate with one or more liquids; c) providing one or more binder; d) combining the liquid saturated surface-reacted calcium carbonate with the one or more binder under agitation in an agitation device; e) removing the liquid from the mixture of step d); as well as to the granules comprising surface-reacted calcium carbonate obtained by this method.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 16, 2019
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Joachim Schoelkopf, Patrick A. C. Gane
  • Publication number: 20190194469
    Abstract: The present invention relates to a process for the preparation of a surface-reacted precipitated calcium carbonate (PCC) pigment having an insoluble, at least partially crystalline calcium salt on its surface. In the process of the present invention, a PCC containing pigment is contacted with H3O+ ions and a solubilized anion in an aqueous medium in the presence of excess solubilized calcium ions to form the surface-reacted PCC having an insoluble, at least partially crystalline calcium salt of the anion formed on its surface.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Inventors: Daniel E. Gerard, Patrick A.C. Gane, Joachim Schölkopf, Hans-Joachim Weitzel
  • Publication number: 20190161619
    Abstract: A process of producing a surface-reacted calcium carbonate is described. In embodiments, a calcium carbonate-comprising material is treated with at least one H3O+ ion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate. A surface-reacted calcium carbonate obtained by said process and its use are also described.
    Type: Application
    Filed: July 20, 2017
    Publication date: May 30, 2019
    Inventors: Daniel E. GERARD, Samuel RENTSCH, Matthias WELKER, Simon URWYLER, Joachim GLAUBITZ, Martina Elisabeth KNUPFER, Patrick A. C. GANE
  • Patent number: 10294115
    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, and a precipitation enhancer, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: May 21, 2019
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Patrick A. C. Gane
  • Patent number: 10280309
    Abstract: The present invention relates to a process for the preparation of a surface-reacted precipitated calcium carbonate (PCC) pigment having an insoluble, at least partially crystalline calcium salt on its surface. In the process of the present invention, a PCC containing pigment is contacted with H3O+ ions and a solubilized anion in an aqueous medium in the presence of excess solubilized calcium ions to form the surface-reacted PCC having an insoluble, at least partially crystalline calcium salt of the anion formed on its surface.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: May 7, 2019
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Patrick A. C. Gane, Joachim Schölkopf, Hans-Joachim Weitzel
  • Publication number: 20190047890
    Abstract: The present invention relates to a process for increasing the solids content of aqueous sludges and/or sediments, to the use of a surface-treated mineral material for increasing the solids content of sludges and/or sediments, and to a composite material comprising a surface-treated mineral material and impurities obtainable by said process.
    Type: Application
    Filed: April 24, 2017
    Publication date: February 14, 2019
    Inventors: Martine Poffet, Pascal Jäggi, Daniel E. Gerard, Joachim Schoelkopf
  • Publication number: 20180338892
    Abstract: The present invention relates to surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid. Said calcium carbonate and oral compositions containing the same can be used in remineralisation and/or whitening of teeth.
    Type: Application
    Filed: November 11, 2016
    Publication date: November 29, 2018
    Inventors: Tanja Budde, Daniel E. Gerard, Patrick A.C. Gane
  • Publication number: 20180327604
    Abstract: The present invention relates to a method for the production of granules comprising surface-reacted calcium carbonate, as well as to the granules obtained thereby and their use.
    Type: Application
    Filed: December 1, 2016
    Publication date: November 15, 2018
    Inventors: Carolina Diaz Quijano, Daniel E. Gerard, Joachim Schoelkopf, Patrick A.C. Gane
  • Publication number: 20180258288
    Abstract: The present invention relates to a process for producing a surface-treated calcium carbonate with improved stability in environments with a pH of 4.5 to 7, wherein calcium carbonate, at least one acid having a pKa value from 0 to 8, when measured at 20° C., and at least one conjugate base are brought into contact to form surface-treated calcium carbonate.
