Patents by Inventor Stefano Sfolcini

Stefano Sfolcini 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).

  • Brightening and passivation of stainless steel surfaces
    Patent number: 10392710
    Abstract: This invention relates to a composition for the brightening and/or passivating of stainless steel after pickling. The invention is based on the discovery that the presence of organic compounds containing multiple hydroxyl groups with at least 3, but not more than 8 carbon atoms as a further ingredient of passivating and brightening solution significantly increases the desmutting performance of pickled stainless steel surfaces. The compositions of the invention are especially useful for the passivating and brightening of stainless steel grades being alloyed with sulfur. The invention thus further encompasses a passivating and brightening process for pickled stainless steel surfaces wherein the stainless steel is alloyed with at least 0.10 at.-% of sulfur.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 27, 2019
    Assignee: Henkel AG & Co. KGaA
    Inventors: Valentino Gasparetto, Mauro Rigamonti, Paolo Giordani, Stefano Sfolcini
  • BRIGHTENING AND PASSIVATION OF STAINLESS STEEL SURFACES
    Publication number: 20150267307
    Abstract: This invention relates to a composition for the brightening and/or passivating of stainless steel after pickling. The invention is based on the discovery that the presence of organic compounds containing multiple hydroxyl groups with at least 3, but not more than 8 carbon atoms as a further ingredient of passivating and brightening solution significantly increases the desmutting performance of pickled stainless steel surfaces. The compositions of the invention are especially useful for the passivating and brightening of stainless steel grades being alloyed with sulfur. The invention thus further encompasses a passivating and brightening process for pickled stainless steel surfaces wherein the stainless steel is alloyed with at least 0.10 at.-% of sulfur.
    Type: Application
    Filed: June 3, 2015
    Publication date: September 24, 2015
    Inventors: Valentino Gasparetto, Mauro Rigamonti, Paolo Giordani, Stefano Sfolcini