It is reported that Shepherd Color has been assigned a patent developed by Simon K Boocock, Liberty Township, for a non chromate corrosion inhibitor formulas based on permanganate sodalities compositions.

The abstract of the patent published by the US Patent and Trademark Office states that "Sodalite is synthesized in the presence of a stoichiometric quantity of Permanganate ion. After thorough washing to remove trace salts the resulting pigment may be encapsulated with amorphous silica using the Iler process. The resulting pigment has enhanced acid stability and provides excellent corrosion protection on reactive metal substrates such as aerospace aluminum or coil grade hot dip galvanized steel."

(Sourced from www.targetednews.com)