Trade Service Corporation has been granted a patent for an inorganic waterborne coating agent to be applied onto the surface of an organic or inorganic base material, wherein the inorganic waterborne coating agent consists of alkaline colloidal silica including water, a sodium phosphate compound, a potassium phosphate compound, or a mixture of thereof and boric acid.
Source:
http://www.coatingsworld.com/issues/0713/view_patents/trade-service-patents-inorganic-waterborne-coating/