    Type: Application
    Filed: January 13, 2016
    Publication date: September 13, 2018
    Inventors: Daniel E. Gerard, Tanja Budde, Patrick A.C. Gane
  • Patent number: 9993428
    Abstract: An instantly floating gastroretentive drug formulation comprising at least one functionalized natural and/or synthetic calcium carbonate-comprising mineral and at least one pharmaceutically active ingredient and at least one formulating aid wherein said functionalized 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.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: June 12, 2018
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Joachim Schoelkopf, Patrick A. C. Gane, Veronika Anna Eberle, Rainer Alles, Maxim Puchkov, Jörg Huwyler
  • Patent number: 9987230
    Abstract: An instantly floating gastroretentive drug formulation comprising at least one functionalized natural and/or synthetic calcium carbonate-comprising mineral and at least one pharmaceutically active ingredient and at least one formulating aid wherein said functionalized 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.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 5, 2018
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Joachim Schoelkopf, Patrick A.C. Gane, Veronika Anna Eberle, Rainer Alles, Maxim Puchkov, Jörg Huwyler
  • Publication number: 20180093899
    Abstract: The present invention relates to at least one surface-reacted calcium carbonate-comprising mineral material and/or a surface-reacted precipitated calcium carbonate that is/are coated with at least one anionic polymer to obtain a surface-coated calcium carbonate-comprising material as well as to a process for the preparation of the surface-coated calcium carbonate-comprising material. Furthermore, the present invention relates to a process for the purification of water and/or dewatering of sludges and/or suspended sediments and to the use of a surface-coated calcium carbonate-comprising material for water purification and/or dewatering of sludges and/or suspended sediments.
    Type: Application
    Filed: March 3, 2016
    Publication date: April 5, 2018
    Inventors: Martine Poffet, Pascal Jäggi, Daniel E. Gerard, Peter Hess
  • Publication number: 20180078506
    Abstract: The present invention provides for method of improving flowability and loose bulk density of functionalized natural- and/or synthetic calcium carbonate comprising material, to the use of such improved material in ready to use granules and thereof produced dispersible dosage forms.
    Type: Application
    Filed: March 15, 2016
    Publication date: March 22, 2018
    Inventors: Leonie Wagner-Hattler, Maxim Puchkov, Jörg Huwyler, Tanja Stirnimann, Carolina Diaz Quijano, Joachim Schoelkopf, Patrick A.C. Gane, Daniel E. Gerard
  • Publication number: 20170305755
    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, and a precipitation enhancer, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Inventors: Daniel E. Gerard, Patrick A.C. Gane
  • Patent number: 9745212
    Abstract: The present invention relates to a process for the purification of water, wherein a surface-reacted natural calcium carbonate is brought into contact with the water to be purified, the surface-reacted natural calcium carbonate being the reaction product of a natural calcium carbonate with an acid and carbon dioxide, which is formed in situ by the acid treatment and/or supplied externally.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: August 29, 2017
    Assignee: Omya International AG
    Inventors: Patrick A. C. Gane, Joachim Schölkopf, Daniel Gantenbein, Daniel E. Gerard
  • Patent number: 9725600
    Abstract: The present invention relates to an aqueous calcium carbonate containing composition, to methods for producing such aqueous calcium carbonate containing compositions and to the use of the aqueous calcium carbonate containing composition in paper, paper coating, plastics and/or paint applications and as filler in paper.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: August 8, 2017
    Assignee: Omya International AG
    Inventors: Samuel Rentsch, Daniel E. Gerard, Matthias Buri, Patrick A. C. Gane, Vesa Kukkamo
  • Publication number: 20170157171
    Abstract: The present invention relates to surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid. Said calcium carbonate and oral compositions containing the same can be used as a medicament, and especially in treating dentine hypersensitivity.
    Type: Application
    Filed: March 20, 2015
    Publication date: June 8, 2017
    Inventors: Daniel E. Gerard, Tanja Budde, Joachim Schoelkopf, Patrick A.C. Gane
  • Publication number: 20170105911
    Abstract: The present invention relates to surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid. Said calcium carbonate and oral compositions containing the same can be used in remineralisation and/or whitening of teeth.
    Type: Application
    Filed: March 5, 2015
    Publication date: April 20, 2017
    Inventors: Tanja Budde, Daniel E. Gerard, Patrick A.C. Gane