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).

  • Patent number: 11718759
    Abstract: A surface-reacted calcium carbonate is described. In embodiments, the surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material 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.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: August 8, 2023
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Samuel Rentsch, Matthias Welker, Simon Urwyler, Joachim Glaubitz, Martina Elisabeth Knupfer, Patrick A. C. Gane
  • Publication number: 20220169861
    Abstract: The present invention relates to a process for producing a surface-reacted calcium carbonate, wherein a calcium carbonate-comprising material is treated with at least one inorganic acid and carbon dioxide in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate, wherein the at least one water-soluble, inorganic magnesium salt is added before, during and/or after the treatment step. Furthermore, the present invention relates to a surface-reacted calcium carbonate obtained from said process and its use.
    Type: Application
    Filed: April 7, 2020
    Publication date: June 2, 2022
    Inventor: Daniel E. GERARD
  • Publication number: 20220089879
    Abstract: The present invention relates to a process for producing an aqueous suspension of surface-reacted calcium salt particles by mixing a calcium salt excluding monocalcium phosphate and dicalcium phosphate, a calcium phosphate selected from monocalcium phosphate and/or dicalcium phosphate, with water, and grinding the obtained aqueous suspension at a pH value of at least 4.2 to form an aqueous suspension of surface-reacted calcium salt particles.
    Type: Application
    Filed: January 31, 2020
    Publication date: March 24, 2022
    Inventors: Daniel E. GERARD, Lassi KARVONEN
  • Publication number: 20220025190
    Abstract: A method of providing micronutrient delivery and/or plant protection is described, the method comprising administering a surface-reacted calcium carbonate as a metal cation releaser to deliver the micronutrient and/or provide plant protection. The surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material 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.
    Type: Application
    Filed: October 5, 2021
    Publication date: January 27, 2022
    Inventors: Daniel E. GERARD, Samuel RENTSCH, Matthias WELKER, Simon URWYLER, Joachim GLAUBITZ, Martina Elisabeth KNUPFER, Patrick A. C. GANE
  • Publication number: 20220025189
    Abstract: A method of preserving, controlling an odor, and/or enhancing and/or mediating antimicrobial activity of a substrate is described, the method comprising administering a surface-reacted calcium carbonate. The surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material 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.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Inventors: Daniel E. GERARD, Samuel RENTSCH, Matthias WELKER, Simon URWYLER, Joachim GLAUBITZ, Martina Elisabeth KNUPFER, Patrick A. C. GANE
  • Publication number: 20220017753
    Abstract: A surface-reacted calcium carbonate is described. In embodiments, the surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material 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.
    Type: Application
    Filed: October 1, 2021
    Publication date: January 20, 2022
    Inventors: Daniel E. GERARD, Samuel RENTSCH, Matthias WELKER, Simon URWYLER, Joachim GLAUBITZ, Martina Elisabeth KNUPFER, Patrick A. C. GANE
  • Patent number: 11168219
    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: Grant
    Filed: July 20, 2017
    Date of Patent: November 9, 2021
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Daniel E. Gerard, Samuel Rentsch, Matthias Welker, Simon Urwyler, Joachim Glaubitz, Martina Elisabeth Knupfer, Patrick A. C. Gane
  • Patent number: 11041074
    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: Grant
    Filed: December 1, 2016
    Date of Patent: June 22, 2021
    Assignee: Omya International AG
    Inventors: Carolina Diaz Quijano, Daniel E. Gerard, Joachim Schoelkopf, Patrick A. C. Gane
  • Patent number: 11021374
    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: March 26, 2019
    Date of Patent: June 1, 2021
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Patrick A. C. Gane
  • Patent number: 10876004
    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: Grant
    Filed: July 21, 2017
    Date of Patent: December 29, 2020
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Patrick A. C. Gane, Joachim Schoelkopf
  • Patent number: 10843932
    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: Grant
    Filed: March 3, 2016
    Date of Patent: November 24, 2020
    Assignee: Omya International AG
    Inventors: Martine Poffet, Pascal Jäggi, Daniel E. Gerard, Peter Hess
  • Patent number: 10780031
    Abstract: The present invention relates to an abrasive cleaning composition comprising at least 6 wt.-%, based on the total weight of the composition, of a surface-reacted calcium carbonate as an abrasive material, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: September 22, 2020
    Assignee: Omya International AG
    Inventors: Tanja Budde, Michael Skovby, Daniel E. Gerard
  • Patent number: 10617648
    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: Grant
    Filed: March 15, 2016
    Date of Patent: April 14, 2020
    Assignee: Omya International AG
    Inventors: Leonie Wagner-Hattler, Maxim Puchkov, Jörg Huwyler, Tanja Stirnimann, Carolina Diaz Quijano, Joachim Schoelkopf, Patrick A. C. Gane, Daniel E. Gerard
  • Publication number: 20200061105
    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 5 and oral compositions containing the same can be used as a medicament, and especially in treating dentine hypersensitivity.
    Type: Application
    Filed: August 26, 2019
    Publication date: February 27, 2020
    Inventors: Daniel E. Gerard, Tanja Budde, Joachim Schoelkopf, Patrick A.C. Gane
  • Patent number: 10463693
    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: Grant
    Filed: March 20, 2015
    Date of Patent: November 5, 2019
    Assignee: Omya International AG
    Inventors: Daniel E. Gerard, Tanja Budde, Joachim Schoelkopf, Patrick A. C. Gane
  • 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