Patents by Inventor Lutz Mädler

Lutz Mädler 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).

  • Gas sensor and method for producing the same
    Patent number: 9091669
    Abstract: A gas sensor is used for detecting gas in the air, especially formaldehyde. The sensor comprises at least one gas-sensitive zone which is preferably a layer on a substrate and which contains the ternary compound In4Sn3O12 as the gas-sensitive material. In order to produce the gas-sensitive zone, a flame spray pyrolysis (FSP) is carried out, organometallic compounds of indium and tin being used as the reactants. The gas sensor is especially suitable for online gas detection.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: July 28, 2015
    Assignees: Eberghard Karls Universitat Tubingen, Universitat Breman
    Inventors: Nicolae Barsan, Udo Weimar, Jens Kemmler, Lutz Maedler, Suman Pokhrel
  • GAS SENSOR AND METHOD FOR PRODUCING THE SAME
    Publication number: 20130111974
    Abstract: The invention relates to a gas sensor for detecting gas in the air, especially formaldehyde. The sensor comprises at least one gas-sensitive zone which is preferably a layer on a substrate and which contains the ternary compound In4Sn3O12 as the gas-sensitive material. In order to produce the gas-sensitive zone, a flame spray pyrolysis (FSP) is carried out, organometallic compounds of indium and tin being used as the reactants. The gas sensor is especially suitable for online gas detection.
    Type: Application
    Filed: July 7, 2011
    Publication date: May 9, 2013
    Applicants: UNIVERSITÄT BREMEN, EBERHARD KARLS UNIVERSITÄT TÜBINGEN
    Inventors: Nicolae Barsan, Udo Weimar, Jens Kemmler, Lutz Maedler, Suman Pokhrel
  • Direct formation of highly porous gas-sensing layers by in-situ deposition of flame-made nanoparticles
    Publication number: 20120094030
    Abstract: Method of producing a gas sensor includes positioning a sensor substrate in a flame spray pyrolysis apparatus, generating an aerosol phase with sensing material nanoparticles by flame spray pyrolysis of a precursor substance, depositing the sensing material particles contained in the aerosol, in particular nanoparticles of the sensing material, onto the sensor substrate directly from the aerosol phase to form a porous sensing layer on the sensor substrate.
    Type: Application
    Filed: December 22, 2011
    Publication date: April 19, 2012
    Inventors: Lutz Maedler, Sotiris Pratsinis, Albert Roessler, Udo Weimar, Nicolae Barsan, Aleksander Gurlo
  • FORMATION OF HIGHLY POROUS GAS-SENSING LAYERS BY DEPOSITION OF NANOPARTICLES PRODUCED BY FLAME SPRAY PYROLYSIS
    Publication number: 20090291024
    Abstract: The invention relates to a method of producing a gas sensor comprising the steps of a. Positioning a sensor substrate (7) in a flame spray pyrolysis apparatus (1); b. Generating an aerosol phase comprising sensing material nanoparticles by flame spray pyrolysis (FSP) of a precursor substance; c. Depositing the sensing material particles contained in the aerosol, in particular nanoparticles of the sensing material, onto the sensor substrate (7) directly from the aerosol phase to form a porous sensing layer (15).
    Type: Application
    Filed: November 25, 2005
    Publication date: November 26, 2009
    Inventors: Lutz Maedler, Sotiris Pratsinis, Albert Roessler, Udo Weimar, Nicolae Barsan, Aleksander Gurlo
  • Dental composites based on X-ray-opaque mixed oxides prepared by flame spraying
    Patent number: 7335250
    Abstract: The present invention relates to dental composites comprising at least one nanoparticulate mixed oxide (a) of SiO2 with X-ray-opaque metal oxides of one or more elements selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu which has been prepared by flame spraying.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: February 26, 2008
    Assignee: Ivoclar Vivadent AG
    Inventors: Peter Burtscher, Lutz Mädler, Norbert Moszner, Sotiris E. Pratsinis, Volker M. Rheinberger
  • Flame made metal oxides
    Patent number: 7211236
    Abstract: Described is a method for the production of metal oxides by flame spray pyrolysis, in particular mixed metal oxides such as ceria/zirconia, and metal oxides obtainable by said method. Due to high enthalpy solvents with a high carboxylic acid content said metal oxides have improved properties. For example ceria/zirconia has excellent oxygen storage capacity at high zirconium levels up to more than 80% of whole metal content.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: May 1, 2007
    Assignee: Eidgenossische Technische Hochschule Zurich
    Inventors: Wendelin J. Stark, Lutz Mädler, Sotiris E. Pratsinis