Patents by Inventor Anika Exner

Anika Exner 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).

  • AQUEOUS COMPOSITION FOR ETCHING OF COPPER AND COPPER ALLOYS
    Publication number: 20140262805
    Abstract: The present invention relates to an aqueous composition and a process for etching of copper and copper alloys. The aqueous composition comprises Fe3+ ions, an acid and a N-alkoxylated polyamide. The aqueous composition is particularly useful for making of fine structures in the manufacture of printed circuit boards, IC substrates and the like.
    Type: Application
    Filed: November 8, 2012
    Publication date: September 18, 2014
    Inventors: Norbert Lützow, Martin Thoms, Anika Exner, Mirko Kloppisch