Patents by Inventor Holger Paul

Holger Paul 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).

  • Crystal modifications of transmission dyes
    Patent number: 8557820
    Abstract: Disclosed is the use of an aqueous dispersion comprising (a) a micronized sparingly soluble organic benzophenone derivative of formula (1), selected from the crystal modifications (B) and (C), wherein the crystal modification (B) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.70; and wherein the crystal modification (C) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.06; and (b) a dispersing agent selected from anionic, non-ionic and amphoteric surfactants; for protecting the human skin from browning and skin aging. The new crystal modification (C) represents a thermodynamically stable compound of formula (1) at 25° C. This modification is therefore suitable in dispersions comprising micro-fine particles.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: October 15, 2013
    Assignee: BASF SE
    Inventors: Martin Vogt, Stefan Müller, Julie Grumelard, Cyrille Deshayes, Holger Paul, Jürg Haase, Thomas Ehlis
  • CRYSTAL MODIFICATIONS OF TRANSMISSION DYES
    Publication number: 20100144753
    Abstract: Disclosed is the use of an aqueous dispersion comprising (a) a micronized sparingly soluble organic benzophenone derivative of formula (1), selected from the crystal modifications (B) and (C), wherein the crystal modification (B) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.70; and wherein the crystal modification (C) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.06; and (b) a dispersing agent selected from anionic, non-ionic and amphoteric surfactants; for protecting the human skin from browning and skin aging. The new crystal modification (C) represents a thermodynamically stable compound of formula (1) at 25° C. This modification is therefore suitable in dispersions comprising micro-fine particles.
    Type: Application
    Filed: April 28, 2008
    Publication date: June 10, 2010
    Applicant: CIBA CORPORATION
    Inventors: Martin Vogt, Stefan Müller, Julie Grumelard, Cyrille Deshayes, Holger Paul, Jürg Haase, Thomas Ehlis