Patents by Inventor Sandro Fortunati

Sandro Fortunati 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).

  • Process for thermal treatment of steel strip
    Patent number: 6679957
    Abstract: In the thermal treatment of continuous-cast or hot-rolled steel strip, by using particular solutions regarding the choice of the strip rolling temperatures, the transfer times from the coiler to the furnace, as well as specific process steps in annealing, it is possible to treat any type of steel by sending the coils of strip, still at a high temperature, directly to the annealing furnace, at the same time maintaining the mechanical and microstructural characteristics obtainable in traditional cold-strip annealing.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: January 20, 2004
    Assignee: Acciai Speciali S.p.A.
    Inventors: Massimo Barteri, Sandro Fortunati, Gianni Songini
  • Process for electrolytic pickling using nitric acid-free solutions
    Patent number: 6565735
    Abstract: A process for electrolytic pickling of stainless steel of the ferritic, martensitic, austenitic and duplex series as well as superaustenitic and superferritic steels, nickel or Ni/Cr-based super alloys, and titanium and its alloys is provided. The process utilizes an electrolytic pickling solution containing H2SO4 in a concentration of from 20 to 140 g/l and Fe3+ ions in a concentration of from 15 to 80 g/l, the Fe2+ ions being present a quantity corresponding to a Fe3+/Fe2+ ratio of >1 and preferably >3.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: May 20, 2003
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Sandro Fortunati, Yoannis Demertzis, Stefano Trasatti, Paolo Giordani, Augusto Musso, Franco Mancia
  • Method for pickling steel products
    Patent number: 6500328
    Abstract: Method for pickling products made of steel, characterized in that within the pickling bath Fe3+ is present, directly added in a controlled concentration, or produced in the pickling bath itself by adding an oxidizing agent such as hydrogen peroxide, ozone, permanganates. persulphates and oxygen.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: December 31, 2002
    Assignee: Acciai Speciali Terni S.p.A.
    Inventors: Sandro Fortunati, Franco Mancia, Augusto Musso
  • Method for pickling products of a metal alloy in absence of nitric acid and for recovering exhausted pickling solutions and apparatus therefore
    Patent number: 6221234
    Abstract: A method for pickling products in a metal alloy containing iron, and products in titanium and alloys thereof, in the absence of nitric acid as an oxidizing agent, and for the recovery of the exhausted solutions, characterized in that the recovery of the exhausted solutions deriving from pickling comprises the following steps: sending of the pickling solution, both as catholyte and as anolyte, in an electro-chemical cell optionally of the membrane type to separate the Fe2+ (or Ti2+) ions to be disposed of, from the Fe3+ (or of the Ti3+ and Ti4+) ions to be recovered, obtained by reduction at the cathode of the Fe3+ ions which are in the catholyte to Fe2+ (or of the Ti3+ and Ti4+ ions to Ti2+) and of oxidation at the anode Fe2+ (or Ti2+) ions which are in the anolyte to Fe3+ (to Ti3+ and Ti4+); treating the catholytic solution coming out of the cell and enriched in Fe2+ (or Ti2+) ions as to allow the separation in two phases, a
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: April 24, 2001
    Assignee: Acciai Speciali Terni S.p.A.
    Inventors: Franco Mancia, Sandro Fortunati