The Solid Is Primarily Inorganic Material (e.g., Mercurous Halide) Patents (Class 516/78)
- The material is a silica particle having a distinct layer containing non-monovalent metal oxide (e.g., alumina coated silica sol) (Class 516/80)
- The material is substantially pure silica sol (Class 516/81)
- The silica is formed or grown by reaction of alkali silicate and non-siliceous inorganic acid (e.g., H2SO4) (Class 516/82)
- Ion exchange step occurs before or during growing or forming the sol (Class 516/83)
- Ion-exchange step employed in post-treatment (e.g., purification) (Class 516/84)
- Gel forming step (e.g., peptize) (Class 516/85)
- Hydrolysis step or elemental silicon source (e.g., forming fumed silica) (Class 516/86)
- Having colloid system stabilizing or preserving agent which is organic compound (e.g., deflocculant, antibacterial, esterification of unstable silicasols) (Class 516/87)
- The metal present in the greatest amount is yttrium, scandium, or rare earth (e.g., hydrated ceric dioxide) (Class 516/89)
- The metal present in the greatest amount is titanium, zirconium, or hafnium (Class 516/90)
- The metal present in the greatest amount is antimony, bismuth, or arsenic (Class 516/91)
- The metal present in the greatest amount is tin, lead, or geranium (e.g., lead sulfate) (Class 516/92)
- The metal present in the greatest amount is aluminum (Class 516/93)
- The metal present in the greatest amount in the compounds is iron, nickel, or cobalt (Class 516/95)