Patents by Inventor Ann Gray

Ann Gray 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).

  • Use of roll compacted pyrogenically produced silicon dioxide in pharmaceutical compositions
    Patent number: 8377994
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions is described.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: February 19, 2013
    Assignee: Evonik Degussa GmeH
    Inventors: Ann Gray, Margarete Drechsler, Ralph Hofmann
  • Dry liquids, and processes for their preparation
    Patent number: 8333914
    Abstract: Dry liquids having a particle size distribution (cumulative undersize) D10% ?80 to 140 ?m D50% 140 to 200 ?m D90% 190 to 340 ?m are prepared by passing the liquids and a hydrophobic, pyrogenically prepared silica through a clearly defined, spatially limited shear zone in which the liquids are broken up into small droplets and are surrounded by the hydrophobic, pyrogenically prepared silica.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: December 18, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Holger Pitsch, Josef Piroth, Thomas Riedemann, Heike Riedemann, Ann Gray, Frank Dieter Huenig
  • FUMED SILICA FOR USE AS AUXILIARY IN PHARMACEUTICAL AND COSMETIC COMPOSITIONS
    Publication number: 20090311159
    Abstract: Fumed silica for use as auxiliary substance in pharmaceutical and cosmetic compositions, which has—a BET surface area of 90 to 400 m2/g—a content of As, Cd, Cr, Pb, Sb and Se of less than 1 ppm for each elements and less than 5 ppm of Hg, all elements determined by Inductively Coupled Plasma—Atomic Emission Spectroscopy (ICP-AES) or Atomic Absorption Spectroscopy (AAS).
    Type: Application
    Filed: July 4, 2007
    Publication date: December 17, 2009
    Applicant: EVONIK DEGUSSA GmbH
    Inventor: Ann Gray
  • USE OF ROLL COMPACTED PYROGENICALLY PRODUCED SILICON DIOXIDE IN PHARMACEUTICAL COMPOSITIONS
    Publication number: 20090312439
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions, the pharmaceutical compositions per se, as well as an adsorbate consisting of the Schülpen and at least one further substance selected from pharmaceutical active constituents and excipients, and the produce of such adsorbates, are described.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 17, 2009
    Inventors: Ralph Hofmann, Ann Gray, Margarete Drechsler
  • USE OF ROLL COMPACTED PYROGENICALLY PRODUCED SILICON DIOXIDE IN PHARMACEUTICAL COMPOSITIONS
    Publication number: 20090306224
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions is described.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 10, 2009
    Applicant: DEGUSSA GMBH
    Inventors: Ann Gray, Margarete Drechsler, Ralph Hofmann
  • DRY LIQUIDS, AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20090202835
    Abstract: Dry liquids having a particle size distribution (cumulative undersize) D10% ?80 to 140 ?m D50% 140 to 200 ?m D90% 190 to 340 ?m are prepared by passing the liquids and a hydrophobic, pyrogenically prepared silica through a clearly defined, spatially limited shear zone in which the liquids are broken up into small droplets and are surrounded by the hydrophobic, pyrogenically prepared silica.
    Type: Application
    Filed: November 3, 2006
    Publication date: August 13, 2009
    Inventors: Holger Pitsch, Josef Piroth, Thomas Riedemann, Heike Riedemann, Ann Gray, Frank Dieter Huenig
  • STORAGE OF PULVERULENT SUBSTANCES HAVING A HIGH WATER CONTENT
    Publication number: 20090047225
    Abstract: Process to delay the release of water from a pulverulent preparation comprising cosmetic products, cleaning agents and detergents, wherein the pulverulent preparation contains at least 50 wt. % of water and a hydrophobed silicon dioxide powder, wherein the pulverulent preparation is in contact with a hydrophobic material during storage.
    Type: Application
    Filed: December 23, 2005
    Publication date: February 19, 2009
    Applicant: DEGUSSA GmbH
    Inventors: Steffen Hasenzahl, Margarete Drechsler, Stephanie Reader, Ann Gray
  • Pulverulent Cosmetic Formulation Having A High Water Content
    Publication number: 20080095724
    Abstract: Pulverulent cosmetic formulation comprising at least one hydrophobized silicon dioxide powder, at least one cosmetically relevant constituent and at least 50 wt. % of water, based on the total amount of the formulation, characterized in that the hydrophobized silicon dioxide powder has a tamped density of at least 70 g/l, determined in accordance with DIN EN ISO 787-11.
    Type: Application
    Filed: November 21, 2005
    Publication date: April 24, 2008
    Applicant: DEGUSSA GmbH
    Inventors: Steffen Hasenzahl, Stephanie Reader, Ann Gray
  • Surface-modified silicon dioxide-titanium dioxide mixed oxides
    Patent number: 7255735
    Abstract: Pyrogenically prepared surface-modified silicon dioxide-titanium dioxide mixed oxides are prepared by spraying pyrogenically prepared silicon dioxide-titanium dioxide mixed oxides with a surface-modifying agent. The surface-modified pyrogenically prepared silicon dioxide-titanium dioxide mixed oxides can be used in sun protection formulation.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: August 14, 2007
    Assignee: Degussa AG
    Inventors: Jürgen Meyer, Kai Schumacher, Steffen Hasenzahl, Heike Riedemann, Ann Gray
  • Surface-modified pyrogenically prepared titanium dioxides
    Publication number: 20060159635
    Abstract: Surface-modified, pyrogenically prepared titanium dioxides coated with silicon dioxide are prepared by spraying the pyrogenically prepared titanium dioxides coated with silicon dioxide with a surface-modifying agent and then tempering them. They can be used in sun protection formulations.
    Type: Application
    Filed: December 22, 2005
    Publication date: July 20, 2006
    Applicant: Degussa AG
    Inventors: Jurgen Meyer, Kai Schumacher, Steffen Hasenzahl, Heike Riedemann, Ann Gray
  • Surface-modified, structurally modified titanium dioxides
    Publication number: 20060159637
    Abstract: Pyrogenically prepared, surface-modified, structurally modified titanium dioxides and pyrogenically prepared, surface-modified, structurally modified titanium dioxide mixed oxides are prepared by structurally modifying and then surface modifying the titanium dioxide or titanium dioxide mixed oxide. The titanium dioxides can be used to produce sunscreen formulations.
    Type: Application
    Filed: December 22, 2005
    Publication date: July 20, 2006
    Inventors: Jurgen Meyer, Steffen Hasenzahl, Heike Riedemann, Ann Gray
  • Surface-modified silicon dioxide-titanium dioxide mixed oxides
    Publication number: 20060144296
    Abstract: Pyrogenically prepared surface-modified silicon dioxide-titanium dioxide mixed oxides are prepared by spraying pyrogenically prepared silicon dioxide-titanium dioxide mixed oxides with a surface-modifying agent.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 6, 2006
    Applicant: Degussa AG
    Inventors: Jurgen Meyer, Kai Schumacher, Steffen Hasenzahl, Heike Riedemann, Ann Gray