Article History
Received: 19 March 2015
Accepted: 11 August 2015
First Online: 14 September 2015
Competing interests
: A patent application has been filed by P.N. Dannhauser and E.J. Ungewickell (EP2812029 A1) that includes aspects of the procedure used for the coating of surfaces. So far, the application has exclusively proved to be of scientific value, with no assignable monetary value.