Patents by Inventor Udo Weimar

Udo Weimar 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).

  • Publication number: 20220187232
    Abstract: A gas sensor that selectively detects and/or measures acetylene and/or ethylene includes a substrate; at least one electrode pair; at least one gas-sensitive layer consisting of at least one metal oxide from the group ReFeO3 and in contact with the at least one electrode pair; a heating element; and at least one control device, wherein the heating element is adapted to be heated alternately to at least two different temperatures of 150° C.-250° C., 200° C.-300° C. and 250° C.350° C., respectively, by the control device.
    Type: Application
    Filed: April 15, 2020
    Publication date: June 16, 2022
    Inventors: Abdulaziz Alharbi, Nicolae Barsan, Udo Weimar
  • Publication number: 20200393431
    Abstract: A highly stable gas sensor capable of detecting carbon dioxide is provided. A carbon dioxide gas sensor includes an insulating substrate and a gas sensing layer formed on one major surface of the insulating substrate via electrodes, in which the gas sensing layer comprises one or more rare earth oxides represented by Ln2O3, Ln being at least one rare earth metal element selected from Sc, Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Pr, Yb and Lu, and a method for producing the gas sensor are provided.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 17, 2020
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Takuya SUZUKI, Nicolae BARSAN, Udo WEIMAR
  • 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
  • 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
  • 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
  • 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