U.S. federal trademark · Serial No. 79216061 · Reg. No. 5440727
Nanoparticles of silicon dioxide; colloidal silica; nanoparticles, nanoparticles of silicon dioxide or colloidal silica in aqueous solutions; nanoparticles of silicon or colloidal silica in aqueous solutions with an addition of less than 5 percent of a non-aqueous liquid, in particular glycol, chlorine and/or biocide
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