Patents by Inventor Uwe Dreibigacker

Uwe Dreibigacker 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).

  • Method for removing ferrous ions from acidic tinning electrolytes and tinning electrolyte recovery plant for iron using the same
    Patent number: 5891343
    Abstract: The invention relates to a method for separating ferrous ions from an iron-containing tinning electrolyte on the basis of methanesulfonic acid or phenolsulfonic acid, comprising the following steps:(a) providing a concentrated tin and iron-containing electrolyte containing 0.75 mols/l or more methanesulfonic acid phenolsulfonic acid(b) agitating and cooling the concentrated electrolyte to temperatures at which an insoluble Fe-salt preciptates(c) separating the insoluble precipitate to recover an electrolyte with a reduced iron concentration.and a recovery plant for tinning electrolytes on the basis of methanesulfonic acid or phenolsulfonic acid wherein this method is employed.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: April 6, 1999
    Assignee: LeaRonal GmbH
    Inventors: Dieter Hahn, Uwe Dreibigacker