Patents by Inventor Markus Senner

Markus Senner 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).

  • Phosphating method accelerated by N-oxides
    Patent number: 6379474
    Abstract: An acidic aqueous phosphating solution is presented having 0.2 to 3 g/l of zinc ions, 3 to 50 g/l of phosphate ions expressed as PO4−3, and 0.05 to 4 g/l of an organic N-oxide containing a saturated, unsaturated or aromatic 5- or 6-membered ring system, where the N atom of the N-oxide is part of said ring system, and where the ratio by weight of phosphate ions to zinc ions is from 3.7 to 30:1. The solution is free of hydroxylamine and useful in phosphating metal surfaces.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 30, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Mayer, Peter Kuhm, Pietro Balboni, Markus Senner, Horst-Dieter Speckmann, Juergen Geke, Jan-Willem Brouwer, Annette Willer