Patents by Inventor Daniel-Gordon Duff

Daniel-Gordon Duff 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: 8354028
    Abstract: A method for separating electrolyte-containing water from an organic phase by means of permeation on a hydrophobic separating means. The permeated organic solution is substantially depleted in water and the retained water is enriched with electrolytes.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: January 15, 2013
    Assignee: Bayer Material Science AG
    Inventors: Helmut Meyer, Guido Naberfeld, Johann Rechner, Rafael Warsitz, Michael Traving, Werner Bäcker, Thomas Elsner, Arno Nennemann, Stephan Bahnmuler, Gerhard Langstein, Julia Hitzbleck, Patrick Theato, Daniel Kessler, Daniel-Gordon Duff, Sascha Plug
  • Patent number: 7285331
    Abstract: The invention relates to a structured surface with ultraphobic properties. Said surface as a surface topography in which the value of the integral of a function S: S(log f)=a(f)·f, which gives a relationship between the spatial frequencies f of the individual Fourier components and their amplitudes a(f) is at least 0.5 between the integration limits log (f1/?m?1)=?3 and log (f2/?m?1)=3. The surface consists of a hydrophobic or oleophobic material or is coated with a hydrophobic or oleophobic material.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 23, 2007
    Assignee: Qiagen GmbH
    Inventors: Karsten Reihs, Daniel-Gordon Duff, Georg Wiessmeier, Matthias Voetz, Johan Kijlstra, Dieter Rühle, Burkhard Köhler
  • Patent number: 6825366
    Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium, a process for the preparation of said compounds and a method of catalyzing a chemical reaction through conducting said chemical reaction in the presence of said compound.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 30, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: A. H. Derek Cunningham, Harry Zumaqué, Daniel-Gordon Duff, Stephan Völkening, Georg Wiessmeier
  • Publication number: 20040053029
    Abstract: The invention relates to an agent for protecting a material, especially a wood protection agent. The inventive agent is based on a polymer or resin, with a waterproofing agent and filler particles which are dispersed in said resin or said polymer. The invention also relates to bodies consisting of wood which have been treated with the wood protection agent and to a method for protecting materials that are sensitive to the weather, especially wood.
    Type: Application
    Filed: October 18, 2002
    Publication date: March 18, 2004
    Inventors: Karsten Reihs, Daniel-Gordon Duff, Burkhard Kohler, Dieter Ruhle
  • Patent number: 6652669
    Abstract: The invention relates to a method for producing an ultraphobic surface on aluminium as the supporting material and to the resulting surface and its use. According to said method, the surface of an aluminium support is anodized, especially by anodic oxidation, and/or electrochemically pickled in an acid solution with an alternating voltage, treated in hot water or water vapor at a temperature of 50 to 100° C., optionally coated with an adhesion promoter layer and then provided with a hydrophobic or especially oleophobic coating.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: November 25, 2003
    Assignee: Sunyx Surface Nanotechnologies GmbH
    Inventors: Karsten Reihs, Daniel-Gordon Duff, Georg Wiessmeier, Burkhard Koehler, Matthias Voetz, Juan Gonzalez-Blanco, Eckard Wenz
  • Patent number: 6565973
    Abstract: The present invention relates to a composite particle containing a solid inorganic or organic colorless support material and adherent to it an inorganic and/or organic pigment particle, wherein the pigment particle has an average particle size of 1 nm to 100 nm, comprises at least one primary pigment particle and the minimum average distance between two pigment particles is at least one quarter of the diameter of the primary pigment particle, whereby the modified inorganic and organic pigments, depending on the pigment material, can be used as IR light absorbers or as color-imparting agents and give rise to a negligible haze in the matrix.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: May 20, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Daniel-Gordon Duff, Werner Hoheisel, Kai Bütje
  • Publication number: 20030060643
    Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yurium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium, a process for the preparation of said compounds and a method of catalyzing a chemical reaction through conducting said chemical reaction in the presence of said compound.
    Type: Application
    Filed: August 6, 2002
    Publication date: March 27, 2003
    Inventors: A. H. Derek Cunningham, Harry Zumaque, Daniel-Gordon Duff, Stephan Vlkening, Georg Wiessmeier
  • Patent number: 6466355
    Abstract: This invention relates to electrochromic devices that are protected against UV light by nanoparticles.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 15, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Daniel-Gordon Duff, Werner Hoheisel
  • Publication number: 20020071948
    Abstract: The present invention relates to a composite particle containing a solid inorganic or organic colorless support material and adherent to it an inorganic and/or organic pigment particle, wherein the pigment particle has an average particle size of 1 nm to 100 nm, comprises at least one primary pigment particle and the minimum average distance between two pigment particles is at least one quarter of the diameter of the primary pigment particle, whereby the modified inorganic and organic pigments, depending on the pigment material, can be used as IR light absorbers or as color-imparting agents and give rise to a negligible haze in the matrix.
    Type: Application
    Filed: October 5, 2001
    Publication date: June 13, 2002
    Inventors: Daniel-Gordon Duff, Werner Hoheisel, Kai Butje