Patents by Inventor Andreas Stepan

Andreas Stepan 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: 20090032409
    Abstract: The invention relates to a method for cleaning, sterilising and disinfecting dishes and other kitchen utensils by means of a wash liquid (5). In order to permit an economically and technically advantageous cleaning, an electrical current is directly applied to an electrode (15, 16), arranged in the wash liquid (5) and embodied as a diamond and/or lead-tin electrode, to generate OH radicals (14) in said wash liquid (5), which permit cleaning, sterilising and disinfecting of dishes and other kitchen utensils. The invention also relates to a device for carrying out said method, wherein an electrolytic cell (20) with a pair of electrodes (15, 16), comprising a diamond electrode for generating OH radicals (14), is directly integrated into a wash water circuit of a dishwasher (1).
    Type: Application
    Filed: May 3, 2006
    Publication date: February 5, 2009
    Inventors: Juan Horn, Andreas Stepan
  • Publication number: 20070289878
    Abstract: A method and a device (13) are disclosed for the electrolytic pickling of flat metal products (2), in particular special steel and/or carbon steel strips. At least one diamond electrode and/or at least one lead/tin electrode, for example a lead 93/tin7 electrode (15) is used. The special characteristic of the diamond electrodes and/or lead/tin electrodes is the form of water replacement. Whereas in electrolysis water is usually split into hydrogen and oxygen, the diamond electrode and/or lead tin electrode provides a working range in which ozone or highly reactive hydroxyl radicals are formed instead of oxygen. As a result the pickling times are significantly reduced in comparison to the conventional chemical descaling, and also in comparison to the conventional electrolytic pickling.
    Type: Application
    Filed: July 11, 2005
    Publication date: December 20, 2007
    Applicant: SIEMENS VAI METALS TECHNOLOGIES GMBH & CO.
    Inventors: Andreas Stepan, Juanito Horn