7,101,808 Chromate free method for surface etching of stainless steel.
7,011,254 Chromate free method for surface etching of titanium.
7,001,533 Chromate free method for surface etching of aluminum and aluminum alloys.
6,706,207 Non-chromate metal surface etching solutions.
6,762,238 Water-borne polymeric complex and anti-corrosive composition.
6,150,023 Electroactive polymer coatings for corrosion control.